Electronic device and control method therefor

Abstract

This electronic device comprises a projection unit, a memory, and at least one processor for controlling the projection unit, which outputs a projection image in an ultra-short throw mode or a regular mode, wherein, when receiving a projection command, the at least one processor controls the projection unit so as to: identify the position of a projection surface on the basis of the minimum screen size of the projection image output onto the projection surface; acquire the projection position on the basis of the position of the projection surface, the minimum screen size and the projection ratio; and output the projection image onto the projection surface according to any one of an ultra-short throw mode and a regular mode on the basis of the projection position.

Description

Electronic device and method of controlling the same

[0001] The present disclosure relates to an electronic device and a control method thereof, and more particularly, to an electronic device that outputs a projection image in an ultra-short focus manner or a general manner and a control method thereof.

[0002] Both ultra-short-focus and standard modes can be implemented through a single device. Upon user command, the device can move closer to the projection surface and output a projected image using ultra-short-focus mode. Upon user command, the device can move further away from the projection surface and output a projected image using standard mode.

[0003] Depending on the projection environment, either an ultra-short-focus method or a standard method may be appropriate. If users decide on a projection method based on the projection environment each time, they face the inconvenience of having to manually input control commands.

[0004] The projection environment can include spatial complexity and the presence of obstacles. Automatically selecting between a short-focus or standard focus mode can make it difficult to determine which method is more appropriate for the user.

[0005] The present disclosure is designed to improve the above-described problem, and an object of the present disclosure is to provide an electronic device and a control method thereof that determine a target method of either the ultra-short focus method or the general method by identifying the projection positions of each of the ultra-short focus method and the general method.

[0006] According to one embodiment, an electronic device includes a projection unit, a memory, and at least one processor for controlling the projection unit to output a projection image in an ultra-short focus manner or a general manner, wherein the at least one processor, when a projection command is received, identifies a position of a projection surface based on a minimum screen size of the projection image to be output on the projection surface, obtains the projection position based on the position of the projection surface, the minimum screen size, and a projection ratio, and controls the projection unit to output the projection image on the projection surface in one of the ultra-short focus manner or the general manner based on the projection position.

[0007] The above ultra-short focus method is a method of outputting a projection image with a first projection ratio, and the above general method is a method of outputting the projection image with a second projection ratio smaller than the first projection ratio, and the at least one processor obtains a first projection position corresponding to the ultra-short focus method based on the position of the projection surface, the minimum screen size, and the first projection ratio, obtains a second projection position corresponding to the general method based on the position of the projection surface, the minimum screen size, and the second projection ratio, and controls the projection unit to output the projection image to the projection surface according to either the ultra-short focus method or the general method based on the first projection position and the second projection position.

[0008] The at least one processor may determine the one method by comparing a first predicted time, which is the sum of a first movement time and a transition time from a current location of the electronic device to the first projection location, with a second predicted time, which is the sum of a second movement time and a transition time from a current location of the electronic device to the second projection location.

[0009] The above transition time may include one of a time for transitioning from a first state in which the projection unit is controlled in the ultra-short focus manner to a second state in which the projection unit is controlled in the general manner, or a time for transitioning from the second state to the first state.

[0010] The at least one processor can control the projection unit to move to the first projection position and output the projection image to the projection surface based on the ultra-short focus method if the first prediction time is less than or equal to the second prediction time.

[0011] The at least one processor may obtain a first screen size of the projection image to be output to the projection surface in the ultra-short focus manner based on the first projection position, the position of the projection surface, and the first projection ratio, and obtain a second screen size of the projection image to be output to the projection surface in the normal manner based on the second projection position, the position of the projection surface, and the second projection ratio, and determine the one method by comparing the first screen size and the second screen size.

[0012] The at least one processor may change the second projection position further from the projection surface if the size difference between the first screen size and the second screen size is greater than or equal to a threshold size value.

[0013] The at least one processor may obtain a first brightness value of the projection image to be output on the projection surface in the ultra-short focus manner at the first projection position, obtain a second brightness value of the projection image to be output on the projection surface in the normal manner at the second projection position, and compare the first brightness value and the second brightness value to determine the one method.

[0014] The at least one processor may change the second projection position closer to the projection surface if the brightness difference between the first brightness value and the second brightness value is greater than or equal to a threshold brightness value.

[0015] The at least one processor can obtain the first projection position between a first minimum position of the ultra-short focus method based on the position of the projection surface, the minimum screen size, and the first projection ratio, and a first maximum position of the ultra-short focus method based on the position of the projection surface, the size of the projection surface, and the first projection ratio.

[0016] According to one embodiment, a control method of an electronic device including a projection unit that outputs a projection image in an ultra-short focus manner or a general manner includes the steps of: identifying a position of a projection surface based on a minimum screen size of the projection image output on the projection surface when a projection command is received; acquiring the projection position based on the position of the projection surface, the minimum screen size, and the projection ratio; and outputting the projection image on the projection surface based on the projection position in either the ultra-short focus manner or the general manner.

[0017] The above ultra-short focus method is a method of outputting a projection image with a first projection ratio, and the above general method is a method of outputting the projection image with a second projection ratio smaller than the first projection ratio, and the step of obtaining the projection position obtains a first projection position corresponding to the ultra-short focus method based on the position of the projection surface, the minimum screen size, and the first projection ratio, and obtains a second projection position corresponding to the general method based on the position of the projection surface, the minimum screen size, and the second projection ratio, and the step of outputting the projection image may output the projection image to the projection surface according to either the ultra-short focus method or the general method based on the first projection position and the second projection position.

[0018] The control method may further include a step of determining the one method by comparing a first predicted time, which is the sum of a first movement time and a transition time from a current location of the electronic device to the first projection position, with a second predicted time, which is the sum of a second movement time and a transition time from a current location of the electronic device to the second projection position.

[0019] The above transition time may include one of the time for transitioning from a first state in which the projection unit is controlled in the ultra-short focus manner to a second state in which the projection unit is controlled in the normal manner, or the time for transitioning from the second state to the first state. The state may be described as a mode or a method.

[0020] The control method may further include a step of moving to the first projection position and outputting the projection image to the projection surface based on the ultra-short focus method if the first prediction time is less than or equal to the second prediction time.

[0021] The step of determining the one method may include obtaining a first screen size of the projection image to be output to the projection surface in the ultra-short focus manner based on the first projection position, the position of the projection surface, and the first projection ratio, obtaining a second screen size of the projection image to be output to the projection surface in the normal manner based on the second projection position, the position of the projection surface, and the second projection ratio, and comparing the first screen size and the second screen size to determine the one method.

[0022] The above control method may further include a step of changing the second projection position further from the projection surface if the size difference value between the first screen size and the second screen size is greater than or equal to a threshold size value.

[0023] The step of determining the one method may include obtaining a first brightness value of the projection image to be output on the projection surface in the ultra-short focus manner at the first projection position, obtaining a second brightness value of the projection image to be output on the projection surface in the normal manner at the second projection position, and comparing the first brightness value and the second brightness value to determine the one method.

[0024] The above control method may further include a step of changing the second projection position closer to the projection surface if the brightness difference value between the first brightness value and the second brightness value is greater than or equal to a threshold brightness value.

[0025] The step of obtaining the first projection position may obtain the first projection position between the first minimum position of the ultra-short focus method based on the position of the projection surface, the minimum screen size, and the first projection ratio, and the first maximum position of the ultra-short focus method based on the position of the projection surface, the size of the projection surface, and the first projection ratio.

[0026] FIG. 1 is a block diagram illustrating an electronic device according to one embodiment.

[0027] FIG. 2 is a block diagram illustrating a specific configuration of the electronic device of FIG. 1, according to one embodiment.

[0028] FIG. 3 is a drawing for explaining a first projection position and a second projection position according to one embodiment.

[0029] FIG. 4 is a diagram illustrating an operation of obtaining various positions used to determine a projection position, according to one embodiment.

[0030] FIG. 5 is a drawing for explaining an operation of determining a short-focus method or a general method according to one embodiment.

[0031] FIG. 6 is a drawing for explaining an operation for determining a projection method according to one embodiment.

[0032] FIG. 7 is a diagram for explaining a calculation method according to a section in which an electronic device is located, according to one embodiment.

[0033] Figure 8 is a drawing for explaining a preset section according to one embodiment.

[0034] FIG. 9 is a drawing for explaining a situation in which an electronic device is located in a first section (r1), according to one embodiment.

[0035] FIG. 10 is a diagram for explaining an operation of obtaining a prediction time when an electronic device is located in a first section (r1), according to one embodiment.

[0036] FIG. 11 is a diagram for explaining an operation of comparing a predicted time and an operation of comparing a brightness value when an electronic device is located in a first section (r1), according to one embodiment.

[0037] FIG. 12 is a drawing for explaining a situation in which an electronic device is located in a second section (r2), according to one embodiment.

[0038] FIG. 13 is a diagram for explaining an operation of obtaining a prediction time when an electronic device is located in a second section (r2), according to one embodiment.

[0039] FIG. 14 is a drawing for explaining an operation of changing a second projection position when an electronic device is located in a second section (r2), according to one embodiment.

[0040] FIG. 15 is a drawing for explaining an operation of comparing screen sizes when an electronic device is located in a second section (r2), according to one embodiment.

[0041] FIG. 16 is a drawing for explaining an operation of comparing brightness values ​​when an electronic device is located in a second section (r2), according to one embodiment.

[0042] FIG. 17 is a drawing for explaining a situation in which an electronic device is located in a third section (r3), according to one embodiment.

[0043] FIG. 18 is a diagram for explaining an operation of obtaining a prediction time when an electronic device is located in a third section (r3), according to one embodiment.

[0044] FIG. 19 is a drawing for explaining a situation in which an electronic device is located in the fourth section (r4), according to one embodiment.

[0045] FIG. 20 is a diagram for explaining an operation of obtaining a prediction time when an electronic device is located in a fourth section (r4), according to one embodiment.

[0046] FIG. 21 is a drawing for explaining an operation of changing a second projection position when an electronic device is located in a fourth section (r4), according to one embodiment.

[0047] FIG. 22 is a drawing for explaining an operation of comparing brightness values ​​when an electronic device is located in a fourth section (r4), according to one embodiment.

[0048] FIG. 23 is a drawing for explaining a situation in which an electronic device is located in the fifth section (r5), according to one embodiment.

[0049] FIG. 24 is a diagram for explaining an operation of obtaining a prediction time when an electronic device is located in a fifth section (r5), according to one embodiment.

[0050] FIG. 25 is a drawing for explaining an operation of changing a second projection position when an electronic device is located in a fifth section (r5), according to one embodiment.

[0051] FIG. 26 is a drawing for explaining an operation of comparing brightness values ​​when an electronic device is located in a fifth section (r5), according to one embodiment.

[0052] FIG. 27 is a drawing for explaining a plurality of modules included in an electronic device according to one embodiment.

[0053] FIG. 28 is a drawing for explaining an operation of changing a second projection position according to one embodiment.

[0054] FIG. 29 is a drawing for explaining an operation of identifying an obstacle object according to one embodiment.

[0055] FIG. 30 is a drawing for explaining an operation of changing a moving position according to one embodiment.

[0056] FIG. 31 is a drawing for explaining an operation of determining a projection position by considering a user's activity radius according to one embodiment.

[0057] FIG. 32 is a drawing for explaining an operation of determining a movement position by considering a projection environment according to one embodiment.

[0058] FIG. 33 is a drawing for explaining a mobile projector according to one embodiment.

[0059] FIG. 34 is a drawing for explaining the distance between a projection surface and an electronic device according to one embodiment.

[0060] FIG. 35 is a drawing for explaining a moving operation of an electronic device according to one embodiment.

[0061] FIG. 36 is a diagram for explaining a notification for a location movement according to one embodiment.

[0062] FIG. 37 is a drawing for explaining a keystone correction function according to one embodiment.

[0063] FIG. 38 is a drawing for explaining a keystone correction function according to one embodiment.

[0064] FIG. 39 is a drawing for explaining an operation of changing a projection area according to one embodiment.

[0065] FIG. 40 is a drawing for explaining an operation of outputting a projection image using a plurality of devices according to one embodiment.

[0066] Figure 41 is a drawing for explaining an operation of changing a projection image according to distance.

[0067] FIG. 42 is a drawing for explaining a method of controlling an electronic device according to one embodiment.

[0068] Hereinafter, the present disclosure will be described in detail with reference to the attached drawings.

[0069] The terms used in the embodiments of this disclosure have been selected from widely used, current terms, taking into account the functions of this disclosure. However, these terms may vary depending on the intentions of those skilled in the art, precedents, the emergence of new technologies, etc. Furthermore, in certain cases, terms may be arbitrarily selected by the applicant, and in such cases, their meanings will be described in detail in the description of the relevant disclosure. Therefore, the terms used in this disclosure should not be defined simply as names of terms, but rather based on the meanings of the terms and the overall content of this disclosure.

[0070] In this specification, expressions such as “has,” “can have,” “includes,” or “may include” indicate the presence of a feature (e.g., a number, function, operation, or component such as a part), and do not exclude the presence of additional features.

[0071] The expression "at least one of A and / or B" should be understood to mean either "A" or "B" or "A and B".

[0072] As used herein, the expressions “first,” “second,” “first,” or “second,” etc., may describe various components, regardless of order and / or importance, and are only used to distinguish one component from another, but do not limit the components.

[0073] When it is said that a component (e.g., a first component) is “(operatively or communicatively) coupled with / to” or “connected to” another component (e.g., a second component), it should be understood that the component may be directly coupled to the other component, or may be connected through another component (e.g., a third component).

[0074] Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "comprise" or "consist of" are intended to indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but should be understood not to preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0075] In the present disclosure, a "module" or "part" performs at least one function or operation and may be implemented as hardware or software, or as a combination of hardware and software. Furthermore, multiple "modules" or multiple "parts" may be integrated into at least one module and implemented as at least one processor (not shown), excluding any "modules" or "parts" that need to be implemented as specific hardware.

[0076] In this specification, the term user may refer to a person using an electronic device or a device using an electronic device (e.g., an artificial intelligence electronic device).

[0077] An embodiment of the present disclosure will be described in more detail with reference to the attached drawings below.

[0078] FIG. 1 is a block diagram illustrating an electronic device (100) according to one embodiment.

[0079] Referring to FIG. 1, the electronic device (100) may include at least one processor (111), at least one projection unit (112), and at least one memory (113).

[0080] At least one processor (111) can perform overall control operations of the electronic device (100). Specifically, at least one processor (111) functions to control the overall operations of the electronic device (100). A specific description related to at least one processor (111) is described in FIG. 2.

[0081] The projection unit (112) is a configuration that projects images (projected images, contents, etc.) to the outside. A detailed description related to the projection unit (112) is described in Fig. 2.

[0082] The memory (113) can store a projection image projected through the projection unit (112). The projection image can refer to a still image as well as a continuous image (or a moving image). The projection image can refer to an image included in the content. The memory (113) can store the operating O / S.

[0083] At least one processor (111) can control operations performed in the electronic device (100).

[0084] At least one processor (111) can control a projection unit (112), a memory (113), and a projection unit (112) that outputs a projection image in a short-focus manner or a general manner.

[0085] At least one processor (111) can identify the position of the projection surface based on the minimum screen size of the projection image to be output on the projection surface when a projection command is received, obtain the projection position based on the position of the projection surface, the minimum screen size, and the projection ratio, and control the projection unit (112) to output the projection image on the projection surface according to either an ultra-short focus method or a general method based on the projection position.

[0086] The ultra-short focus method may be a method of outputting a projection image at a first projection ratio. The first projection ratio may represent a projection ratio corresponding to the ultra-short focus method. The electronic device (100) may include a projection unit (112) that includes an ultra-short focus lens. At least one processor (111) may output a projection image using the ultra-short focus lens. The first projection ratio may represent a projection ratio corresponding to the ultra-short focus lens.

[0087] The general method may be a method of outputting the projection image with a second projection ratio that is smaller than the first projection ratio. The second projection ratio may represent a projection ratio corresponding to the general method. The electronic device (100) may include a projection unit (112) that includes a general lens. At least one processor (111) may output the projection image using the general lens. The second projection ratio may represent a projection ratio corresponding to the general lens.

[0088] A smaller projection ratio may mean that the output size of the projection image projected at the same projection distance (the distance from the position of the projection surface (10) to the projection position) is smaller. The second projection ratio corresponding to the normal method may be smaller than the first projection ratio corresponding to the ultra-short focus method. When using the normal projection method to output a projection image of the same size, the projection image may need to be output at a longer distance than the ultra-short focus method.

[0089] At least one processor (111) can control the projection unit (112) in an ultra-short focus manner that outputs a projection image at a first projection ratio or in a general manner that outputs a projection image at a second projection ratio that is smaller than the first projection ratio.

[0090] The ultra-short focus method may be a projection method that outputs a projected image from a relatively short distance. The ultra-short focus method may include a method that outputs a projected image using a dedicated lens corresponding to the ultra-short focus method. The general method may include a method that outputs a projected image using a general lens other than the ultra-short focus method. The ultra-short focus method may be described as a first method, a first state, a first mode, etc. The general method may be described as a second method, a second state, a second mode, etc.

[0091] At least one processor (111) can control the projection unit (112) to obtain a minimum screen size of a projection image to be output on a projection surface (10) based on the projection command, determine a position of the projection surface (10) based on the minimum screen size, obtain a first projection position corresponding to an ultra-short focus method based on the position of the projection surface (10), the minimum screen size, and the first projection ratio, obtain a second projection position corresponding to a general method based on the position of the projection surface (10), the minimum screen size, and the second projection ratio, determine one of the ultra-short focus method or the general method as a target method based on the first projection position and the second projection position, and output the projection image on the projection surface (10) according to the target method.

[0092] At least one processor (111) can obtain (or receive) a projection command. At least one processor (111) can obtain user input including the projection command.

[0093] For example, user input can be obtained through the manipulation interface (115). At least one processor (111) can obtain user input including a projection command through a physical button included in the manipulation interface (115).

[0094] For example, user input can be obtained through a microphone (118). At least one processor (111) can obtain user input including audio data corresponding to a projection command through the microphone (118).

[0095] For example, user input can be obtained through a communication interface (114). At least one processor (111) can obtain user input received from an external device (e.g., a remote control device).

[0096] At least one processor (111) can obtain the minimum screen size of a projection image output to the projection surface (10) based on a projection command.

[0097] The minimum screen size may indicate the size of the area where the projection image is output to the projection surface (10). The minimum screen size may indicate the minimum screen size required for the projection image to be output in the space where the electronic device (100) is placed.

[0098] The closer the projection image is projected, the smaller the projection image output on the projection surface (10) may be. At least one processor (111) may determine a specific area in the space where the electronic device (100) is placed as a projection area where the projection image will be output. At least one processor (111) may require a minimum size of the projection area when determining the projection area where the projection image will be output. This is because if the minimum screen size is not set, all surfaces may be determined as projection areas.

[0099] For example, if the minimum screen size is not determined, at least one processor (111) can output a projection image to all surfaces of the space where the electronic device (100) is placed. This is because, no matter how small a specific area without obstacles is, if a projection image is output from a location close to the specific area, the entire projection image is output to the specific area. If the projection image is output from a location that is too close and the size of the projection image output to the actual projection surface (10) is small, it may be difficult for the user to recognize it.

[0100] At least one processor (111) can determine (or identify) a projection position so that a user can view a projection image at a minimum size using a minimum screen size.

[0101] The opposite concept may exist for a maximum screen size. This is because if the size of the projected image output is too large, the user cannot view the projected image. At least one processor (111) can determine the projection position so that the projected image is output on the projection surface (10) at a size larger than the minimum screen size and smaller than the maximum screen size.

[0102] In various embodiments, the maximum screen size may not be used in the process of determining the projection position based on the minimum screen size.

[0103] Minimum screen size may be described as minimum size, preset size, threshold size, projection area size, size corresponding to projection area, minimum projection size, minimum size of projection area, etc.

[0104] At least one processor (111) can determine a minimum screen size corresponding to a projection command. At least one processor (111) can determine the minimum screen size based on category information of the projection command.

[0105] For example, if the projection command is a command to output drama content, the preset first size can be determined as the minimum screen size.

[0106] For example, if the projection command is a command to output a notification, the preset second size can be determined as the minimum screen size. The preset sizes corresponding to each category information of the projection command can be stored in advance in the memory (113).

[0107] At least one processor (111) can determine a projection surface (10) capable of outputting a projection image with a minimum screen size. At least one processor (111) can determine at least one candidate projection surface in a space where the electronic device (100) is located. At least one processor (111) can determine a final projection surface among the at least one candidate projection surface.

[0108] At least one processor (111) may determine a projection surface that satisfies the minimum screen size among a plurality of candidate projection surfaces as the final projection surface. If there are multiple projection surfaces that satisfy the minimum screen size, at least one processor (111) may determine one projection surface as the final projection surface by using at least one of the user's position, the user's line of sight, and the size of the projection surface.

[0109] The screen size of the projected image output on the projection surface can be calculated by multiplying the throw ratio and the projection distance. The throw distance can represent the distance between the projection position and the projection surface position.

[0110] At least one processor (111) can identify a projection surface (10) capable of outputting a projection image with a minimum screen size among a plurality of candidate projection surfaces as a final projection surface. At least one processor (111) can output a projection image to the identified projection surface (10). The size of the projection surface (10) may be larger than the minimum screen size.

[0111] At least one processor (111) can obtain the location of the identified projection surface (10). The location of the projection surface (10) may be location (P2) of FIG. 3. The projection surface (10) may represent a projection area or a surface including a projection area. The projection surface (10) may be described as a projection area.

[0112] At least one processor (111) can determine a projection position based on the position of the projection surface (10) and the minimum screen size. The position of the projection surface (10) can indicate the position of the area where the projection image is to be output. The projection position can indicate the position of the electronic device (100) that outputs the projection image.

[0113] At least one processor (111) can first identify the position of the projection surface (10) and then determine the projection position. This is because if the projection position is identified first, a projection area that satisfies the minimum screen size may not exist.

[0114] For example, assume that a projection position has been determined. A suitable projection area for providing a projected image to the user may not exist at the determined projection position. There may be many obstacles around the determined projection position, or the size of the flat surface may be too small. At least one processor (111) may first determine the position of the projection surface (10) before determining the projection position.

[0115] At least one processor (111) can identify a projection position where a projection image can be output to a minimum screen size or larger based on the position of the projection surface (10).

[0116] According to various embodiments, at least one processor (111) may first identify a projection position and determine a projection surface (10) that satisfies a minimum screen size based on the identified projection position. At least one processor (111) may determine whether a projection surface that satisfies the minimum screen size exists based on the identified projection position. If a projection surface that satisfies the minimum screen size does not exist based on the identified projection position, at least one processor (111) may re-identify the projection position.

[0117] Depending on various embodiments, the positions of the projection surfaces (10) may be plural. The positions of the plurality of projection surfaces (10) may be described as a projection surface range.

[0118] Depending on the various embodiments, there may be multiple projection locations. The multiple projection locations may be described as projection ranges.

[0119] At least one processor (111) can determine a projection position based on the position of the projection surface (10), the minimum screen size, and a preset projection ratio. The preset projection ratio may vary depending on the projection lens. At least one processor (111) can obtain a projection ratio stored in the memory (113). The preset projection ratio may include at least one of a first projection ratio of an ultra-short focus method or a second projection ratio of a general method.

[0120] The operation of identifying the projection position using the position of the projection surface (10) and the minimum screen size can be applied to the operation of determining the projection position based on the position of the projection surface (10), the minimum screen size, and the preset projection ratio. Duplicate explanation is omitted.

[0121] At least one processor (111) can obtain (or calculate) a first projection position for outputting a projection image in an ultra-short focus manner based on the position of the projection surface (10), the minimum screen size, and the first projection ratio.

[0122] At least one processor (111) can obtain (or calculate) a second projection position for outputting a projection image in a general manner based on the position of the projection surface (10), the minimum screen size, and the second projection ratio.

[0123] At least one processor (111) can determine a target mode using a first projection position associated with the ultra-short focus mode and a second projection position associated with the normal mode. The target mode may indicate a final mode for outputting a projection image through the projection unit (112). The target mode may be changed depending on the calculation process.

[0124] The projection unit (112) can be controlled in an ultra-short focus manner or a general manner. At least one processor (111) can determine one of the ultra-short focus manner or the general manner as the target manner.

[0125] Once the target method is determined, at least one processor (111) can output a projection image to the projection surface (10) in the determined target method.

[0126] If the ultra-short focus method is determined as the target method and the current projection unit (112) is controlled in the ultra-short focus method, at least one processor (111) does not need to change the control mode (or control state).

[0127] If the ultra-short focus method is determined as the target method and the current projection unit (112) is controlled in the normal method, there is a need for at least one processor (111) to switch the control mode from the normal method to the ultra-short focus method.

[0128] If the general mode is determined as the target mode and the current projection unit (112) is controlled in the general mode, at least one processor (111) does not need to change the control mode.

[0129] If the general mode is determined as the target mode and the current projection unit (112) is controlled in the ultra-short focus mode, there is a need for at least one processor (111) to switch the control mode from the ultra-short focus mode to the general mode.

[0130] At least one processor (111) may obtain a first prediction time by adding up a first movement time and a transition time from a current position of the electronic device (100) to a first projection position, obtain a second prediction time by adding up a second movement time and a transition time from a current position of the electronic device (100) to a second projection position, and determine a target method by comparing the first prediction time and the second prediction time.

[0131] At least one processor (111) can identify (or sense) the current location of the electronic device (100). At least one processor (111) can obtain a first movement time for moving from the current location of the electronic device (100) to the first projection location. At least one processor (111) can obtain a first prediction time by adding the first movement time and the projection method switching time.

[0132] At least one processor (111) can obtain a second movement time for moving from the current location of the electronic device (100) to the second projection location. At least one processor (111) can obtain a second prediction time by adding the second movement time and the projection method switching time.

[0133] At least one processor (111) can determine a target method using the first prediction time and the second prediction time. At least one processor (111) can determine the target method by comparing the prediction times.

[0134] The operations for determining the first projection position, the second projection position, the first prediction time, and the second prediction time are described in FIGS. 10, 13, 18, 20, and 24.

[0135] The operation of comparing the predicted times is described in FIGS. 11, 15, and 26.

[0136] The transition time may include either the time for switching from a first state in which the projection unit (112) is controlled in an ultra-short focus manner to a second state in which the projection unit (112) is controlled in a normal manner, or the time for switching from the second state to the first state.

[0137] At least one processor (111) can control the projection unit (112) to move to the first projection position and output the projection image to the projection surface (10) based on the ultra-short focus method if the first prediction time is less than or equal to the second prediction time. If the first prediction time is less than or equal to the second prediction time, at least one processor (111) can determine the target method as the ultra-short focus method. Descriptions related to this are described in steps S1161 and S1162 of FIG. 11, steps S1561 and S1562 of FIG. 15, and steps S2661 and S2662 of FIG. 26.

[0138] At least one processor (111) can obtain a first screen size of a projection image to be output to the projection surface (10) in an ultra-short focus manner based on a first projection position, a position of the projection surface (10), and a first projection ratio, obtain a second screen size of a projection image to be output to the projection surface (10) in a general manner based on a second projection position, a position of the projection surface (10), and a second projection ratio, and determine a target manner by comparing the first screen size and the second screen size.

[0139] At least one processor (111) can obtain the distance between the first projection position and the position of the projection surface (10) as the first projection distance. At least one processor (111) can obtain (or calculate) the first screen size by multiplying the projection distance and the first projection ratio.

[0140] At least one processor (111) can obtain the distance between the second projection position and the position of the projection surface (10) as the second projection distance. At least one processor (111) can obtain (or calculate) the second screen size by multiplying the projection distance and the second projection ratio.

[0141] At least one processor (111) can determine a target method by comparing screen sizes. The operation of comparing screen sizes is described in FIG. 15.

[0142] At least one processor (111) obtains a size difference value between the first screen size and the second screen size, and if the size difference value is greater than or equal to a threshold size value, the second projection position can be changed to be further away from the projection surface (10). The operation of changing the second projection position to a position further away from the projection surface (10) may correspond to step S1535 of FIG. 15.

[0143] At least one processor (111) can obtain a first brightness value of a projection image to be output on a projection surface (10) in a short-focus manner at a first projection position, obtain a second brightness value of a projection image to be output on a projection surface (10) in a normal manner at a second projection position, and determine a targeting method by comparing the first brightness value and the second brightness value.

[0144] At least one processor (111) may include information indicating a brightness value for each projection distance according to a projection method in the memory (113). For example, the memory (113) may store information indicating a first brightness value corresponding to a first projection distance.

[0145] At least one processor (111) can obtain a projection distance between a first projection position and a position of a projection surface (10). At least one processor (111) can obtain a brightness value corresponding to the projection distance. The brightness value according to the projection distance may vary depending on the projection method.

[0146] At least one processor (111) can compare brightness values ​​to determine a target method. A description thereof is provided in FIG. 16, FIG. 22, and FIG. 26.

[0147] At least one processor (111) obtains a brightness difference value between a first brightness value and a second brightness value, and if the brightness difference value is greater than or equal to a threshold brightness value, the second projection position can be changed closer to the projection surface (10).

[0148] The operation of changing the second projection position closer to the projection surface (10) is described in steps S2245 of Fig. 22 and S2645 of Fig. 26.

[0149] At least one processor (111) can obtain a first minimum position of the ultra-short focus method based on the position of the projection surface (10), the minimum screen size, and the first projection ratio, obtain a first maximum position of the ultra-short focus method based on the position of the projection surface (10), the size of the projection surface (10), and the first projection ratio, and obtain a first projection position between the first minimum position and the first maximum position.

[0150] At least one processor (111) can obtain a minimum projection distance corresponding to the ultra-short focus method based on the minimum screen size and the first projection ratio. At least one processor (111) can determine a position that is spaced apart from the position of the projection surface (10) by the minimum projection distance as a first minimum position. The first minimum position may correspond to the third position (P3) of FIG. 7.

[0151] At least one processor (111) can obtain a maximum projection distance corresponding to the ultra-short focus method based on the size of the projection surface (10) and the first projection ratio. At least one processor (111) can determine a position that is spaced apart from the position of the projection surface (10) by the maximum projection distance as a first maximum position. The first maximum position may correspond to the fourth position (P4) of FIG. 7.

[0152] At least one processor (111) can obtain a first projection position corresponding to the short focus method between the first minimum position and the first maximum position.

[0153] At least one processor (111) can obtain a second minimum position in the ultra-short focus manner based on the position of the projection surface (10), the minimum screen size, and the second projection ratio, obtain a second maximum position in the general manner based on the position of the projection surface (10), the size of the projection surface (10), and the second projection ratio, and obtain a second projection position between the second minimum position and the second maximum position.

[0154] At least one processor (111) can obtain a minimum projection distance corresponding to a general method based on a minimum screen size and a second projection ratio. At least one processor (111) can determine a position that is spaced apart from the position of the projection surface (10) by the minimum projection distance as a second minimum position. The second minimum position may correspond to the fifth position (P5) of FIG. 7.

[0155] At least one processor (111) can obtain a maximum projection distance corresponding to a general method based on the size of the projection surface (10) and the second projection ratio. At least one processor (111) can determine a position that is separated by the maximum projection distance from the position of the projection surface (10) as a second maximum position. The second maximum position may correspond to the sixth position (P6) of FIG. 7.

[0156] At least one processor (111) can obtain a second projection position corresponding to a general method between a second minimum position and a second maximum position.

[0157] Descriptions related to this are described in Fig. 2 and Fig. 7.

[0158] The electronic device (100) can determine a targeting method using an operation of comparing expected times based on a first projection position and a second projection position, an operation of comparing screen sizes, and an operation of comparing brightness values. By automatically determining an ultra-short-focus method or a general method through various comparison operations, the electronic device can provide the user with an optimal targeting method.

[0159] According to various embodiments, the electronic device (100) can determine a projection position while being able to apply both the ultra-short focus method and the general method. The electronic device (100) can acquire a first projection position corresponding to the ultra-short focus method and a projection position corresponding to the general method. The electronic device (100) can determine an appropriate position among the first projection position and the second projection position, and output a projection image in a manner corresponding to the determined position.

[0160] Depending on various embodiments, only one of the first projection position or the second projection position may be utilized. The electronic device (100) may first determine either the ultra-short focus method or the general method (target method). The target method may be determined by user selection. Upon receiving user input for determining the target method, the electronic device (100) may identify a projection position corresponding to the target method.

[0161] FIG. 2 is a block diagram for explaining a specific configuration of the electronic device (100) of FIG. 1, according to one embodiment.

[0162] Referring to FIG. 2, the electronic device (100) may include at least one of a processor (111), a projection unit (112), a memory (113), a communication interface (114), an operation interface (115), an input / output interface (116), a speaker (117), a microphone (118), a power supply unit (119), a driving unit (120), a sensor unit (121), or a moving member (122).

[0163] The configuration illustrated in FIG. 2 is merely an example of various embodiments, and some configurations may be omitted and new configurations may be added.

[0164] The content already explained in Fig. 1 is omitted.

[0165] At least one processor (111) may be implemented as a digital signal processor (DSP), a microprocessor, or a time controller (TCON) that processes a digital signal. However, the present invention is not limited thereto, and may include one or more of a central processing unit (CPU), a micro controller unit (MCU), a micro processing unit (MPU), a controller, an application processor (AP), a graphics-processing unit (GPU), a communication processor (CP), or an advanced reduced instruction set computer (RISC) machines (ARM) processor, or may be defined by the relevant terminology. At least one processor (111) may be implemented as a system on chip (SoC) having a built-in processing algorithm, a large scale integration (LSI), or may be implemented in the form of a field programmable gate array (FPGA). At least one processor (111) may perform various functions by executing computer executable instructions stored in a memory (113).

[0166] The projection unit (112) is a component that projects an image to the outside. According to various embodiments of the present disclosure, the projection unit (112) can be implemented in various projection methods (e.g., CRT (cathode-ray tube) method, LCD (Liquid Crystal Display) method, DLP (Digital Light Processing) method, laser method, etc.). For example, the CRT method has the same principle as a CRT monitor. The CRT method magnifies the image with a lens in front of the cathode-ray tube (CRT) and displays the image on the screen. Depending on the number of cathode-ray tubes, it is divided into a single-tube type and a three-tube type, and in the case of a three-tube type, the red, green, and blue cathode-ray tubes can be implemented separately.

[0167] Another example is the LCD method, which displays images by passing light from a light source through liquid crystals. LCD methods are divided into single-panel and three-panel types. In the case of the three-panel type, light from a light source is separated into red, green, and blue by a dichroic mirror (a mirror that reflects only a specific color of light and transmits all others). After passing through the liquid crystals, the light can be refocused into a single point.

[0168] Another example is the DLP method, which displays images using a DMD (Digital Micromirror Device) chip. The DLP projection unit may include a light source, a color wheel, a DMD chip, a projection lens, etc. The light output from the light source can be colored as it passes through the rotating color wheel. The light passing through the color wheel is input to the DMD chip. The DMD chip contains numerous micromirrors and reflects the light input to the DMD chip. The projection lens can play a role in magnifying the light reflected from the DMD chip to the image size.

[0169] Another example is a laser system that uses a Diode Pumped Solid State (DPSS) laser and a galvanometer. A multi-color laser uses three DPSS lasers, one for each RGB color, with their optical axes overlapped by a special mirror. The galvanometer includes a mirror and a high-power motor that moves the mirror at high speeds. For example, the galvanometer can rotate the mirror at up to 40 kHz / sec. The galvanometer is mounted according to the scan direction, but since projectors typically scan in a planar manner, the galvanometer can also be positioned separately along the x and y axes.

[0170] The projection unit (112) may include various types of light sources. For example, the projection unit (112) may include at least one light source among a lamp, an LED, and a laser.

[0171] The projection unit (112) can output images in a 4:3 screen ratio, a 5:4 screen ratio, or a 16:9 wide screen ratio depending on the purpose of the electronic device (100) or the user's settings, and can output images in various resolutions such as WVGA (854*480), SVGA (800*600), XGA (1024*768), WXGA (1280*720), WXGA (1280*800), SXGA (1280*1024), UXGA (1600*1200), and Full HD (1920*1080) depending on the screen ratio.

[0172] The projection unit (112) can perform various functions for adjusting the output image under the control of at least one processor (111). For example, the projection unit (112) can perform functions such as zoom, keystone, quick corner (4 corner) keystone, and lens shift.

[0173] Specifically, the projection unit (112) can enlarge or reduce the image depending on the distance from the screen (projection distance). That is, the zoom function can be performed depending on the distance from the screen. At this time, the zoom function may include a hardware method of adjusting the screen size by moving the lens and a software method of adjusting the screen size by cropping the image, etc. When the zoom function is performed, the focus of the image needs to be adjusted. For example, the method of adjusting the focus includes a manual focus method, an electric focus method, etc. The manual focus method refers to a method of focusing manually, and the electric focus method refers to a method of automatically focusing using a motor built into the projector when the zoom function is performed. When performing the zoom function, the projection unit (112) may provide a digital zoom function through software, and may provide an optical zoom function of performing the zoom function by moving the lens through the driving unit (120).

[0174] The projection unit (112) can perform a keystone correction function. If the height is not right for front projection, the screen may be distorted upwards or downwards. The keystone correction function refers to a function that corrects a distorted screen. For example, if distortion occurs in the left and right directions of the screen, it can be corrected using horizontal keystone, and if distortion occurs in the up and down directions, it can be corrected using vertical keystone. The quick corner (4 corner) keystone correction function is a function that corrects the screen when the center area of ​​the screen is normal but the corner areas are not balanced. The lens shift function is a function that moves the screen as it is when the screen is off the screen.

[0175] The projection unit (112) can automatically analyze the surrounding environment and projection environment without user input to provide zoom / keystone / focus functions. Specifically, the projection unit (112) can automatically provide zoom / keystone / focus functions based on the distance between the electronic device (100) and the screen detected by a sensor (depth camera, distance sensor, infrared sensor, light sensor, etc.), information about the space where the electronic device (100) is currently located, information about the amount of ambient light, etc.

[0176] The projection unit (112) can provide a lighting function using a light source. In particular, the projection unit (112) can provide a lighting function by outputting a light source using an LED. According to various embodiments, the projection unit (112) can include one LED, and according to other embodiments, the electronic device (100) can include a plurality of LEDs. The projection unit (112) can output a light source using a surface-emitting LED according to an implementation example. The surface-emitting LED can refer to an LED having a structure in which an optical sheet is arranged on the upper side of the LED so that the light source is evenly distributed and output. Specifically, when a light source is output through the LED, the light source can be evenly distributed through the optical sheet, and the light source distributed through the optical sheet can be incident on the display panel.

[0177] The projection unit (112) can provide the user with a dimming function for adjusting the intensity of the light source. Specifically, when a user input for adjusting the intensity of the light source is received from the user through the operation interface (115) (e.g., a touch display button or dial), the projection unit (112) can control the LED to output the intensity of the light source corresponding to the received user input.

[0178] The projection unit (112) can provide a dimming function based on content analyzed by at least one processor (111) without user input. Specifically, the projection unit (112) can control the LED to output the intensity of a light source based on information about the currently provided content (e.g., content type, content brightness, etc.).

[0179] The projection unit (112) can control the color temperature under the control of at least one processor (111). The at least one processor (111) can control the color temperature based on the content. Specifically, when the content is identified to be output, the at least one processor (111) can obtain frame-by-frame color information of the content whose output has been determined. Then, the at least one processor (111) can control the color temperature based on the obtained frame-by-frame color information. The at least one processor (111) can obtain at least one primary color of the frame based on the frame-by-frame color information. Then, the at least one processor (111) can adjust the color temperature based on the obtained at least one primary color. For example, the color temperature that the at least one processor (111) can adjust can be classified into a warm type or a cold type. It is assumed that a frame to be output (hereinafter, referred to as an output frame) includes a scene in which a fire has occurred. At least one processor (111) can identify (or obtain) that the primary color is red based on color information included in the current output frame. In addition, at least one processor (111) can identify a color temperature corresponding to the identified primary color (red). The color temperature corresponding to red may be a warm type. At least one processor (111) can use an artificial intelligence model to obtain the color information or primary color of the frame. According to various embodiments, the artificial intelligence model can be stored in the electronic device (100) (e.g., the memory (113)). According to another embodiment, the artificial intelligence model can be stored in an external server that can communicate with the electronic device (100).

[0180] The memory (113) may be implemented as an internal memory such as a ROM (e.g., an electrically erasable programmable read-only memory (EEPROM)) or RAM included in at least one processor (111), or may be implemented as a separate memory from at least one processor (111). In this case, the memory (113) may be implemented as a memory embedded in the electronic device (100) or as a memory detachable from the electronic device (100) depending on the purpose of data storage. For example, data for driving the electronic device (100) may be stored in a memory embedded in the electronic device (100), and data for expanding functions of the electronic device (100) may be stored in a memory detachable from the electronic device (100).

[0181] In the case of memory embedded in the electronic device (100), it may be implemented as at least one of volatile memory (e.g., dynamic RAM (DRAM), static RAM (SRAM), or synchronous dynamic RAM (SDRAM)), non-volatile memory (e.g., one time programmable ROM (OTPROM), programmable ROM (PROM), erasable and programmable ROM (EPROM), electrically erasable and programmable ROM (EEPROM), mask ROM, flash ROM, flash memory (e.g., NAND flash or NOR flash), etc.), hard drive, or solid state drive (SSD), and in the case of memory that can be attached or detached to the electronic device (100), it may be implemented in the form of a memory card (e.g., compact flash (CF), secure digital (SD), micro secure digital (Micro-SD), mini secure digital (Mini-SD), extreme digital (xD), multi-media card (MMC), etc.), external memory that can be connected to a USB port (e.g., USB memory), etc.

[0182] The memory (113) may store at least one command regarding the electronic device (100). In addition, the memory (113) may store an O / S (Operating System) for driving the electronic device (100). The memory (113) may also store various software programs or applications for operating the electronic device (100) according to various embodiments of the present disclosure. In addition, the memory (113) may include a semiconductor memory such as a flash memory or a magnetic storage medium such as a hard disk.

[0183] Specifically, various software modules for operating the electronic device (100) according to various embodiments of the present disclosure may be stored in the memory (113), and at least one processor (111) may control the operation of the electronic device (100) by executing various software modules stored in the memory (113). That is, the memory (113) is accessed by at least one processor (111), and data reading / recording / modifying / deleting / updating, etc. may be performed by at least one processor (111).

[0184] In the present disclosure, the term memory (113) may be used to mean a storage unit, a ROM (not shown), a RAM (not shown) in at least one processor (111), or a memory card (not shown) (e.g., a micro SD card, a memory stick) mounted on an electronic device (100).

[0185] The communication interface (114) is a configuration that performs communication with various types of external devices according to various types of communication methods. The communication interface (114) may include a wireless communication module or a wired communication module. Each communication module may be implemented in the form of at least one hardware chip.

[0186] A wireless communication module may be a module that communicates wirelessly with an external device. For example, the wireless communication module may include at least one of a Wi-Fi module, a Bluetooth module, an infrared communication module, or other communication modules.

[0187] Wi-Fi and Bluetooth modules can communicate via Wi-Fi and Bluetooth, respectively. When using a Wi-Fi or Bluetooth module, various connection information, such as the service set identifier (SSID) and session key, is first transmitted and received. This information is then used to establish a communication connection before various other information can be transmitted and received.

[0188] Infrared communication modules perform communication based on infrared communication (IrDA, infrared Data Association) technology, which transmits data wirelessly over short distances using infrared light, which is between visible light and millimeter waves.

[0189] In addition to the above-described communication method, other communication modules may include at least one communication chip that performs communication according to various wireless communication standards such as zigbee, 3G (3rd Generation), 3GPP (3rd Generation Partnership Project), LTE (Long Term Evolution), LTE-A (LTE Advanced), 4G (4th Generation), 5G (5th Generation), etc.

[0190] A wired communication module may be a module that communicates with an external device via a wire. For example, the wired communication module may include at least one of a Local Area Network (LAN) module, an Ethernet module, a paired cable, a coaxial cable, a fiber optic cable, or an Ultra Wide-Band (UWB) module.

[0191] The manipulation interface (115) may include various types of input devices. For example, the manipulation interface (115) may include a physical button. In this case, the physical button may include a function key, a directional key (e.g., a four-way key), or a dial button. According to various embodiments, the physical button may be implemented as multiple keys. According to another embodiment, the physical button may be implemented as one key. When the physical button is implemented as one key, the electronic device (100) may receive a user input in which one key is pressed for a threshold time or longer. When a user input in which one key is pressed for a threshold time or longer is received, at least one processor (111) may perform a function corresponding to the user input. For example, at least one processor (111) may provide a lighting function based on the user input.

[0192] The manipulation interface (115) can receive user input using a non-contact method. When receiving user input using a contact method, physical force must be transmitted to the electronic device (100). Therefore, a method for controlling the electronic device (100) regardless of physical force may be required. Specifically, the manipulation interface (115) can receive user gestures and perform operations corresponding to the received user gestures. The manipulation interface (115) can receive user gestures through a sensor (e.g., an image sensor or an infrared sensor).

[0193] The manipulation interface (115) can receive user input using a touch method. For example, the manipulation interface (115) can receive user input via a touch sensor. According to various embodiments, the touch method can be implemented in a non-contact manner. For example, the touch sensor can determine whether the user's body has approached within a threshold distance. The touch sensor can identify user input even when the user does not touch the touch sensor. According to another implementation example, the touch sensor can identify user input when the user touches the touch sensor.

[0194] The electronic device (100) can receive user input in various ways other than the above-described operation interface (115). In various embodiments, the electronic device (100) can receive user input through an external remote control device. The external remote control device can be a remote control device corresponding to the electronic device (100) (e.g., a dedicated control device of the electronic device (100)) or a user's portable communication device (e.g., a smartphone or wearable device). The user's portable communication device can store an application for controlling the electronic device (100). The portable communication device can obtain user input through the stored application and transmit the obtained user input to the electronic device (100). The electronic device (100) can receive user input from the portable communication device and perform an operation corresponding to the user's control command.

[0195] The electronic device (100) can receive user input using voice recognition. According to various embodiments, the electronic device (100) can receive the user's voice through a microphone included in the electronic device (100). According to other embodiments, the electronic device (100) can receive the user's voice from a microphone or an external device. Specifically, the external device can acquire the user's voice through the microphone of the external device and transmit the acquired user's voice to the electronic device (100). The user's voice transmitted from the external device can be audio data or digital data converted from audio data (e.g., audio data converted into a frequency domain, etc.). The electronic device (100) can perform an operation corresponding to the received user's voice. Specifically, the electronic device (100) can receive audio data corresponding to the user's voice through the microphone. In addition, the electronic device (100) can convert the received audio data into digital data. In addition, the electronic device (100) can convert the converted digital data into text data using the STT (Speech To Text) function. According to various embodiments, the STT (Speech To Text) function can be performed directly in the electronic device (100).

[0196] According to another embodiment, the STT (Speech To Text) function may be performed by an external server. The electronic device (100) may transmit digital data to the external server. The external server may convert the digital data into text data and obtain control command data based on the converted text data. The external server may transmit the control command data (which may also include text data) to the electronic device (100). The electronic device (100) may perform an operation corresponding to the user's voice based on the obtained control command data.

[0197] The electronic device (100) may provide a voice recognition function using a single assistant (or artificial intelligence secretary), but this is merely an example and the voice recognition function may be provided using multiple assistants. In this case, the electronic device (100) may provide the voice recognition function by selecting one of the multiple assistants based on a trigger word corresponding to the assistant or a specific key present on the remote control.

[0198] The electronic device (100) can receive user input using screen interaction. Screen interaction may refer to a function of identifying whether a predetermined event occurs through an image projected by the electronic device (100) on the screen (or projection surface) and acquiring user input based on the predetermined event. The predetermined event may refer to an event in which a predetermined object is identified at a specific location (e.g., a location where a UI for receiving user input is projected). The predetermined object may include at least one of a part of the user's body (e.g., a finger), a pointer, or a laser point. If the predetermined object is identified at a location corresponding to the projected UI, the electronic device (100) can identify that a user input for selecting the projected UI has been received. For example, the electronic device (100) may project a guide image to display the UI on the screen. In addition, the electronic device (100) can identify whether the user selects the projected UI. Specifically, the electronic device (100) can identify that the user has selected the projected UI when a predetermined event is identified at a location of the projected UI. The projected UI can include at least one item. The electronic device (100) can perform spatial analysis to identify whether the predetermined event is at the location of the projected UI. The electronic device (100) can perform spatial analysis through a sensor (e.g., an image sensor, an infrared sensor, a depth camera, a distance sensor, etc.). By performing the spatial analysis, the electronic device (100) can identify whether the predetermined event occurs at a specific location (a location where the UI is projected). In addition, when the predetermined event is identified as occurring at a specific location (a location where the UI is projected), the electronic device (100) can identify that a user input for selecting a UI corresponding to the specific location has been received.

[0199] The input / output interface (116) is configured to input / output at least one of an audio signal and an image signal. The input / output interface (116) can receive at least one of an audio signal and an image signal from an external device, and can output a control command to the external device.

[0200] Depending on the implementation example, the input / output interface (116) may be implemented as an interface that inputs / outputs only audio signals and an interface that inputs / outputs only image signals, or may be implemented as one interface that inputs / outputs both audio signals and image signals.

[0201] In various embodiments of the present disclosure, the input / output interface (116) may be implemented as at least one wired input / output interface among HDMI (High Definition Multimedia Interface), MHL (Mobile High-Definition Link), USB (Universal Serial Bus), USB C-type, DP (Display Port), Thunderbolt, VGA (Video Graphics Array) port, RGB port, D-SUB (Dsubminiature), and DVI (Digital Visual Interface). According to various embodiments, the wired input / output interface may be implemented as an interface that inputs / outputs only audio signals and an interface that inputs / outputs only image signals, or may be implemented as one interface that inputs / outputs both audio signals and image signals.

[0202] The electronic device (100) can receive data via a wired input / output interface, but this is merely an example of various embodiments, and can also receive power via the wired input / output interface. For example, the electronic device (100) can receive power from an external battery via a USB C-type or from an outlet via a power adapter. As another example, the electronic device (100) can receive power from an external device (e.g., a laptop or monitor) via a DP.

[0203] The audio signal may be implemented to be input through a wired input / output interface, and the image signal may be implemented to be input through a wireless input / output interface (or communication interface). Alternatively, the audio signal may be implemented to be input through a wireless input / output interface (or communication interface), and the image signal may be implemented to be input through a wired input / output interface.

[0204] The speaker (117) is a component that outputs an audio signal. In particular, the speaker (117) may include an audio output mixer, an audio signal processor, and an audio output module. The audio output mixer may synthesize a plurality of audio signals to be output into at least one audio signal. For example, the audio output mixer may synthesize an analog audio signal and another analog audio signal (e.g., an analog audio signal received from the outside) into at least one analog audio signal. The audio output module may include a speaker or an output terminal. According to various embodiments, the audio output module may include a plurality of speakers, and in this case, the audio output module may be arranged inside the main body, and sound emitted by covering at least a portion of the diaphragm of the audio output module may pass through a waveguide and be transmitted to the outside of the main body. The audio output module may include a plurality of audio output units, and the plurality of audio output units may be arranged symmetrically on the exterior of the main body, thereby radiating sound in all directions, that is, in a 360-degree omnidirectional manner.

[0205] The microphone (118) is a component for receiving a user's voice or other sounds and converting them into audio data. The microphone (118) can receive the user's voice in an activated state. For example, the microphone (118) can be formed integrally on the upper side, the front side, the side side, etc. of the electronic device (100). The microphone (118) can include various components such as a microphone for collecting the user's voice in analog form, an amplifier circuit for amplifying the collected user's voice, an A / D conversion circuit for sampling the amplified user's voice and converting it into a digital signal, and a filter circuit for removing noise components from the converted digital signal.

[0206] The power supply unit (119) can receive power from an external source and supply power to various components of the electronic device (100). The power supply unit (119) according to various embodiments of the present disclosure can receive power through various methods. In various embodiments, the power supply unit (119) can receive power using a connector (130) as illustrated in FIG. 1. The power supply unit (119) can receive power using a 220 V DC power cord. However, the present invention is not limited thereto, and the electronic device (100) can receive power using a USB power cord or a wireless charging method.

[0207] The power supply unit (119) can be supplied with power using an internal battery or an external battery. The power supply unit (119) according to various embodiments of the present disclosure can be supplied with power through the internal battery. For example, the power supply unit (119) can charge the power of the internal battery using at least one of a 220V DC power cord, a USB power cord, and a USB C-Type power cord, and can be supplied with power through the charged internal battery. The power supply unit (119) according to various embodiments of the present disclosure can be supplied with power through an external battery. For example, when the electronic device (100) is connected to the external battery through various wired communication methods such as a USB power cord, a USB C-Type power cord, and a socket home, the power supply unit (119) can be supplied with power through the external battery. That is, the power supply unit (119) can be supplied with power directly from the external battery, or can charge the internal battery through the external battery and be supplied with power from the charged internal battery.

[0208] The power supply unit (119) according to the present disclosure can receive power using at least one of the multiple power supply methods described above.

[0209] With respect to power consumption, the electronic device (100) may have a power consumption value (e.g., 43 W) or lower due to socket type and other standards. In this case, the electronic device (100) may vary its power consumption to reduce power consumption when using a battery. That is, the electronic device (100) may vary its power consumption based on the power supply method, power usage, etc.

[0210] The driving unit (120) can drive at least one hardware component included in the electronic device (100). The driving unit (120) can generate a physical force and transmit it to at least one hardware component included in the electronic device (100).

[0211] The driving unit (120) can generate driving power for movement of a hardware component included in the electronic device (100) (e.g., movement of the electronic device (100)) or rotation of the component (e.g., rotation of a projection lens).

[0212] The driving unit (120) can adjust the projection direction (or projection angle) of the projection unit (112). The driving unit (120) can move the position of the electronic device (100). The driving unit (120) can control a moving member to move the electronic device (100). For example, the driving unit (120) can control the moving member using a motor.

[0213] The sensor unit (121) may include at least one sensor. Specifically, the sensor unit (121) may include at least one of a tilt sensor for sensing the tilt of the electronic device (100) and an image sensor for capturing an image. The tilt sensor may be an acceleration sensor or a gyro sensor, and the image sensor may mean a camera or a depth camera. The tilt sensor may be described as a motion sensor. The sensor unit (121) may include various sensors in addition to the tilt sensor or the image sensor. For example, the sensor unit (121) may include an illuminance sensor and a distance sensor. The distance sensor may be a ToF (Time of Flight). The sensor unit (121) may include a lidar sensor.

[0214] The electronic device (100) can control a lighting function by linking with an external device. Specifically, the electronic device (100) can receive lighting information from the external device. The lighting information can include at least one of brightness information or color temperature information set in the external device. The external device can refer to a device connected to the same network as the electronic device (100) (e.g., an IoT device included in the same home / work network) or a device that is not in the same network as the electronic device (100) but can communicate with the electronic device (100) (e.g., a remote control server). For example, assume that an external lighting device (IoT device) included in the same network as the electronic device (100) is outputting red light at a brightness of 50. The external lighting device (IoT device) can directly or indirectly transmit lighting information (e.g., information indicating that it is outputting red light at a brightness of 50) to the electronic device (100). The electronic device (100) can control the output of a light source based on the lighting information received from the external lighting device. For example, if the lighting information received from the external lighting device includes information to output red light at a brightness of 50, the electronic device (100) can output red light at a brightness of 50.

[0215] The electronic device (100) can control a lighting function based on biometric information. Specifically, at least one processor (111) can obtain the user's biometric information. The biometric information can include at least one of the user's body temperature, heart rate, blood pressure, respiration, and electrocardiogram. The biometric information can include various types of information in addition to the information described above. For example, the electronic device (100) can include a sensor for measuring biometric information. The at least one processor (111) can obtain the user's biometric information through the sensor and control the output of a light source based on the obtained biometric information. As another example, the at least one processor (111) can receive the biometric information from an external device through an input / output interface (116). The external device can refer to the user's portable communication device (e.g., a smartphone or a wearable device). The at least one processor (111) can obtain the user's biometric information from the external device and control the output of the light source based on the obtained biometric information. According to an implementation example, the electronic device (100) can identify whether the user is sleeping, and if the user is identified as sleeping (or preparing to sleep), at least one processor (111) can control the output of the light source based on the user's biometric information.

[0216] An electronic device (100) according to various embodiments of the present disclosure can provide various smart functions.

[0217] Specifically, the electronic device (100) is connected to a portable terminal device for controlling the electronic device (100), and a screen output from the electronic device (100) can be controlled through user input input from the portable terminal device. As an example, the portable terminal device can be implemented as a smartphone including a touch display, and the electronic device (100) receives screen data provided by the portable terminal device from the portable terminal device and outputs it, and a screen output from the electronic device (100) can be controlled according to user input input from the portable terminal device.

[0218] The electronic device (100) can share content or music provided by the mobile terminal device by connecting to the mobile terminal device through various communication methods such as Miracast, Airplay, wireless DEX, and Remote PC.

[0219] In addition, the mobile terminal device and the electronic device (100) can be connected in various connection methods. In various embodiments, the mobile terminal device can search for the electronic device (100) to perform a wireless connection, or the electronic device (100) can search for the mobile terminal device to perform a wireless connection. In addition, the electronic device (100) can output content provided by the mobile terminal device.

[0220] In various embodiments, when a mobile terminal device is placed near an electronic device (100) while specific content or music is being output from the mobile terminal device, and a preset gesture is detected through the display of the mobile terminal device (e.g., motion tap view), the electronic device (100) can output the content or music being output from the mobile terminal device.

[0221] In various embodiments, when the mobile terminal device is outputting specific content or music and the mobile terminal device comes closer to the electronic device (100) to a preset distance or less (e.g., non-contact tap view) or the mobile terminal device comes into contact with the electronic device (100) twice at a short interval (e.g., contact tap view), the electronic device (100) can output the content or music being output by the mobile terminal device.

[0222] In the above-described embodiment, it has been described that the same screen as the screen provided by the mobile terminal device is provided by the electronic device (100), but the present disclosure is not limited thereto. That is, when a connection is established between the mobile terminal device and the electronic device (100), the mobile terminal device may output a first screen provided by the mobile terminal device, and the electronic device (100) may output a second screen provided by the mobile terminal device that is different from the first screen. For example, the first screen may be a screen provided by a first application installed on the mobile terminal device, and the second screen may be a screen provided by a second application installed on the mobile terminal device. For example, the first screen and the second screen may be different screens provided by a single application installed on the mobile terminal device. For example, the first screen may be a screen including a remote control-type UI for controlling the second screen.

[0223] An electronic device (100) according to the present disclosure can output a standby screen. For example, if the electronic device (100) is not connected to an external device or if no input is received from the external device for a preset period of time, the electronic device (100) can output a standby screen. Conditions for the electronic device (100) to output a standby screen are not limited to the examples described above, and the standby screen can be output under various conditions.

[0224] The electronic device (100) may output a standby screen in the form of a blue screen, but the present disclosure is not limited thereto. For example, the electronic device (100) may extract only the shape of a specific object from data received from an external device, acquire an amorphous object, and output a standby screen including the acquired amorphous object.

[0225] The electronic device (100) may further include a display (not shown).

[0226] The display (not shown) can be implemented as various types of displays such as an LCD (Liquid Crystal Display), an OLED (Organic Light Emitting Diodes) display, a PDP (Plasma Display Panel), etc. The display (not shown) may also include a driving circuit, a backlight unit, etc., which can be implemented as a type of a-si TFT (amorphous silicon thin film transistor), LTPS (low temperature poly silicon) TFT, OTFT (organic TFT), etc. The display (not shown) may be implemented as a touch screen combined with a touch sensor, a flexible display, a three-dimensional display (3D display, three-dimensional display), etc. According to various embodiments of the present disclosure, the display (not shown) may include not only a display panel that outputs an image, but also a bezel that houses the display panel. In particular, according to various embodiments of the present disclosure, the bezel may include a touch sensor (not shown) for detecting user interaction.

[0227] The electronic device (100) may further include a shutter unit (not shown).

[0228] The shutter portion (not shown) may include at least one of a shutter, a fixing member, a rail, or a body.

[0229] The shutter can block light output from the projection unit (112). The fixing member can fix the position of the shutter. The rail can be a path for moving the shutter and the fixing member. The body can be configured to include the shutter and the fixing member.

[0230] The movable member (122) may refer to a member for moving from a first position to a second position in a space where the electronic device (100) is placed. The electronic device (100) may control the movable member (122) to move the electronic device (100) using a force generated by the driving unit (120). The electronic device (100) may generate a force to be transmitted to the movable member (122) using a motor included in the driving unit (120).

[0231] The movable member (122) may include at least one wheel (e.g., a circular wheel). The electronic device (100) may move to a target location (or target position) through the movable member. When a user input or a control command is received, the electronic device (100) may rotate the movable member by transmitting a force generated through a motor to the movable member. The electronic device (100) may control the movable member to adjust the rotation speed, rotation direction, etc. The electronic device (100) may perform a movement operation (or movement function) by controlling the movable member based on the target location or the direction of movement, etc.

[0232] FIG. 3 is a drawing for explaining a first projection position and a second projection position according to one embodiment.

[0233] Referring to the embodiment (310) of FIG. 3, the electronic device (100) can identify the current location of the electronic device (100). The current location of the electronic device (100) can be described as a first location (P1). The electronic device (100) can identify the location of the projection surface (10). The location of the projection surface (10) can be described as a second location (P2). The electronic device (100) can determine the second location (P2) as the center point of the projection surface (10).

[0234] The electronic device (100) can determine a projection method. The projection method may be at least one of an ultra-short focus method or a normal method. To operate in an ultra-short focus method, the electronic device (100) can utilize a lens corresponding to the ultra-short focus method.

[0235] The electronic device (100) can obtain a minimum position in an ultra-short focus manner that can output a minimum screen size in an ultra-short focus manner. The minimum position in the ultra-short focus manner can be described as a third position (P3). The minimum position can indicate a minimum position that must be away from the projection surface (10). Since the minimum screen size must be output, the electronic device (100) may not be positioned closer to the projection surface (10) than the minimum position.

[0236] The electronic device (100) can obtain a maximum position in the ultra-short focus mode that can output the maximum screen size in the ultra-short focus mode. The maximum position in the ultra-short focus mode can be described as a fourth position (P4). The maximum position can indicate the maximum position that must be away from the projection surface (10). Since the output cannot exceed the maximum screen size, the electronic device (100) can be positioned closer to the projection surface (10) than the maximum position.

[0237] The electronic device (100) can obtain a minimum position in a general manner that can output a minimum screen size in a general manner. The minimum position in a general manner can be described as a fifth position (P5). The minimum position can indicate a minimum position that must be away from the projection surface (10). Since the minimum screen size must be output, the electronic device (100) may not be positioned closer to the projection surface (10) than the minimum position.

[0238] The electronic device (100) can obtain a maximum position in a general manner that can output the maximum screen size in a general manner. The maximum position in a general manner can be described as a sixth position (P6). The maximum position can indicate a maximum position that must be away from the projection surface (10). Since the output cannot exceed the maximum screen size, the electronic device (100) can be positioned closer to the projection surface (10) than the maximum position.

[0239] When operating in an ultra-short focus mode, the electronic device (100) can acquire (or determine) a first projection position (T1) for performing a projection function in an ultra-short focus mode. The electronic device (100) can determine the first projection position (T1) between a third position (P3) and a fourth position (P4).

[0240] Referring to the embodiment (320) of FIG. 3, the electronic device (100) can identify a central vertical line (11) of the projection surface (10). The central vertical line (11) of the projection surface (10) can contact the floor surface (20). The central vertical line (11) of the projection surface (10) can cross the center of the projection surface (10). The electronic device (100) can identify a floor surface (20) that contacts the projection surface (10). The electronic device (100) can determine a position of the vertical line (11) that contacts the floor surface (20) as a second position (P2). The second position (P2) can be a representative position of the projection surface (10).

[0241] The electronic device (100) can identify a central vertical line (12) of the floor surface (20). The central vertical line (12) of the floor surface (20) can contact the projection surface (10). The central vertical line (12) of the floor surface (20) can cross the center of the floor surface (20). The electronic device (100) can determine a third position (P3), a fourth position (P4), a fifth position (P5), a sixth position (P6), etc., from the central vertical line (13) of the floor surface (20). According to various embodiments, the electronic device (100) can determine a seventh position (P7), an eighth position (P8), a ninth position (P9), a tenth position (P10), an eleventh position (P11), etc., from the central vertical line (13) of the floor surface (20).

[0242] According to one embodiment, the electronic device (100) may use a central vertical line (11) of the projection surface (10), a central vertical line (12) of the floor surface (20), and a horizontal line (13) of the projection surface (10) to utilize three-dimensional space coordinates. The central vertical line (11) of the projection surface (10) may correspond to the z-axis. The central vertical line (12) of the floor surface (20) may correspond to the x-axis. The horizontal line (13) of the projection surface (10) may correspond to the y-axis.

[0243] According to one embodiment, the electronic device (100) may utilize a central vertical line (12) of the floor surface (20) and a horizontal line (13) of the projection surface (10) in utilizing two-dimensional spatial coordinates. The central vertical line (12) of the floor surface (20) may correspond to the x-axis. The horizontal line (13) of the projection surface (10) may correspond to the y-axis.

[0244] The electronic device (100) can determine the second position (P2) as the origin (or reference point) of the spatial coordinates. The electronic device (100) can determine the positions (P3 to P6) based on the central vertical line (12) of the floor surface (20) where the value corresponding to the y-axis or / and the value corresponding to the z-axis is 0.

[0245] FIG. 4 is a diagram illustrating an operation of obtaining various positions used to determine a projection position, according to one embodiment.

[0246] Referring to FIG. 4, the electronic device (100) can obtain a minimum screen size when performing a projection function (S405). The minimum screen size may be described as the minimum size of a projection image or the minimum size of an area where a projection image is to be output.

[0247] The electronic device (100) can obtain the minimum size of the screen to be projected. The electronic device (100) can determine the minimum screen size based on category information of the projected image. A preset minimum size can be determined in advance in response to the category information.

[0248] The electronic device (100) can obtain category information of content to be output according to a user command. The electronic device (100) can obtain a minimum screen size corresponding to the category information of the content.

[0249] The electronic device (100) can obtain a maximum screen size when performing a projection function (S410). The maximum screen size may be described as the maximum size of a projection image or the maximum size of an area where a projection image is to be output.

[0250] The electronic device (100) can obtain the maximum size of the screen to be projected. The electronic device (100) can obtain the maximum screen size depending on the size of the projection surface (10). As the size of the projection surface (10) increases, the maximum screen size can also increase.

[0251] The electronic device (100) can obtain a first location (P1) indicating the current location of the electronic device (100) (S415).

[0252] The electronic device (100) can obtain a second position (P2) indicating the position of the projection surface (10) (S420).

[0253] The electronic device (100) can obtain a third position (P3) capable of outputting a projection image in a short-focus manner at a minimum screen size (S425).

[0254] The electronic device (100) can obtain a fourth position (P4) capable of outputting a projection image at the maximum screen size in an ultra-short focus manner (S430).

[0255] The electronic device (100) can obtain a fifth position (P5) capable of outputting a projection image in a minimum screen size in a general manner (S435).

[0256] The electronic device (100) can obtain a sixth position (P6) capable of outputting a projection image at the maximum screen size in a general manner (S440).

[0257] FIG. 5 is a drawing for explaining an operation of determining a short-focus method or a general method according to one embodiment.

[0258] Referring to FIG. 5, the electronic device (100) can determine projection positions for each of the ultra-short focus method and the general method (S510). The electronic device (100) can determine the position at which the projection image is projected in the ultra-short focus method as the first projection position. The electronic device (100) can determine the position at which the projection image is projected in the general method as the second projection position.

[0259] The electronic device (100) may perform a comparison operation to determine whether to project using the ultra-short focus method or the normal method. The comparison operation may include at least one of a prediction time comparison operation, a screen size comparison operation, and a brightness value comparison operation. The comparison operation may include an operation of comparing a value corresponding to the ultra-short focus method with a value corresponding to the normal method.

[0260] The electronic device (100) can compare the predicted time (S520). The predicted time can be described as the preparation time.

[0261] The electronic device (100) can compare screen sizes (S530). The screen size can indicate the size of the area where the projection image is output among the entire area of ​​the projection surface (10).

[0262] The electronic device (100) can compare brightness values ​​(S540).

[0263] The electronic device (100) can determine either the ultra-short focus method or the normal method based on the result of the comparison operation (S550).

[0264] The electronic device (100) can move to a projection position corresponding to the determined method and output a projection image (S560). If the ultra-short-focus method is determined, the electronic device (100) can move to a first projection position and output a projection image. If the general method is determined, the electronic device (100) can move to a second projection position and output a projection image.

[0265] FIG. 6 is a drawing for explaining an operation for determining a projection method according to one embodiment.

[0266] Steps S610, S620, S630, S640, S650, and S660 of FIG. 6 may correspond to steps S510, S520, S530, S540, S550, and S560 of FIG. 5. Duplicate explanations are omitted.

[0267] The electronic device (100) can obtain (or calculate) a first projection position corresponding to the ultra-short focus method and a second projection position corresponding to the general method (S610).

[0268] The electronic device (100) can compare a first prediction time obtained based on a first projection position and a second prediction time obtained based on a second projection position (S620). The electronic device (100) can obtain the first prediction time by considering the time it takes to move from the current position to the first projection position. The electronic device (100) can obtain the second prediction time by considering the time it takes to move from the current position to the second projection position.

[0269] The electronic device (100) can compare the first screen size acquired based on the first projection position and the second screen size acquired based on the second projection position (S630). When the electronic device (100) outputs a projection image in an ultra-short focus manner at the first projection position, the electronic device (100) can acquire the first screen size of the projection image to be output on the projection surface (10). When the electronic device (100) outputs a projection image in a general manner at the second projection position, the electronic device (100) can acquire the second screen size of the projection image to be output on the projection surface (10).

[0270] The electronic device (100) can compare a first brightness value acquired based on a first projection position and a second brightness value acquired based on a second projection position (S640). When the electronic device (100) outputs a projection image in an ultra-short focus manner at the first projection position, the electronic device (100) can acquire a first brightness value of the projection image to be output on the projection surface (10). When the electronic device (100) outputs a projection image in a general manner at the second projection position, the electronic device (100) can acquire a second brightness value of the projection image to be output on the projection surface (10). The brightness value can be described as an illuminance value.

[0271] The first prediction time, the second prediction time, the first screen size, the second screen size, the first brightness value, the second brightness value, etc. may correspond to expected values ​​predicted by the electronic device (100).

[0272] FIG. 7 is a drawing for explaining a calculation method according to an area where an electronic device (100) is located, according to one embodiment.

[0273] Referring to the embodiment (700) of FIG. 7, the electronic device (100) can identify a preset area. The preset area may be an area divided based on the central vertical line (12) of the floor surface (20) corresponding to the x-axis in the embodiment (320) of FIG. 3. The preset area may include at least one area.

[0274] The electronic device (100) can determine whether the electronic device (100) is included in a preset area by using a value corresponding to the x-axis among coordinate information related to the current location of the electronic device (100).

[0275] The electronic device (100) may determine the area between the second position (P2) and the third position (P3) based on the central vertical line (12) as the first area (r1). When the electronic device (100) is positioned in the first area (r1), the electronic device (100) may determine the third position (P3) as the first projection position and the fifth position (P5) as the second projection position. When the electronic device (100) is positioned in the first area (r1), the electronic device (100) may not perform a size comparison operation. The size comparison operation may be meaningless because the electronic device (100) must move to the third position (P3) or the fifth position (P5) to output a projection image at the minimum screen size.

[0276] The electronic device (100) can determine the area between the third position (P3) and the fourth position (P4) based on the central vertical line (12) as the second area (r2). When the electronic device (100) is located in the second area (r2), the electronic device (100) can determine the seventh position (P7) corresponding to the current position based on the central vertical line (12) as the first projection position, and determine the fifth position (P5) as the second projection position.

[0277] The electronic device (100) can determine the area between the fourth position (P4) and the fifth position (P5) based on the central vertical line (12) as the third area (r3). When the electronic device (100) is located in the third area (r3), the electronic device (100) can determine the fourth position (P4) as the first projection position and the fifth position (P5) as the second projection position.

[0278] The electronic device (100) can determine the area between the fifth position (P5) and the sixth position (P6) based on the central vertical line (12) as the fourth area (r4). When the electronic device (100) is located in the fourth area (r4), the electronic device (100) can determine the fourth position (P4) as the first projection position, and determine the ninth position (P9) corresponding to the current position based on the central vertical line (12) as the second projection position.

[0279] The electronic device (100) may determine an area further from the projection surface (10) than the sixth position (P6) based on the central vertical line (12) as the fifth area (r5). When the electronic device (100) is positioned in the fifth area (r5), the electronic device (100) may determine the fourth position (P4) as the first projection position and the sixth position (P6) as the second projection position. When the electronic device (100) is positioned in the fifth area (r5), the electronic device (100) may not perform a size comparison operation. The size comparison operation may be meaningless because the electronic device (100) must move to the fourth position (P4) or the sixth position (P6) so that the projection image is output smaller than the maximum screen size.

[0280] Figure 8 is a drawing for explaining a preset area according to one embodiment.

[0281] The embodiment (800) of Fig. 8 illustrates dividing the preset area into three. In the ultra-short focus method, the screen size may change more rapidly than in the general method depending on the projection position. The rapid change in screen size may result in a large calculation error. When dividing the preset area, the third position (P3) and fourth position (P4) related to the ultra-short focus method may not be considered.

[0282] The electronic device (100) may determine the area between the second position (P2) and the fifth position (P5) based on the central vertical line (12) as the first area (r1). When the electronic device (100) is positioned in the first area (r1), the electronic device (100) may determine the third position (P3) as the first projection position and the fifth position (P5) as the second projection position. When the electronic device (100) is positioned in the first area (r1), the electronic device (100) may not perform a size comparison operation. The size comparison operation may be meaningless because the electronic device (100) must move to the third position (P3) or the fifth position (P5) to output a projection image at the minimum screen size.

[0283] The electronic device (100) can determine the area between the fifth position (P5) and the sixth position (P6) based on the central vertical line (12) as the fourth area (r4). When the electronic device (100) is located in the fourth area (r4), the electronic device (100) can determine the fourth position (P4) as the first projection position, and determine the ninth position (P9) corresponding to the current position based on the central vertical line (12) as the second projection position.

[0284] The electronic device (100) may determine an area further from the projection surface (10) than the sixth position (P6) based on the central vertical line (12) as the fifth area (r5). When the electronic device (100) is positioned in the fifth area (r5), the electronic device (100) may determine the fourth position (P4) as the first projection position and the sixth position (P6) as the second projection position. When the electronic device (100) is positioned in the fifth area (r5), the electronic device (100) may not perform a size comparison operation. The size comparison operation may be meaningless because the electronic device (100) must move to the fourth position (P4) or the sixth position (P6) so that the projection image is output smaller than the maximum screen size.

[0285] FIG. 9 is a drawing for explaining a situation in which an electronic device (100) is located in a first region (r1), according to one embodiment.

[0286] Referring to the embodiment (900) of FIG. 9, the electronic device (100) can obtain a first position (P1) indicating the current position of the electronic device (100). The electronic device (100) can determine whether the x-axis value of the first position (P1) is included in the first region (r1). If the electronic device (100) is located in the first region (r1), the electronic device (100) can determine the third position (P3) as the first projection position and the fifth position (P5) as the second projection position.

[0287] The electronic device (100) can perform a comparison operation based on the first projection position and the second projection position. As a result of the comparison operation, the electronic device (100) can determine whether to output the projection image in an ultra-short focus manner or in a normal manner.

[0288] FIG. 10 is a drawing for explaining an operation of obtaining a prediction time when an electronic device (100) is located in a first region (r1), according to one embodiment.

[0289] Referring to FIG. 10, the electronic device (100) can determine whether the electronic device (100) is located in the first region (r1) (S1005).

[0290] When the electronic device (100) is located in the first region (r1) (S1005-Y), the electronic device (100) can determine the third position (P3) as the first projection position of the ultra-short focus method (S1011).

[0291] The electronic device (100) can obtain the first prediction time of the ultra-short focus method by adding the first movement time and the transition time from the first position (P1) to the first projection position [third position (P3)] (S1012).

[0292] The electronic device (100) can obtain an expected first movement time from a first location (P1) to a third location (P3). The electronic device (100) can obtain a movement speed of the electronic device (100). The electronic device (100) can obtain the first movement time based on the movement distance and movement speed from the first location (P1) to the third location (P3).

[0293] The electronic device (100) can obtain the first predicted time by adding the first movement time and the transition time.

[0294] The transition time may include at least one of a time to switch from a normal mode to an ultra-short focus mode (tc1) or a time to switch from an ultra-short focus mode to a normal mode (tc2).

[0295] If the current electronic device (100) is set to the normal mode, it is necessary to convert the state of the electronic device (100) to the ultra-short focus mode in order to output a projection image in the ultra-short focus mode. The electronic device (100) can obtain a transition time for converting from the normal mode to the ultra-short focus mode. The transition time may include a fixed value (tc1) as a pre-measured time. The electronic device (100) can obtain a first predicted time by adding the first movement time and the preset time (tc1).

[0296] If the current electronic device (100) is set to the ultra-short focus mode, there is no need to change the state of the electronic device (100) to output a projection image in the ultra-short focus mode. The transition time may be 0 when calculating the first prediction time. The electronic device (100) can obtain the first movement time as the first prediction time.

[0297] When the electronic device (100) is located in the first region (r1) (S1005-Y), the electronic device (100) can determine the fifth position (P5) as the second projection position in the general manner (S1013).

[0298] The electronic device (100) can obtain a second prediction time of the ultra-short focus method by adding the second movement time and transition time from the first position (P1) to the second projection position [the fifth position (P5)] (S1014).

[0299] The electronic device (100) can obtain an expected second movement time from the first location (P1) to the fifth location (P5). The electronic device (100) can obtain a movement speed of the electronic device (100). The electronic device (100) can obtain the second movement time based on the movement distance and movement speed from the first location (P1) to the fifth location (P5).

[0300] The electronic device (100) can obtain the second prediction time by adding the second movement time and the transition time.

[0301] If the current electronic device (100) is set to the normal mode, there is no need to change the state of the electronic device (100) to output the projection image in the normal mode. The transition time may be 0 when calculating the second prediction time. The electronic device (100) may obtain the second movement time as the second prediction time.

[0302] If the current electronic device (100) is set to the ultra-short focus mode, it is necessary to convert the state of the electronic device (100) to the normal mode in order to output the projection image in the normal mode. The electronic device (100) can obtain the transition time for converting from the ultra-short focus mode to the normal mode. The transition time may include a fixed value (tc2) as a pre-measured time. The electronic device (100) can obtain the second predicted time by adding the second movement time and the preset time (tc2).

[0303] The electronic device (100) can compare the first prediction time and the second prediction time (S1020). The operation of comparing the first prediction time and the second prediction time is described in FIG. 11.

[0304] FIG. 11 is a drawing for explaining an operation of comparing a predicted time and an operation of comparing a brightness value when an electronic device (100) is located in a first region (r1), according to one embodiment.

[0305] Referring to FIG. 11, the electronic device (100) can compare the first prediction time and the second prediction time. The electronic device (100) can identify whether the first prediction time is less than or equal to the second prediction time (S1121).

[0306] If the first prediction time is less than or equal to the second prediction time (S1121-Y), the electronic device (100) can move to the first projection position (S1161). The electronic device (100) can output a projection image based on an ultra-short focus method at the first projection position (S1162).

[0307] If the first prediction time is not less than or equal to the second prediction time (S1121-N), the electronic device (100) can perform a brightness comparison operation.

[0308] If the first prediction time is not less than or equal to the second prediction time (S1121-N), the electronic device (100) can obtain a first brightness value corresponding to the ultra-short focus method based on the first projection position (S1141).

[0309] The electronic device (100) can obtain a second brightness value corresponding to the general method based on the second projection position (S1142).

[0310] The electronic device (100) can obtain a brightness difference value between a first brightness value and a second brightness value (S1143).

[0311] The electronic device (100) can identify whether the brightness difference value is greater than or equal to a threshold brightness value (S1144).

[0312] If the brightness difference value is greater than or equal to the threshold brightness value (S1144-Y), the electronic device (100) can perform steps S1161 and S1162. The electronic device (100) can output a projection image in an ultra-short focus manner at the first projection position.

[0313] If the brightness difference value is not greater than the threshold brightness value (S1144-N), the electronic device (100) can move to the second projection position (S1163). The electronic device (100) can output the projection image based on the general method at the second projection position (S1164).

[0314] FIG. 12 is a drawing for explaining a situation in which an electronic device (100) is located in a second region (r2), according to one embodiment.

[0315] Referring to the embodiment (1200) of FIG. 12, the electronic device (100) can obtain a first position (P1) indicating the current position of the electronic device (100). The electronic device (100) can determine whether the x-axis value of the first position (P1) is included in the second region (r2). If the electronic device (100) is located in the second region (r2), the electronic device (100) can obtain a seventh position (P7).

[0316] The electronic device (100) can obtain the seventh position (P7) by converting the y-axis and z-axis values ​​to 0 at the first position (P1) and maintaining the x-axis value. For example, assume that the coordinates of the first position (P1) are (x1, y1, z1). The electronic device (100) can determine (x1, 0, 0) as the seventh position (P7). Assume that the coordinates of the first position (P1) are (x1, y1). The electronic device (100) can determine (x1, 0) as the seventh position (P7).

[0317] The electronic device (100) can obtain a seventh position (P7) corresponding to the first position (P1) on the x-axis representing the central vertical line (12) of the floor surface (20).

[0318] When the electronic device (100) is located in the second region (r2), the electronic device (100) can determine the seventh position (P7) as the first projection position and the fifth position (P5) as the second projection position.

[0319] The electronic device (100) can perform a comparison operation based on the first projection position and the second projection position. As a result of the comparison operation, the electronic device (100) can determine whether to output the projection image in an ultra-short focus manner or in a normal manner.

[0320] FIG. 13 is a diagram for explaining an operation of obtaining a prediction time when an electronic device (100) is located in a second region (r2), according to one embodiment.

[0321] Steps S1312, S1313, S1314, and S1320 of FIG. 13 may correspond to steps S1012, S1013, S1014, and S1020 of FIG. 10. Duplicate explanations are omitted.

[0322] Referring to FIG. 13, the electronic device (100) can determine whether the electronic device (100) is located in the second region (r2) (S1305).

[0323] When the electronic device (100) is located in the second region (r2) (S1305-Y), the electronic device (100) can obtain the seventh position (P7) based on the first position (P1) (S1311-1).

[0324] The electronic device (100) can determine the seventh position (P7) as the first projection position of the ultra-short focus method (S1311-2).

[0325] The electronic device (100) can obtain the first prediction time of the ultra-short focus method by adding the first movement time and the transition time from the first position (P1) to the first projection position [seventh position (P7)] (S1312).

[0326] The electronic device (100) can perform steps S1313, S1314, and S1320.

[0327] FIG. 14 is a drawing for explaining an operation of changing a second projection position when an electronic device (100) is located in a second region (r2), according to one embodiment.

[0328] Referring to the embodiment (1400) of FIG. 14, the electronic device (100) can change the second projection position from the fifth position (P5) to the eighth position (P8).

[0329] The electronic device (100) can change the second projection position based on the result of the comparison operation. The electronic device (100) can change the second projection position to a position further away from the projection surface (10).

[0330] The limit point for the change operation may be the sixth position (P6). If the second projection position is changed to a position further away from the projection surface (10) than the sixth position (P6), the output size of the projection image becomes larger than the maximum size, so the second projection position can only be changed up to the sixth position (P6). The change unit may be a preset unit. For example, the change unit may be 1 cm, 10 cm, etc.

[0331] The electronic device (100) can compare the first screen size of the projection image to be output in an ultra-short focus manner at a first projection position with the second screen size of the projection image to be output in a normal manner at a second projection position. The electronic device (100) can change the second projection position based on the comparison result.

[0332] FIG. 15 is a drawing for explaining an operation of comparing screen sizes when an electronic device (100) is located in a second area (r2), according to one embodiment.

[0333] Referring to FIG. 15, the electronic device (100) can compare the first prediction time and the second prediction time. The electronic device (100) can identify whether the first prediction time is less than or equal to the second prediction time (S1521).

[0334] If the first prediction time is less than or equal to the second prediction time (S1521-Y), the electronic device (100) can move to the first projection position (S1561). The electronic device (100) can output a projection image based on an ultra-short focus method at the first projection position (S1562).

[0335] If the first prediction time is not less than or equal to the second prediction time (S1521-N), the electronic device (100) can obtain a first screen size capable of projecting in an ultra-short focus manner based on the first projection position (S1531). When outputting a projection image in an ultra-short focus manner at the first projection position, the electronic device (100) can obtain the size of the projection image to be output on the projection surface (10) as the first screen size.

[0336] The electronic device (100) can obtain a second screen size that can be projected in a normal manner based on the second projection position (S1532). When outputting a projection image in a normal manner at the second projection position, the electronic device (100) can obtain the size of the projection image to be output on the projection surface (10) as the second screen size.

[0337] The electronic device (100) can obtain a size difference value between the first screen size and the second screen size (S1533). The electronic device (100) can determine whether the size difference value is greater than or equal to a threshold size value (S1534).

[0338] If the size difference value is greater than or equal to the threshold size value (S1534-Y), the electronic device (100) can change the second projection position (S1535). The electronic device (100) can change the second projection position so that it is further away from the projection surface (10). The electronic device (100) can change the second projection position using the sixth position (P6) as a limit point. The electronic device (100) can change the second projection position so that the second projection position is further away from the projection surface (10) by a preset unit.

[0339] According to various embodiments, if the second projection position is already identified as being at the limit point, the electronic device (100) can move the first projection position without changing the second projection position any further and output the projection image to the projection surface (10) in an ultra-short focus manner (S1561, S1562).

[0340] When the second projection position is changed, the electronic device (100) can change the second prediction time based on the changed second projection position. The electronic device (100) can re-acquire the second movement time from the first position (P1) to the changed second projection position. The electronic device (100) can change the second prediction time by adding the transition time to the re-acquired second movement time.

[0341] If the second prediction time changes, the electronic device (100) can re-perform the operation of comparing the first prediction time and the second prediction time. The electronic device (100) can re-perform operation S1521.

[0342] If the size difference value is not greater than the threshold size value (S1534-N), the electronic device (100) can perform a brightness value comparison operation (S1540). A description related to this is described in FIG. 16.

[0343] FIG. 16 is a drawing for explaining an operation of comparing brightness values ​​when an electronic device (100) is located in a second region (r2), according to one embodiment.

[0344] Referring to FIG. 16, the electronic device (100) can obtain a first brightness value corresponding to the ultra-short focus method based on the first projection position (S1641). When outputting a projection image in the ultra-short focus method at the first projection position, the electronic device (100) can obtain the first brightness value of the projection image to be output on the projection surface (10).

[0345] The electronic device (100) can obtain a second brightness value corresponding to the general method based on the second projection position (S1642). When outputting a projection image in the general method at the second projection position, the electronic device (100) can obtain the second brightness value of the projection image to be output on the projection surface (10).

[0346] The electronic device (100) can obtain a brightness difference value between the first brightness value and the second brightness value (S1643).

[0347] The electronic device (100) can determine whether the brightness difference value is greater than or equal to a threshold brightness value (S1644).

[0348] If the brightness difference value is greater than or equal to the threshold brightness value (S1644-Y), the electronic device (100) can move to the first projection position (S1661). The electronic device (100) can output a projection image to the projection surface (10) based on the ultra-short focus method at the first projection position (S1662).

[0349] If the brightness difference value is not greater than the threshold brightness value (S1644-N), the electronic device (100) can move to the second projection position (S1663). The electronic device (100) can output the projection image to the projection surface (10) in a general manner at the second projection position (S1664).

[0350] If the brightness difference value is greater than or equal to the threshold brightness value, the second projection position can be changed closer to the projection surface (10). However, if the electronic device (100) is located in the second region (r2), the minimum screen size cannot be satisfied if the second projection position is changed closer to the projection surface (10) than the fifth position (P5). Therefore, the electronic device (100) can utilize the ultra-short focus method without changing the second projection position.

[0351] FIG. 17 is a drawing for explaining a situation in which an electronic device (100) is located in a third region (r3), according to one embodiment.

[0352] Referring to an embodiment (1700) of FIG. 17, the electronic device (100) can obtain a first position (P1) indicating the current position of the electronic device (100). The electronic device (100) can determine whether the x-axis value of the first position (P1) is included in the third region (r3). If the electronic device (100) is located in the first region (r1), the electronic device (100) can determine the fourth position (P4) as the first projection position and the fifth position (P5) as the second projection position.

[0353] The electronic device (100) can perform a comparison operation based on the first projection position and the second projection position. As a result of the comparison operation, the electronic device (100) can determine whether to output the projection image in an ultra-short focus manner or in a normal manner.

[0354] FIG. 18 is a diagram for explaining an operation of obtaining a prediction time when an electronic device (100) is located in a third region (r3), according to one embodiment.

[0355] Steps S1811, S1812, S113, S1814, and S1820 of FIG. 18 may correspond to steps S1011, S1012, S113, S1014, and S1020 of FIG. 10.

[0356] The electronic device (100) can determine whether the electronic device (100) is located in the third region (r3) (S1805).

[0357] When the electronic device (100) is located in the third region (r3) (S1805-Y), the electronic device (100) can determine the fourth position (P4) as the first projection position of the ultra-short focus method (S1811). The electronic device (100) can perform steps S1812, S1813, S1814, and S1820.

[0358] The electronic device (100) can obtain a first prediction time and a second prediction time. The electronic device (100) can compare the first prediction time and the second prediction time (S1820). The operation of comparing the prediction times is described in FIG. 15. The description described in FIG. 15 can also be applied when the electronic device (100) is located in the third region (r3) as well as the second region (r2).

[0359] The electronic device (100) can perform a brightness value comparison operation in the embodiment of FIG. 15 (S1540). The operation of comparing brightness values ​​is described in FIG. 16. The description described in FIG. 16 can also be applied when the electronic device (100) is located in the third region (r3) as well as the second region (r2).

[0360] FIG. 19 is a drawing for explaining a situation in which an electronic device (100) is located in a fourth region (r4), according to one embodiment.

[0361] FIG. 19 is a drawing for explaining a situation in which an electronic device (100) is located in a fourth region (r4), according to one embodiment.

[0362] Referring to the embodiment (1900) of FIG. 19, the electronic device (100) can obtain a first position (P1) indicating the current position of the electronic device (100). The electronic device (100) can determine whether the x-axis value of the first position (P1) is included in the fourth region (r4). If the electronic device (100) is located in the fourth region (r4), the electronic device (100) can obtain a ninth position (P9).

[0363] The electronic device (100) can obtain the ninth position (P9) by converting the y-axis and z-axis values ​​to 0 at the first position (P1) and maintaining the x-axis value. For example, assume that the coordinates of the first position (P1) are (x1, y1, z1). The electronic device (100) can determine (x1, 0, 0) as the ninth position (P9). Assume that the coordinates of the first position (P1) are (x1, y1). The electronic device (100) can determine (x1, 0) as the ninth position (P9).

[0364] The electronic device (100) can obtain a ninth position (P9) corresponding to the first position (P1) on the x-axis representing the central vertical line (12) of the floor surface (20).

[0365] When the electronic device (100) is located in the fourth region (r4), the electronic device (100) can determine the fourth position (P4) as the first projection position and the ninth position (P9) as the second projection position.

[0366] The electronic device (100) can perform a comparison operation based on the first projection position and the second projection position. As a result of the comparison operation, the electronic device (100) can determine whether to output the projection image in an ultra-short focus manner or in a normal manner.

[0367] FIG. 20 is a diagram for explaining an operation of obtaining a prediction time when an electronic device (100) is located in a fourth region (r4), according to one embodiment.

[0368] Steps S2011, S2012, S2014, and S2020 of FIG. 20 may correspond to steps S1011, S1012, S1014, and S1020 of FIG. 10. Duplicate explanations are omitted.

[0369] The electronic device (100) can determine whether the electronic device (100) is located in the fourth region (r4) (S2005).

[0370] When the electronic device (100) is located in the fourth region (r4) (S2005-Y), the electronic device (100) can determine the fourth position (P4) as the first projection position (S2011). The electronic device (100) can obtain the first prediction time by considering the first projection position (S2012).

[0371] When the electronic device (100) is located in the fourth region (r4) (S2005-Y), the electronic device (100) can obtain the ninth position (P9) based on the first position (P1) (S2013-1).

[0372] The electronic device (100) can determine the ninth position (P9) as the second projection position in a general manner (S2013-2).

[0373] The electronic device (100) can obtain a second prediction time by considering the second projection position (S2014).

[0374] The electronic device (100) can obtain a first prediction time and a second prediction time. The electronic device (100) can compare the first prediction time and the second prediction time (S2020). The operation of comparing the prediction times is described in FIG. 15. The description described in FIG. 15 can also be applied when the electronic device (100) is located in the fourth region (r4) as well as the second region (r2).

[0375] The electronic device (100) can perform a brightness value comparison operation in the embodiment of FIG. 15 (S1540).

[0376] When the electronic device (100) is located in the second region (r2) or the third region (r3), the brightness value comparison operation is described in FIG. 16.

[0377] When the electronic device (100) is located in the fourth region (r4), the brightness value comparison operation is described in FIGS. 21 and 22.

[0378] FIG. 21 is a drawing for explaining an operation of changing a second projection position when an electronic device (100) is located in a fourth region (r4), according to one embodiment.

[0379] Referring to the embodiment (2100) of FIG. 21, the electronic device (100) can change the second projection position from the ninth position (P9) to the tenth position (P10).

[0380] The electronic device (100) can change the second projection position based on the results of the comparison operation. In FIG. 14, the operation of changing the second projection position included an operation of changing the position to a position further away from the projection surface (10). In FIG. 21, the operation of changing the second projection position may include an operation of changing the position to a position closer to the projection surface (10).

[0381] The limit point for the change operation may be the fifth position (P5). If the change is made to a position closer to the projection surface (10) than the fifth position (P5), the output size of the projection image becomes smaller than the minimum size, so the second projection position can only be changed up to the fifth position (P5). The change unit may be a preset unit. For example, the change unit may be 1 cm, 10 cm, etc.

[0382] The electronic device (100) can compare a first brightness value of a projection image to be output in an ultra-short focus manner at a first projection position with a second brightness value of a projection image to be output in a normal manner at a second projection position. The electronic device (100) can change the second projection position based on the comparison result.

[0383] FIG. 22 is a drawing for explaining an operation of comparing brightness values ​​when an electronic device (100) is located in a fourth region (r4), according to one embodiment.

[0384] Steps S2241, S2242, S2243, S2244, S2263, and S2264 of FIG. 22 may correspond to steps S1641, S1642, S1643, S1644, S1663, and S1664 of FIG. 16. Duplicate explanations are omitted.

[0385] In Fig. 16, if the brightness difference value is greater than or equal to the threshold brightness value, an operation of moving to the first projection position and outputting a projection image in an ultra-short focus manner is described.

[0386] In FIG. 21, if the brightness difference value is greater than or equal to the threshold brightness value (S2244-Y), the electronic device (100) can change the second projection position (S2245). The electronic device (100) can change the second projection position so that the second projection position is closer to the projection surface (10). The limit point may be the fifth position (P5). The electronic device (100) can change the second projection position so that it is closer to the projection surface (10), but cannot change it closer than the fifth position (P5).

[0387] According to various embodiments, if the second projection position is already identified as being at the limit point, the electronic device (100) can move the first projection position without changing the second projection position any further and output the projection image to the projection surface (10) in an ultra-short focus manner.

[0388] When the second projection position is changed, the electronic device (100) can change the second screen size based on the changed second projection position (S2246). When the projection image is output at the changed second projection position, the electronic device (100) can determine the screen size of the projection image to be output on the projection surface (10) as the second screen size.

[0389] The electronic device (100) can compare the first screen size with the changed second screen size (S2247). The comparison operation between the first screen size and the changed second screen size may correspond to steps S1534, S1535, S1536, and S1540 of FIG. 15. Duplicate descriptions are omitted. When the brightness value comparison operation described in FIG. 15 is re-performed, the embodiment of FIG. 21 may be applied again.

[0390] FIG. 23 is a drawing for explaining a situation in which an electronic device (100) is located in a fifth region (r5), according to one embodiment.

[0391] Referring to an embodiment (2300) of FIG. 23, the electronic device (100) can obtain a first position (P1) indicating the current position of the electronic device (100). The electronic device (100) can determine whether the x-axis value of the first position (P1) is included in the fifth region (r5). If the electronic device (100) is located in the fifth region (r5), the electronic device (100) can determine the fourth position (P4) as the first projection position and the sixth position (P6) as the second projection position.

[0392] The electronic device (100) can perform a comparison operation based on the first projection position and the second projection position. As a result of the comparison operation, the electronic device (100) can determine whether to output the projection image in an ultra-short focus manner or in a normal manner.

[0393] FIG. 24 is a diagram for explaining an operation of obtaining a prediction time when an electronic device (100) is located in a fifth region (r5), according to one embodiment.

[0394] Steps S2412, S2414, and S2420 of FIG. 24 may correspond to steps S1012, S1014, and S1020 of FIG. 10. Duplicate explanations are omitted.

[0395] The electronic device (100) can determine whether the electronic device (100) is located in the fifth region (r5) (S2405).

[0396] When the electronic device (100) is located in the fifth region (r5) (S1005-Y), the electronic device (100) can determine the fourth position (P4) as the first projection position of the ultra-short focus method (S2411). The electronic device (100) can obtain the first prediction time by considering the first movement time and transition time from the current position to the first projection position (S2412).

[0397] When the electronic device (100) is located in the fifth region (r5) (S1005-Y), the electronic device (100) can determine the sixth position (P6) as the second projection position in the general manner (S2413). The electronic device (100) can obtain the second prediction time by considering the second movement time and transition time from the current position to the second projection position (S2414).

[0398] The electronic device (100) can obtain a first prediction time and a second prediction time. The electronic device (100) can compare the first prediction time and the second prediction time (S2420). The operation of comparing the first prediction time and the second prediction time is described in FIGS. 25 and 26.

[0399] FIG. 25 is a drawing for explaining an operation of changing a second projection position when an electronic device (100) is located in a fifth region (r5), according to one embodiment.

[0400] Referring to the embodiment (2500) of FIG. 25, the electronic device (100) can change the second projection position from the sixth position (P6) to the eleventh position (P11).

[0401] The electronic device (100) can change the second projection position based on the results of the comparison operation. In FIG. 14, the operation of changing the second projection position included an operation of changing the position to a position further away from the projection surface (10). In FIG. 25, the operation of changing the second projection position may include an operation of changing the position to a position closer to the projection surface (10).

[0402] The limit point for the change operation may be the fifth position (P5). If the change is made to a position closer to the projection surface (10) than the fifth position (P5), the output size of the projection image becomes smaller than the minimum size, so the second projection position can only be changed up to the fifth position (P5). The change unit may be a preset unit. For example, the change unit may be 1 cm, 10 cm, etc.

[0403] The electronic device (100) can compare a first brightness value of a projection image to be output in an ultra-short focus manner at a first projection position with a second brightness value of a projection image to be output in a normal manner at a second projection position. The electronic device (100) can change the second projection position based on the comparison result.

[0404] FIG. 26 is a drawing for explaining an operation of comparing brightness values ​​when an electronic device (100) is located in a fifth region (r5), according to one embodiment.

[0405] Steps S2621, S2641, S2642, S2643, S2644, S2661, S2662, S2663, and S2664 of FIG. 26 may correspond to steps S1121, S1141, S1142, S1143, S1144, S1161, S1162, S1163, and S1164 of FIG. 11. Duplicate explanations are omitted.

[0406] In Fig. 11, if the brightness difference value is greater than or equal to the threshold brightness value, an operation of moving to the first projection position and outputting a projection image in an ultra-short focus manner is described.

[0407] In FIG. 26, if the brightness difference value is greater than or equal to the threshold brightness value (S2644-Y), the electronic device (100) can change the second projection position (S2645). The electronic device (100) can change the second projection position so that the second projection position becomes closer to the projection surface (10). The limit point may be the fifth position (P5). The electronic device (100) can change the second projection position so that it becomes closer to the projection surface (10), but cannot change it closer than the fifth position (P5).

[0408] According to various embodiments, if the second projection position is already identified as being at the limit point, the electronic device (100) can move the first projection position without changing the second projection position any further and output the projection image to the projection surface (10) in an ultra-short focus manner.

[0409] When the second projection position is changed, the electronic device (100) can change the second screen size based on the changed second projection position (S2646). When the projection image is output at the changed second projection position, the electronic device (100) can determine the screen size of the projection image to be output on the projection surface (10) as the second screen size.

[0410] The electronic device (100) can compare the first screen size with the changed second screen size (S2647). The comparison operation between the first screen size and the changed second screen size may correspond to steps S1534, S1535, S1536, and S1540 of FIG. 15. Duplicate descriptions are omitted. When the brightness value comparison operation described in FIG. 15 is re-performed, the embodiment of FIG. 26 may be applied again.

[0411] FIG. 27 is a drawing for explaining a plurality of modules included in an electronic device (100), according to one embodiment.

[0412] Referring to FIG. 27, the electronic device (100) may include at least one of an image sensor (2701), a user command input module (2702), a map information storage module (2703), a measurement amount calculation module (2704), a projection surface determination module (2705), a screen size determination module (2706), a prediction time calculation module (2707), a projection method determination module (2708), a processor (111), and a driving unit (120).

[0413] The processor (111) may be connected to at least one of an image sensor (2701), a user command input module (2702), a map information storage module (2703), a measurement amount calculation module (2704), a projection surface determination module (2705), a screen size determination module (2706), a prediction time calculation module (2707), a projection method determination module (2708), and a driving unit (120).

[0414] An image sensor (2701) may be included in the sensor unit (121). The image sensor (2701) may include a sensor for acquiring a photographed image. The image sensor (2701) may include various types of cameras. The electronic device (100) may acquire a photographed image through the image sensor (2701).

[0415] The user command input module (2702) may be a module that acquires and stores user commands. The user command input module (2702) may acquire audio data containing user voice commands via a microphone. The user command input module (2702) may acquire control data (or text data) containing user commands via a network.

[0416] The map information storage module (2703) may include map information related to the space where the electronic device (100) is located. The map information may be described as at least one of spatial information, two-dimensional spatial information, and three-dimensional spatial information. The electronic device (100) may use the map information to determine the driving route or driving method of the electronic device (100).

[0417] The measurement calculation module (2704) may be a module that calculates physical characteristics. The electronic device (100) may use the measurement calculation module (2704) to calculate characteristic information such as location, distance, and angle. The location may include the location of the electronic device (100), the location of the user, the location of the projection surface (10), the first projection location corresponding to the ultra-short focus method, the projection location corresponding to the second projection location, other locations (the first location (P1) to the eleventh location (P11)), etc.

[0418] The projection plane determination module (2705) may be a module that determines a projection plane (10) for outputting a projection image. The projection plane determination module (2705) may determine at least one projection plane. If multiple projection planes exist, the projection plane determination module (2705) may determine candidate projection planes and determine one final projection plane based on the analysis results.

[0419] The screen size determination module (2706) can determine (or predict) the size of the projection image to be output on the projection surface. The screen size determination module (2706) can determine the screen size on which the projection image is output on the projection surface (10) based on a preset projection ratio according to the projection method (or projection lens), the projection distance to the projection surface (10), etc.

[0420] The prediction time calculation module (2707) can calculate the time required to move from the current location to the projection location. The prediction time calculation module (2707) can calculate the movement time by considering the preset movement speed of the electronic device (100), the current location, the projection location (or target location), etc.

[0421] The projection method determination module (2708) may be a module that determines one of the multiple projection methods that the electronic device (100) may provide. The projection method determination module (2708) may determine one of the multiple projection methods by performing a comparison operation.

[0422] Once the projection method is determined, the electronic device (100) can control the operation of the electronic device (100) through the driving unit (120). For example, the electronic device (100) can move the electronic device (100) to the projection position through the driving unit (120).

[0423] The electronic device (100) can control each component (sensor, module, driving unit, etc.) disclosed in FIG. 27 using the processor (111).

[0424] FIG. 28 is a drawing for explaining an operation of changing a second projection position according to one embodiment.

[0425] Referring to FIG. 28, the electronic device (100) can obtain a projection command (S2805). The electronic device (100) can determine a minimum screen size corresponding to the projection command (S2810). The electronic device (100) can determine a projection surface based on the minimum screen size (S2815).

[0426] The electronic device (100) can calculate a first prediction time corresponding to the ultra-short focus method and a second prediction time corresponding to the general method based on the projection surface.

[0427] The electronic device (100) can determine a first projection position at which to output a projection image in an ultra-short focus manner from the current position. The electronic device (100) can calculate a first prediction time by considering a first movement time and a transition time required from the current position to the first projection position.

[0428] The electronic device (100) can determine a second projection position at which to output a projection image in a general manner from the current position. The electronic device (100) can calculate a second prediction time by considering the second movement time and transition time required from the current position to the second projection position.

[0429] The electronic device (100) can determine whether the first prediction time is less than or equal to the second prediction time (S2820). If the first prediction time is less than or equal to the second prediction time (S2820-Y), the electronic device (100) can output a projection image based on an ultra-short focus method (S2825). The electronic device (100) can move to the first projection position and output the projection image to the projection surface (10) from the first projection position using the ultra-short focus method.

[0430] If the first prediction time is not less than or equal to the second prediction time (S2820-N), the electronic device (100) can perform a screen size comparison operation.

[0431] The electronic device (100) can obtain a first screen size to be output on the projection surface (10) when outputting a projection image in an ultra-short focus manner at a first projection position, and a second screen size to be output on the projection surface (10) when outputting a projection image in a normal manner at a second projection position.

[0432] The electronic device (100) can obtain a size difference value between the first screen size and the second screen size. The electronic device (100) can determine whether the size difference value is greater than or equal to a threshold size value (S2830).

[0433] If the size difference value is greater than or equal to the threshold size value (S2830-Y), the electronic device (100) can change the second projection position away from the projection surface (10) (S2835). The electronic device (100) can repeat step S2820.

[0434] If the size difference value is not greater than the threshold size value (S2830-N), the electronic device (100) can perform a brightness value comparison operation.

[0435] The electronic device (100) can obtain a first brightness value to be output on the projection surface (10) when outputting a projection image in an ultra-short focus manner at a first projection position, and a second brightness value to be output on the projection surface (10) when outputting a projection image in a normal manner at a second projection position.

[0436] The electronic device (100) can obtain a brightness difference value between a first brightness value and a second brightness value. The electronic device (100) can determine whether the brightness difference value is greater than or equal to a threshold brightness value (S2840).

[0437] If the brightness difference value is greater than or equal to the threshold brightness value (S2840-Y), the electronic device (100) can change the second projection position to be closer to the projection surface (10) (S2845). The electronic device (100) can repeat step S2830.

[0438] If the brightness difference value is not greater than the threshold brightness value (S2840-N), the electronic device (100) can output the projection image based on the general method (S2850).

[0439] FIG. 29 is a drawing for explaining an operation of identifying an obstacle object according to one embodiment.

[0440] Referring to FIG. 29, the electronic device (100) can determine one projection method among multiple projection methods. The multiple projection methods may include at least one of an ultra-short focus method or a general method. The determined method is described as a first method. The projection position corresponding to the determined method is described as a first coordinate. A method other than the determined method is described as a second method. The injection position of a method other than the determined method is described as a second coordinate. The coordinates may be described as a location or location information.

[0441] The electronic device (100) can move to the first coordinate corresponding to the determined first method (S2905). The electronic device (100) can determine whether an obstacle object is identified during or after movement (S2910). The obstacle object may represent an obstacle that is determined to make it difficult to output a projection image to the projection surface (10). If an obstacle object is identified, it can be determined that it is difficult to output a projection image using the determined first method.

[0442] The electronic device (100) can determine whether to output the projection image at the second coordinate using a method other than the existing method (the second method) or to output the projection image on a different projection surface while maintaining the existing method (the first method). Information related to the second method (the second coordinate) may be information already acquired in the step of determining the initial projection method.

[0443] When an obstacle object is identified (S2910-Y), the electronic device (100) can determine whether to change the projection position. The electronic device (100) can obtain a third predicted time of the second method by adding up the third movement time and transition time required from the current position to the second coordinate corresponding to the second method (a method other than the determined method) (S2915).

[0444] The electronic device (100) may determine a second projection surface (S2920). For example, the electronic device (100) may determine a second projection surface other than the previously determined first projection surface. Once a new second projection surface is determined, the projection position may be determined based on the position of the second projection surface. The second projection surface may be a candidate projection surface.

[0445] The electronic device (100) can determine a third coordinate corresponding to the position of the second projection surface (S2925). The fourth predicted time of the first method can be obtained by adding the fourth movement time and transition time required from the current position to the third coordinate (S2930).

[0446] The electronic device (100) can determine whether the third prediction time is less than or equal to the fourth prediction time (S2935). If the third prediction time is less than or equal to the fourth prediction time (S2935-Y), the electronic device (100) can output the projection image to the first projection surface (existing projection surface) in the second manner at the second coordinate (S2940).

[0447] If the third prediction time is not less than or equal to the fourth prediction time (S2935-N), the electronic device (100) can perform a size comparison operation.

[0448] When the electronic device (100) outputs a projection image in a second manner at a second coordinate, the electronic device (100) can obtain a third screen size of the projection image to be output on the projection surface (10). When the electronic device (100) outputs a projection image in a first manner at a third coordinate, the electronic device (100) can obtain a fourth screen size of the projection image to be output on the projection surface (10). The electronic device (100) can obtain a size difference value between the third screen size and the fourth screen size.

[0449] The electronic device (100) can determine whether the size difference value is greater than or equal to a threshold size value (S2945). If the size difference value is greater than or equal to the threshold size value (S2945-Y), the electronic device (100) can repeat steps S2920, S2925, S2930, S29365, S2940, and S2945.

[0450] If the size difference value is not greater than the threshold size value (S2945-N), the electronic device (100) can output the projection image to the second projection surface in the first manner at the third coordinate (S2950).

[0451] If the projection image cannot be output to the first projection surface in the first manner due to an obstacle object, the electronic device (100) can select whether to output the projection image to the first projection surface in the second manner or to output the projection image to the second projection surface in the first manner.

[0452] FIG. 30 is a drawing for explaining an operation of changing a moving position according to one embodiment.

[0453] Referring to FIG. 30, the electronic device (100) can acquire a user voice command (S3005). The electronic device (100) can predict the location where the user voice command was uttered. The electronic device (100) can move to the predicted location.

[0454] The electronic device (100) can determine (or predict) a first movement location based on a user voice command (S3010). The electronic device (100) can move to the first movement location (S3015).

[0455] The electronic device (100) can analyze (or acquire) map information corresponding to the first movement location (S3020). Based on the map information, the electronic device (100) can acquire feature information related to the first movement location. The feature information can include information related to a projection surface that is likely to output a projection image.

[0456] After the electronic device (100) moves to the first movement position, the electronic device (100) can acquire a captured image through the image sensor. The electronic device (100) can identify the user's location through the captured image (S3025). The electronic device (100) can determine the second movement position based on the first movement position and the user's location (S3030). There may be an error between the first movement position and the position where the actual user utters the voice command. The electronic device (100) can determine the user's location through the image sensor for accuracy.

[0457] The electronic device (100) can determine a second movement location by comprehensively considering the first movement location and the user location. The electronic device (100) can move to the second movement location (S3035).

[0458] FIG. 31 is a drawing for explaining an operation of determining a projection position by considering a user's activity radius according to one embodiment.

[0459] According to an embodiment (3100) of FIG. 31, the electronic device (100) can identify a location (3101) corresponding to the user (30). The electronic device (100) can move to the location (3101) corresponding to the user (30). The electronic device (100) can determine a projection surface based on the location (3101) corresponding to the user (30). The location (3101) corresponding to the user (30) can include a location that is a threshold distance away from the location of the user (30).

[0460] The electronic device (100) can identify a first radius area (3110) based on a location (3101) corresponding to the user (30). The first radius area (3110) can include an area corresponding to a preset radius based on the location (3101) corresponding to the user (30). The electronic device (100) can determine a projection surface using the first radius area (3110).

[0461] If the projection surface is not identified based on the first radius area (3110), the electronic device (100) can identify a second radius area (3120) having a radius greater than the preset radius of the first radius area (3110). The electronic device (100) can determine the projection surface based on the second radius area (3120) having a radius greater than the first radius area (3110).

[0462] For example, the electronic device (100) can identify candidate projection surfaces (10-2, 10-3) based on the second radius area (3120). The electronic device (100) can determine one of the candidate projection surfaces (10-2, 10-3) as the final projection surface.

[0463] When the final projection surface is determined to be the projection surface (10-2), the electronic device (100) can identify a projection position (3102) corresponding to the projection surface (10-2). The electronic device (100) can move to the projection position (3102) and output a projection image to the projection surface (10-2).

[0464] When the final projection surface is determined to be the projection surface (10-3), the electronic device (100) can identify a projection position (3103) corresponding to the projection surface (10-3). The electronic device (100) can move to the projection position (3103) and output a projection image to the projection surface (10-3).

[0465] The electronic device (100) can determine a projection surface that can output a projection image more quickly among multiple candidate projection surfaces as the final projection surface.

[0466] According to various embodiments, the electronic device (100) can determine whether a projection surface to output a projection image in an ultra-short focus manner exists based on a location (3101) corresponding to the user (30). If a projection surface to output a projection image in an ultra-short focus manner does not exist, the electronic device (100) can identify a projection surface to output a projection image in a general manner. If a projection surface to output a projection image in an ultra-short focus manner does not exist, the electronic device (100) can move to a location (3101) corresponding to the user (30) and then identify a candidate projection surface.

[0467] FIG. 32 is a drawing for explaining an operation of determining a movement position by considering a projection environment according to one embodiment.

[0468] Example 3210 of Fig. 32 shows a situation in which a projection surface is determined in a space with many projectable surfaces on a wall and no obstacles.

[0469] The electronic device (100) can determine a location (3211) with many candidate projection surfaces for outputting a projection image by considering the location of the candidate projection surface, and move to the determined location (3211). The electronic device (100) can determine the projection surface after moving to the determined location (3211).

[0470] Example 32 (3220) of FIG. 32 illustrates a situation in which a projection surface is determined in a space with few projectable surfaces on the wall and many obstacles.

[0471] If the number of candidate projection surfaces is less than the critical number, the electronic device (100) can determine the center position (3221) of the space and move to the determined position (3221). After moving to the determined position (3221), the electronic device (100) can determine the projection surface.

[0472] The candidate projection surface can represent a projection surface that can output a projection image while avoiding obstacles.

[0473] FIG. 33 is a drawing for explaining a mobile projector according to one embodiment.

[0474] The electronic device (100) may be implemented as a mobile device. The electronic device (100) may be implemented as a mobile projector or a mobile image output device.

[0475] The electronic device (100) may include a movable member (122). The movable member (122) may refer to a member for moving from a first position to a second position in a space where the electronic device (100) is placed. The movable member (122) may include at least one wheel (e.g., a circular wheel). The electronic device (100) may move to a target position (or goal position) through the movable member (122).

[0476] Referring to the embodiment (3310) of FIG. 33, the electronic device (100) can be moved by a force applied by a user. When the user pushes the electronic device (100), the movable member (122) of the electronic device (100) can be rotated. The movable member (122) can include a wheel, and the electronic device (100) can be moved by the movable member (122) being rotated by an external force.

[0477] Referring to the embodiment (3320) of FIG. 33, the movable member (122) can be moved via a fixed member (3321). The fixed member (3321) can include a movable rail. An electronic device (100) can be placed on the movable rail. The electronic device (100) can move on the movable rail. The movable rail is not a component included in the electronic device (100), but can be a component installed by a user.

[0478] The electronic device (100) can control the moving member (122) to move the electronic device (100) by using the force generated from the driving unit (120). The electronic device (100) can generate the force to be transmitted to the moving member (122) by using the motor included in the driving unit (120).

[0479] When a user input or control command is received, the electronic device (100) can rotate the moving member (122) by transmitting a force generated through a motor to the moving member (122). The electronic device (100) can control the moving member (122) to adjust the rotation speed, rotation direction, etc. The electronic device (100) can perform a movement action (or movement function) by controlling the moving member (122) based on a target position or a moving direction, etc.

[0480] The electronic device (100) can drive based on at least one of a preset movement speed or a preset acceleration. The preset movement speed or the preset acceleration can be changed according to a user's settings.

[0481] According to various embodiments, the electronic device (100) may control speed or acceleration based on a preset event. The electronic device (100) may identify whether the preset event has occurred. The electronic device (100) may acquire at least one of driving data (or map data) or sensing data to identify whether the preset event has occurred.

[0482] When a preset event is identified as occurring, the electronic device (100) may drive by changing the speed or acceleration. The preset event may include at least one of an event for driving to a target location or an event for identifying a preset object.

[0483] An event for driving to a target location may include at least one of an event for starting driving from the current location or an event for stopping driving at the target location. When a control command (or user input) for driving from the current location to the target location is obtained, the electronic device (100) may increase at least one of the speed or acceleration. If it is determined that the electronic device (100) has reached a threshold distance from the target location, the electronic device (100) may decrease at least one of the speed or acceleration.

[0484] The preset object may include an obstacle object. If an obstacle object is identified, the electronic device (100) may reduce acceleration. The acceleration may increase in the opposite direction of the direction of travel. If the acceleration is reduced, the speed increase of the electronic device (100) may decrease, and if the acceleration is in the opposite direction of the direction of travel, the speed may decrease.

[0485] According to various embodiments, the electronic device (100) can move over the fixed member (3321) by force transmitted through the driving unit (120). The electronic device (100) can automatically move the fixed member (3321) by using force generated from the driving unit (120) rather than an external force. The automatic movement operation can be described as a sliding operation.

[0486] According to various embodiments, the electronic device (100) may move to an identified target location based on a user input. The target location may include a target location to which the electronic device (100) is to move. The user may input a command to the electronic device (100) to move to the target location. The electronic device (100) may receive a user input for moving to the target location.

[0487] For example, the user input may include information on the location where the electronic device (100) is to move. The electronic device (100) may determine the location information included in the user input as a target location and move to the target location.

[0488] For example, the user input may include location information of the projection surface (10) on which the electronic device (100) outputs the projection image. The electronic device (100) may determine a target location at which the electronic device (100) outputs the projection image based on the location information of the projection surface (10) included in the user input. The electronic device (100) may move to the determined target location.

[0489] A user input including a target location can be received (or acquired) through an external device connected to the electronic device (100).

[0490] For example, the external device may include a remote control device capable of communicating with the electronic device (100).

[0491] For example, the external device may include a user terminal device capable of communicating with the electronic device (100).

[0492] The electronic device (100) can identify a target location through a sensor unit (121). The sensor unit (121) can obtain sensing data about the surroundings of the electronic device (100). The electronic device (100) can identify the target location based on the sensing data.

[0493] For example, the electronic device (100) can identify a laser light pointing at a target location by a user from sensing data. When a user points the laser light at a target location using a laser or the like, the electronic device (100) can sense the position of the laser light to identify the target location.

[0494] For example, the electronic device (100) can identify a user gesture indicating a target location from a sensing data. When the user points to the target location with a finger (or an object indicating a pointing direction), the electronic device (100) can sense the user's gesture and identify the target location.

[0495] An electronic device (100) may include a projection unit (112). The electronic device (100) may control the projection unit (112) to output a projected image.

[0496] According to various embodiments, the electronic device (100) may include a projection unit (112) utilizing an ultra-short throw (UST) method. The ultra-short throw method may refer to a method of projecting an image at a relatively close distance (e.g., less than 1 m). Despite the close distance, a clear projected image can be output to the projection surface (10).

[0497] According to various embodiments, the electronic device (100) may include a projection unit (112) using a general method. The projection unit (112) may include various types of light sources. For example, the projection unit (112) may include at least one light source among a lamp, an LED, and a laser. The general method may include a method of outputting a projection image at a distance exceeding 1 m.

[0498] According to various embodiments, the electronic device (100) can output a projection image using both the ultra-short focus method and the normal method at the same projection position. The electronic device (100) can output a projection image using both the ultra-short focus method and the normal method at the same point in time.

[0499] The electronic device (100) can distinguish a first area and a second area among the entire projection area for projecting a projection image. The electronic device (100) can output a projection image to the first area using an ultra-short focus method, and output a projection image to the second area using a general method.

[0500] For example, the projection image output to the first area and the projection image output to the second area may be sub-images generated based on the same projection image (source image).

[0501] For example, the projection image output to the first area and the projection image output to the second area may be different projection images.

[0502] For example, the electronic device (100) can output a projection image using a short focus method in a first area and a normal method in a second area using the same light source.

[0503] For example, the electronic device (100) can output a projection image using a short focus method in a first area and a normal method in a second area by using different light sources. The electronic device (100) can output a projection image using a short focus method in a first area through a first light source output from a first light source unit, and can output a projection image using a normal method in a second area through a second light source output from a second light source unit.

[0504] FIG. 34 is a drawing for explaining the distance between a projection surface (10) and an electronic device (100), according to one embodiment.

[0505] Referring to FIG. 34, the electronic device (100) can determine the projection method based on the distance between the electronic device (100) and the projection surface (10).

[0506] The projection method may include at least one of an ultra-short throw (UST) method or a normal method. The ultra-short throw method may be described as the first method, and the normal method may be described as the second method. The electronic device (100) may acquire (or calculate) the distance between the position of the electronic device (100) and the position of the projection surface (10), and determine the projection method based on the acquired distance.

[0507] If the distance between the electronic device (100) and the projection surface (10) is less than or equal to a critical distance, the electronic device (100) can output a projection image using an ultra-short focus method. If the distance between the electronic device (100) and the projection surface (10) exceeds the critical distance, the electronic device (100) can output a projection image using a general method.

[0508] Referring to Example (3410), a situation is shown where the distance between the electronic device (100) and the projection surface (10) is less than or equal to a critical distance (d1). The electronic device (100) can output a projection image using an ultra-short focus method.

[0509] Referring to Example (3420), a situation is shown where the distance between the electronic device (100) and the projection surface (10) exceeds the critical distance (d1). The electronic device (100) can output a projection image using a general method.

[0510] The critical distance (d1) may be described as a first critical distance. If the distance between the electronic device (100) and the projection surface (10) exceeds the second critical distance (d2), the electronic device (100) may control the distance between the electronic device (100) and the projection surface (10) to be within the second critical distance (d2). The electronic device (100) may determine a target position at which the distance between the electronic device (100) and the projection surface (10) is within the second critical distance (d2), and may move to the target position. After moving, the electronic device (100) may output a projection image.

[0511] According to various embodiments, the electronic device (100) may include a plurality of lenses.

[0512] The electronic device (100) may include a first lens corresponding to a short-focus method. The electronic device (100) may include a second lens corresponding to a general method. The refractive indices of the first lens and the second lens may be different.

[0513] The electronic device (100) can determine a projection method using the projection environment (or surrounding environment). The electronic device (100) can determine a lens corresponding to the determined method. The electronic device (100) can output a projection image through the determined lens.

[0514] According to various embodiments, the electronic device (100) may include an integrated lens (or first lens). Based on the integrated lens, the electronic device (100) may output a projection image in an ultra-short throw (UST) manner and a conventional manner. The electronic device (100) may implement various projection methods with a single lens.

[0515] FIG. 35 is a drawing for explaining a moving operation of an electronic device (100) according to one embodiment.

[0516] Referring to embodiment (3510) of FIG. 35, the electronic device (100) can move based on a projection position. The electronic device (100) can obtain a projection position for moving the electronic device (100).

[0517] According to various embodiments, the electronic device (100) can move based on the projection position without outputting a projected image. Once the projection position is identified (or acquired), the electronic device (100) can determine whether a projected image is being output. If the projected image is not being output, the electronic device (100) can move based on the projection position.

[0518] If a projection image is being output, the electronic device (100) can stop the projection operation of the projection image. After stopping the output of the projection image, the electronic device (100) can move based on the projection position.

[0519] FIG. 36 is a diagram for explaining a notification for a location movement according to one embodiment.

[0520] Referring to the embodiment (3610) of FIG. 36, when a moving event is identified based on the projection position, the electronic device (100) can output a movement notification screen (3611).

[0521] The movement notification screen (3611) may include at least one of a UI (3611-1) requesting user input for movement of the location of the electronic device (100) or a UI (3611-2) for setting whether to display the movement notification screen.

[0522] When a user input including a movement command is received through the UI (3611-1), the electronic device (100) can move based on the projection position.

[0523] When a user input is received to set the device to move without a movement notification screen through the UI (3611-2), the electronic device (100) may no longer display the movement notification screen (3611). When the electronic device (100) moves after the user input is received, the electronic device (100) may not display the movement notification screen (3611).

[0524] FIG. 37 is a drawing for explaining a keystone correction function according to one embodiment.

[0525] Referring to embodiment (3710) of FIG. 37, when the inclination of the electronic device (100) changes due to positional movement, the electronic device (100) may perform a keystone correction function. The keystone correction function may include an operation of correcting a trapezoidal image into a rectangular image.

[0526] The electronic device (100) can output a projection image in a state where a vertical inclination exists.

[0527] Referring to embodiment (3720), the electronic device (100) can output a projection image (3721) in a state where a vertical inclination exists, and due to the vertical inclination, the projection image (3721) can be output in a trapezoidal shape rather than a rectangular shape, which is the original image shape. In order to solve a problem caused by the presence of a horizontal inclination, the electronic device (100) can perform a keystone function.

[0528] Referring to embodiment (3730), the electronic device (100) can perform a keystone function to transform the original image so that the final output projection image (3731) becomes rectangular in shape.

[0529] FIG. 38 is a drawing for explaining a keystone correction function according to one embodiment.

[0530] Referring to the embodiment (3810) of FIG. 38, when the inclination of the electronic device (100) changes according to the position movement, the electronic device (100) can perform a keystone correction function.

[0531] The electronic device (100) can output a projection image in a state where a horizontal inclination exists.

[0532] Referring to embodiment (3820), the electronic device (100) can output a projection image (3821) in a state where a horizontal inclination exists, and due to the horizontal inclination, the projection image (3821) can be output in a trapezoidal shape rather than a rectangular shape, which is the original image shape. To solve a problem caused by the presence of the horizontal inclination, the electronic device (100) can perform a keystone function.

[0533] Referring to embodiment (3830), the electronic device (100) can perform a keystone function to transform the original image so that the final output projection image (3831) becomes rectangular in shape.

[0534] According to various embodiments, the electronic device (100) can perform keystone correction at various points in time. It is assumed that the electronic device (100) is located at a first location (current location). It is assumed that the electronic device (100) moves to a second location (projection location) and outputs a projected image. 338

[0535] For example, the electronic device (100) can perform keystone correction at a first location. After completing the keystone correction at the first location, the electronic device (100) can move to a second location. The electronic device (100) can output a projection image on which keystone correction has been performed at the second location.

[0536] For example, the electronic device (100) can perform keystone correction while moving from a first position to a second position. The electronic device (100) can output a projection image on which keystone correction has been performed at the second position.

[0537] For example, the electronic device (100) can perform keystone correction at a second location. The electronic device (100) can output a projection image on which keystone correction has been performed at the second location.

[0538] According to various embodiments, the electronic device (100) can output a projection image while moving. To output a projection image while moving, the electronic device (100) can perform keystone correction in real time while moving. The electronic device (100) can perform keystone correction based on each position while moving from a first position to a second position. The electronic device (100) can output a projection image for which keystone correction has been performed in real time at each position while moving. The keystone correction can be performed gradually at each position.

[0539] FIG. 39 is a drawing for explaining an operation of changing a projection area according to one embodiment.

[0540] Referring to the embodiment (3910) of FIG. 39, when the size of a projection image changes, the electronic device (100) can newly identify a projection surface corresponding to the changed size. The electronic device (100) can determine a projection surface corresponding to the size of the projection image. It is assumed that there are multiple candidate projection surfaces in the space where the electronic device (100) is placed. The electronic device (100) can output the projection image to the first projection surface (3911) among the multiple candidate projection surfaces. Changing the size of the projection image may include an operation of changing the resolution of the projection image or an operation of changing the aspect ratio of the projection image.

[0541] When the size of the projection image increases, the electronic device (100) can determine whether the increased size of the projection image can be projected on the first projection surface (3911). The electronic device (100) can compare the size of the projection image with the size of the first projection surface (3911). If the size of the projection image is larger than the size of the first projection surface (3911), the electronic device (100) can determine to change the projection surface. The electronic device (100) can determine a second projection surface (3912) having a size larger than the size of the projection image among a plurality of candidate projection surfaces. The electronic device (100) can output the projection image on the second projection surface (3912).

[0542] According to various embodiments, the electronic device (100) may determine whether to move based on attribute information of content including a projected image. The attribute information of the content may include at least one of information on the ratio of high-frequency components included in the content and information on whether an edge object is included.

[0543] If the proportion of high-frequency components among the multiple components included in the content is greater than or equal to a critical ratio, the electronic device (100) can move toward the projection surface (10).

[0544] When the content includes an edge object, the electronic device (100) can move toward the projection surface (10).

[0545] When the electronic device (100) is moved toward the projection surface (10), the projection image may become clearer. The clarity of the projection image may indicate that the quality of the projection image is relatively high.

[0546] FIG. 40 is a drawing for explaining an operation of outputting a projection image using a plurality of devices according to one embodiment.

[0547] Referring to embodiment (4010) of FIG. 40, according to various embodiments, a projection image (4011) may be output to a projection surface (10) by a plurality of electronic devices including a projection unit. The plurality of electronic devices may include a first electronic device (100-1) and a second electronic device (100-2).

[0548] A first electronic device (100-1) can output a portion (4011-1) of a projection image (4011) to a projection surface (10), and a second electronic device (100-2) can output a portion (4011-2) of the projection image to the projection surface (10). The electronic devices (100) can perform a synchronization operation to synchronize the portion projected by the first electronic device (100-1) and the portion projected by the second electronic device (100-2). The synchronization operation can include an operation for multiple electronic devices to output images (or frames) at the same point in time.

[0549] The electronic device (100) may perform an edge blending function when outputting a projection image to multiple electronic devices. The edge blending function may include an operation in which multiple electronic devices project their respective images to output a single screen.

[0550] When the position of the electronic device (100) changes, the electronic device (100) can re-perform the edge blending function.

[0551] Referring to the embodiment (4020) of FIG. 40, multiple electronic devices can display the same projection image (4021) by overlapping them on the projection surface (10). When different electronic devices (100) output the projection image (4021) in the same area, the brightness can increase. The multiple electronic devices can perform a synchronization operation to synchronize the projection image (4021).

[0552] Figure 41 is a drawing for explaining an operation of changing a projection image according to distance.

[0553] By moving toward the projection surface (10) and reducing the projection area, the size of the projection image (content) can be reduced. When the size of the projection image is reduced, the power consumed in outputting the projection image can be saved.

[0554] Referring to the embodiment (4110) of FIG. 41, the electronic device (100) can output a projection image (4111) at a projection position a first distance away from the projection surface. The projection image (4111) can include a first region (4111-1) and a second region (4111-2). The first region (4111-1) and the second region (4111-2) can include different contents. The electronic device (100) can distinguish a plurality of regions (4111-1, 4111-2) using edge lines in the projection image (4111).

[0555] The electronic device (100) can identify an event that moves the projection position closer to the projection surface while reducing the size of the projected image. The electronic device (100) can identify a target area (4111-2) based on preset criteria among a plurality of areas (4111-1, 4111-2). The target area based on the preset criteria can include at least one of a smaller area and an area selected as the main area by a user setting.

[0556] Referring to the embodiment (4120) of FIG. 41, the electronic device (100) may move closer to the projection surface, but may output only a projection image (4121) corresponding to the target area (4111-2) among the plurality of areas (4111-1, 4111-2). The electronic device (100) may convert the size of the image corresponding to the target area (4111-2) and output a new projection image (4121).

[0557] For example, if the content is music-related, the electronic device (100) may move toward the projection surface (10). When moving toward the projection surface (10), the electronic device (100) may reduce the size of the first projection image when outputting the content, thereby reducing battery consumption. The first projection image related to music content may include a first area representing an image related to music and a second area representing music playback information. When an event for reducing the size of the first projection image is identified, the electronic device (100) may generate a second projection image that includes only the second area, and output the generated second projection image. The second projection image may be smaller in size than the first projection image with respect to the projection surface. The location at which the second projection image is output may be closer to the projection surface than the location at which the first projection image is output.

[0558] The electronic device (100) may include a microphone (118). The electronic device (100) may receive user input through the microphone (118). The user input may include voice input. The electronic device (100) may perform a function corresponding to the user input based on the user input including the user's voice.

[0559] The function corresponding to user input may include a full-screen output (Full View) function. The full-screen output function may be described as a full-screen output state. The electronic device (100) may receive a voice command and perform a function corresponding to the voice command.

[0560] FIG. 42 is a drawing for explaining a control method of an electronic device (100) according to one embodiment.

[0561] Referring to FIG. 42, a control method of an electronic device for controlling a projection unit in an ultra-short focus manner for outputting a projection image with a first projection ratio according to an embodiment or a general manner for outputting a projection image with a second projection ratio smaller than the first projection ratio comprises the steps of: when a projection command is received, obtaining a minimum screen size of a projection image to be output on a projection surface based on the projection command (S4205); determining a position of the projection surface based on the minimum screen size (S4210); obtaining a first projection position corresponding to the ultra-short focus manner based on the position of the projection surface, the minimum screen size, and the first projection ratio (S4215); obtaining a second projection position corresponding to the general manner based on the position of the projection surface, the minimum screen size, and the second projection ratio (S4220); determining one of the ultra-short focus manner or the general manner as a target manner based on the first projection position and the second projection position (S4225); and outputting a projection image on the projection surface according to the target manner (S4230). Includes.

[0562] The step (S3025) of determining the target method may include obtaining a first prediction time by adding up a first movement time and a transition time from the current location of the electronic device to the first projection location, obtaining a second prediction time by adding up a second movement time and a transition time from the current location of the electronic device to the second projection location, and comparing the first prediction time and the second prediction time to determine the target method.

[0563] The transition time may include either a time for switching from a first state controlling the projection unit in an ultra-short focus manner to a second state controlling the projection unit in a normal manner, or a time for switching from the second state to the first state.

[0564] The control method may further include a step of moving to a first projection position and outputting a projection image to a projection surface based on an ultra-short focus method if the first prediction time is less than or equal to the second prediction time.

[0565] The step of determining the target method (S3025) may include obtaining a first screen size of a projection image to be output to the projection surface in an ultra-short focus manner based on a first projection position, a position of the projection surface, and a first projection ratio, obtaining a second screen size of a projection image to be output to the projection surface in a general manner based on a second projection position, a position of the projection surface, and a second projection ratio, and comparing the first screen size and the second screen size to determine the target method.

[0566] The control method may further include a step of obtaining a size difference value between a first screen size and a second screen size, and a step of changing the second projection position further from the projection surface if the size difference value is greater than or equal to a threshold size value.

[0567] The step (S3025) of determining the target method may be performed by obtaining a first brightness value of a projection image to be output on a projection surface in an ultra-short focus manner at a first projection position, obtaining a second brightness value of a projection image to be output on a projection surface in a normal manner at a second projection position, and comparing the first brightness value and the second brightness value to determine the target method.

[0568] The control method may further include a step of obtaining a brightness difference value between a first brightness value and a second brightness value, and a step of changing the second projection position closer to the projection surface if the brightness difference value is greater than or equal to a threshold brightness value.

[0569] The step of obtaining the first projection position (S3015) may obtain the first minimum position of the ultra-short focus method based on the position of the projection surface, the minimum screen size, and the first projection ratio, obtain the first maximum position of the ultra-short focus method based on the position of the projection surface, the size of the projection surface, and the first projection ratio, and obtain the first projection position between the first minimum position and the first maximum position.

[0570] The step of obtaining a second projection position (S3020) may obtain a second minimum position in the ultra-short focus manner based on the position of the projection surface, the minimum screen size, and the second projection ratio, obtain a second maximum position in the general manner based on the position of the projection surface, the size of the projection surface, and the second projection ratio, and obtain a second projection position between the second minimum position and the second maximum position.

[0571] The methods according to the various embodiments of the present disclosure described above can be implemented in the form of applications that can be installed on existing electronic devices.

[0572] The methods according to the various embodiments of the present disclosure described above can be implemented only with a software upgrade or a hardware upgrade for an existing electronic device.

[0573] The various embodiments of the present disclosure described above may also be performed through an embedded server provided in an electronic device, or an external server of at least one of the electronic device and the display device.

[0574] According to an example embodiment of the present disclosure, the various embodiments described above may be implemented as software including instructions stored in a machine-readable storage medium that can be read by a machine (e.g., a computer). The device may include an electronic device according to the disclosed embodiments, which is a device that can call instructions stored in the storage medium and operate according to the called instructions. When the instructions are executed by a processor, the processor may directly or under the control of the processor use other components to perform a function corresponding to the instructions. The instructions may include code generated or executed by a compiler or interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' means that the storage medium does not contain signals and is tangible, but does not distinguish between whether data is stored semi-permanently or temporarily in the storage medium.

[0575] According to one embodiment of the present disclosure, the method according to the various embodiments described above may be provided as included in a computer program product. The computer program product may be traded as a commodity between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read-only memory (CD-ROM)) or online through an application store. In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0576] Each of the components (e.g., modules or programs) according to the various embodiments described above may be composed of a single or multiple entities, and some of the sub-components described above may be omitted, or other sub-components may be further included in various embodiments. Alternatively or additionally, some components (e.g., modules or programs) may be integrated into a single entity, which may perform the same or similar functions as those performed by each of the respective components prior to integration. Operations performed by modules, programs or other components according to various embodiments may be executed sequentially, in parallel, iteratively or heuristically, or at least some operations may be executed in a different order, omitted, or other operations may be added.

[0577] Although the preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above, and various modifications may be made by a person having ordinary skill in the art to which the present disclosure pertains without departing from the gist of the present disclosure as claimed in the claims, and such modifications should not be understood individually from the technical idea of ​​the present disclosure.

Claims

1. In electronic devices, Projection section; memory; and At least one processor for controlling the projection unit to output a projection image in a short-focus manner or a general manner; At least one processor of the above, When a projection command is received, the position of the projection surface is identified based on the minimum screen size of the projection image output on the projection surface, Obtaining the projection position based on the position of the projection surface, the minimum screen size and the projection ratio, An electronic device that controls the projection unit to output the projection image to a projection surface according to either the ultra-short focus method or the general method based on the projection position.

2. In paragraph 1, The above ultra-short focus method is a method of outputting a projection image at the first projection ratio, The above general method is a method of outputting the projection image with a second projection ratio smaller than the first projection ratio, At least one processor of the above, Obtain a first projection position corresponding to the ultra-short focus method based on the position of the projection surface, the minimum screen size, and the first projection ratio, Obtaining a second projection position corresponding to the general method based on the position of the projection surface, the minimum screen size, and the second projection ratio, An electronic device that controls the projection unit to output the projection image to a projection surface according to either the ultra-short focus method or the general method based on the first projection position and the second projection position.

3. In paragraph 2, At least one processor of the above, An electronic device that determines the one method by comparing a first prediction time, which is the sum of a first movement time and a transition time from the current location of the electronic device to the first projection position, with a second prediction time, which is the sum of a second movement time and a transition time from the current location of the electronic device to the second projection position.

4. In paragraph 3, The above transition time is, An electronic device comprising one of a time for switching from a first state in which the projection unit is controlled in the ultra-short focus manner to a second state in which the projection unit is controlled in the normal manner, or a time for switching from the second state to the first state.

5. In paragraph 3, At least one processor of the above, An electronic device that controls the projection unit to move to the first projection position and output the projection image to the projection surface based on the ultra-short focus method if the first prediction time is shorter than or equal to the second prediction time.

6. In paragraph 2, At least one processor of the above, Obtaining a first screen size of the projection image to be output on the projection surface in the ultra-short focus manner based on the first projection position, the position of the projection surface, and the first projection ratio, Obtaining a second screen size of the projection image to be output on the projection surface in the general manner based on the second projection position, the position of the projection surface, and the second projection ratio; An electronic device that determines one method by comparing the first screen size and the second screen size.

7. In paragraph 6, At least one processor of the above, An electronic device that changes the second projection position further from the projection surface if the size difference between the first screen size and the second screen size is greater than or equal to a threshold size value.

8. In paragraph 2, At least one processor of the above, Obtaining a first brightness value of the projection image to be output on the projection surface in the ultra-short focus manner at the first projection position, Obtaining a second brightness value of the projection image to be output on the projection surface in the general manner at the second projection position, An electronic device that determines one method by comparing the first brightness value and the second brightness value.

9. In paragraph 8, At least one processor of the above, An electronic device that changes the second projection position closer to the projection surface when the brightness difference value between the first brightness value and the second brightness value is greater than or equal to a threshold brightness value.

10. In paragraph 2, At least one processor of the above, An electronic device that obtains the first projection position between a first minimum position of the ultra-short focus method based on the position of the projection surface, the minimum screen size, and the first projection ratio, and a first maximum position of the ultra-short focus method based on the position of the projection surface, the size of the projection surface, and the first projection ratio.

11. A method for controlling an electronic device including a projection unit that outputs a projection image in a short-focus manner or a general manner, A step of identifying the position of the projection surface based on the minimum screen size of the projection image output on the projection surface when a projection command is received; A step of obtaining the projection position based on the position of the projection surface, the minimum screen size and the projection ratio; and A control method, comprising: a step of outputting the projection image to a projection surface according to either the ultra-short focus method or the general method based on the projection position.

12. In paragraph 11, The above ultra-short focus method is a method of outputting a projection image at the first projection ratio, The above general method is a method of outputting the projection image with a second projection ratio smaller than the first projection ratio, The step of obtaining the above projection position is: Obtain a first projection position corresponding to the ultra-short focus method based on the position of the projection surface, the minimum screen size, and the first projection ratio, Obtaining a second projection position corresponding to the general method based on the position of the projection surface, the minimum screen size, and the second projection ratio, The step of outputting the above projection image is: A control method for outputting the projection image onto a projection surface according to either the ultra-short focus method or the general method based on the first projection position and the second projection position.

13. In paragraph 12, The above control method is, A control method further comprising the step of determining the one method by comparing a first prediction time obtained by adding a first movement time and a transition time from the current location of the electronic device to the first projection position with a second prediction time obtained by adding a second movement time and a transition time from the current location of the electronic device to the second projection position.

14. In paragraph 13, The above transition time is, A control method comprising one of a time for switching from a first state in which the projection unit is controlled in the ultra-short focus manner to a second state in which the projection unit is controlled in the normal manner, or a time for switching from the second state to the first state.

15. In paragraph 13, The above control method is, A control method further comprising the step of moving to the first projection position and outputting the projection image to the projection surface based on the ultra-short focus method if the first prediction time is shorter than or equal to the second prediction time.

Images