Electronic apparatus and control method therefor

Abstract

This electronic apparatus comprises a memory that stores instructions, at least one processor including processing circuitry, an image output module, a variable polarization film, and an illuminance sensor. When the instructions are executed individually or collectively by the at least one processor, the instructions cause the electronic apparatus to: acquire first timing information for displaying a first test image and a second test image; acquire second timing information for controlling changes in a state of the variable polarization film on the basis of the first timing information; output the first test image and the second test image alternately on the basis of the first timing information through the image output module; alternately change the variable polarization film, on the basis of the second timing information, to a first state for transmitting light directed toward a first direction or to a second state for transmitting light directed toward a second direction; acquire a first illuminance value group including a plurality of illuminance values by means of the illuminance sensor while the first test image or the second test image is being output; and determine whether one among the first timing information and the second timing information is corrected on the basis of the first illuminance value group.

Description

Electronic device and control method thereof

[0001] The present disclosure relates to an electronic device and a method for controlling the same, and more specifically, to an electronic device and a method for controlling the same that outputs an image providing a 3D (three-dimensional) visual effect (hereinafter referred to as a three-dimensional effect) through a variable polarizing film.

[0002] Users can view 3D images by wearing 3D glasses. A 3D image may be an image provided to visually experience a three-dimensional stereoscopic effect. An electronic device may provide 3D images by utilizing binocular parallax to provide a three-dimensional stereoscopic effect to the user.

[0003] Actions utilizing binocular parallax may refer to utilizing the difference in field of view caused by the difference in the physical position of a person's left and right eyes. Left eye images and right eye images may be provided to the user to provide a 3D effect.

[0004] A user may wear passive 3D glasses to ensure that a left-eye image reaches only the user's left eye and a right-eye image reaches only the user's right eye. The 3D glasses may be composed of a left lens part including a first polarizing film to allow only the left-eye image to pass through, and a right lens part including a second polarizing film to allow only the right-eye image to pass through.

[0005] Furthermore, to create two types of polarized images, a total of two electronic devices could be used: one equipped with a first polarizing film (e.g., a display projector, simply a projector) and the other equipped with a second polarizing film (a projector). However, it was difficult to accurately align the images projected from the two electronic devices (projectors) onto a large screen or area into a single image. Additionally, there was a problem where the 3D effect could not be provided properly if the images were not accurately aligned (i.e., the images could be blurry, misaligned, or otherwise defective).

[0006] In this scenario, using a variable polarizing film allows a single electronic device (projector) to output a left-eye image and a right-eye image with polarization in different directions. The electronic device can change the polarization characteristics corresponding to the left-eye image and the polarization characteristics corresponding to the right-eye image.

[0007] However, there is a problem where the 3D effect cannot be provided normally if the timing of alternately outputting the left eye image and the right eye image does not match the timing of changing the polarization characteristics (e.g., not synchronized).

[0008] In this case, there is a problem in that the user wearing 3D glasses feels dizzy, lightheaded, nauseous, or otherwise unwell.

[0009] The present disclosure is designed to improve upon the aforementioned problem, and the purpose of the present disclosure is to provide an electronic device and a control method thereof that output two polarized images and output an internal test image using a single electronic device (e.g., a display projector, simply a projector) to sense ambient illuminance, and automatically perform timing-related corrections based on the sensed illuminance.

[0010] According to one embodiment, the electronic device comprises a memory for storing instructions, at least one processor including processing circuitry, an image output module, a variable polarizing film, and an illuminance sensor. When the instructions are executed individually or collectively by the at least one processor, the electronic device acquires first timing information for displaying a first test image and a second test image, acquires second timing information for controlling a state change of the variable polarizing film based on the first timing information, alternately outputs the first test image and the second test image based on the first timing information through the image output module, alternately changes the variable polarizing film to a first state for transmitting light directed in a first direction or a second state for transmitting light directed in a second direction based on the second timing information, and while the first test image or the second test image is being output, acquires a first illuminance value group including a plurality of illuminance values ​​through the illuminance sensor, and based on the first illuminance value group, the first timing information Alternatively, determine whether to correct one of the above second timing information.

[0011] The first test image above may be a left-eye image for a 3D effect, and the second test image may be a right-eye image for a 3D effect.

[0012] The first test image above includes a background of a first color, and the second test image above may include a background of a second color that is brighter than the first color.

[0013] The first state above is a state for transmitting light directed in a first direction, and the second state above may be a state for transmitting light directed in a second direction different from the first direction.

[0014] The first state above is a state for transmitting x-axis polarization, and the second state above may be a state for transmitting y-axis polarization.

[0015] When the above instructions are executed individually or collectively by the at least one processor, the electronic device may output the first test image based on the first timing information through the image output module while the variable polarizing film is controlled to the first state based on the second timing information, and output the second test image based on the first timing information through the image output module while the variable polarizing film is controlled to the second state based on the second timing information.

[0016] When the above instructions are executed individually or collectively by the at least one processor, the electronic device obtains a first representative value based on the first illuminance value group, and if the first representative value is less than a threshold value, determines the first timing information as the first target timing and the second timing information as the second target timing, and outputs a projection image based on the first target timing and the second target timing through the image output module, and the first representative value may be one of a maximum value or an average value.

[0017] When the above instructions are executed individually or collectively by the at least one processor, the electronic device may acquire delay information when the first representative value is greater than or equal to a threshold value, acquire third timing information by updating the second timing information based on the delay information, and alternately change the variable polarizing film to the first state or the second state based on the third timing information.

[0018] When the above instructions are executed individually or collectively by the at least one processor, the electronic device may, while controlling the variable polarizing film based on the third timing information, acquire a second illuminance value group including a plurality of illuminance values ​​through the illuminance sensor, acquire a second representative value based on the second illuminance value group, and if the second representative value is less than a threshold value, determine the first timing information as the first target timing and determine the third timing information as the second target timing.

[0019] The above illuminance sensor may be a sensor that senses an illuminance value based on light transmitted through an illuminance polarizing film for transmitting light directed in the first direction.

[0020] According to one embodiment, a control method for an electronic device including a variable polarizing film and an illuminance sensor comprises: acquiring first timing information for displaying a first test image and a second test image; acquiring second timing information for controlling a state change of the variable polarizing film based on the first timing information; alternately outputting the first test image and the second test image based on the first timing information through the image output module; alternately changing the variable polarizing film to a first state for transmitting light directed in a first direction or a second state for transmitting light directed in a second direction based on the second timing information; acquiring a first illuminance value group including a plurality of illuminance values ​​through the illuminance sensor while the first test image or the second test image is being output; and determining whether to correct one of the first timing information or the second timing information based on the first illuminance value group.

[0021] The first test image above may be a left-eye image for a 3D effect, and the second test image may be a right-eye image for a 3D effect.

[0022] The first test image above includes a background of a first color, and the second test image above may include a background of a second color that is brighter than the first color.

[0023] The first state above is a state for transmitting light directed in a first direction, and the second state above may be a state for transmitting light directed in a second direction different from the first direction.

[0024] The first state above is a state for transmitting x-axis polarization, and the second state above may be a state for transmitting y-axis polarization.

[0025] The step of outputting the first test image and the second test image may output the first test image based on the first timing information through the image output module while the variable polarizing film is controlled to the first state based on the second timing information, and output the second test image based on the first timing information through the image output module while the variable polarizing film is controlled to the second state based on the second timing information.

[0026] The step of determining whether to correct includes obtaining a first representative value based on the first illuminance value group, and if the first representative value is less than a threshold value, determining the first timing information as the first target timing and determining the second timing information as the second target timing, and the control method includes the step of outputting a projection image based on the first target timing and the second target timing through the image output module, and the first representative value may be one of a maximum value or an average value.

[0027] The step of determining whether to correct above may involve, if the first representative value is greater than or equal to a threshold value, acquiring delay information, acquiring third timing information by updating the second timing information based on the delay information, and alternately changing the variable polarizing film to the first state or the second state based on the third timing information.

[0028] The step of determining whether to correct the above may involve, while controlling the variable polarizing film based on the third timing information, obtaining a second illuminance value group including a plurality of illuminance values ​​through the illuminance sensor, obtaining a second representative value based on the second illuminance value group, and if the second representative value is less than a threshold value, determining the first timing information as the first target timing and determining the third timing information as the second target timing.

[0029] The above illuminance sensor may be a sensor that senses an illuminance value based on light transmitted through an illuminance polarizing film for transmitting light directed in the first direction.

[0030] FIG. 1 is a drawing for explaining the operation of providing a 3D image according to one embodiment.

[0031] FIG. 2 is a block diagram illustrating an electronic device according to one embodiment.

[0032] FIG. 3 is a block diagram illustrating the specific configuration of the electronic device of FIG. 2 according to one embodiment.

[0033] FIG. 4 is a drawing for explaining a polarizing film according to one embodiment.

[0034] FIG. 5 is a drawing for illustrating an electronic device including an image output module and a variable polarization film according to one embodiment.

[0035] FIG. 6 is a drawing for explaining a polarizing film and an illuminance sensor according to one embodiment.

[0036] FIG. 7 is a drawing for explaining an illuminance sensor including a polarizing film according to one embodiment.

[0037] FIG. 8 is a drawing illustrating a passive 3D effect that outputs two images to different devices according to one embodiment.

[0038] FIG. 9 is a drawing for explaining the active 3D effect according to one embodiment.

[0039] FIG. 10 is a diagram illustrating a 3D effect using a variable polarizing film and x-axis polarization according to one embodiment.

[0040] FIG. 11 is a drawing for explaining how to provide a 3D effect using a variable polarizing film and y-axis polarization according to one embodiment.

[0041] FIG. 12 is a drawing for explaining how to provide a 3D effect using x-axis polarization in a plurality of polarizing films according to one embodiment.

[0042] FIG. 13 is a drawing for explaining how to provide a 3D effect using y-axis polarization in a plurality of polarizing films according to one embodiment.

[0043] FIG. 14 is a drawing for explaining the operation of outputting an image through a display according to one embodiment.

[0044] FIG. 15 is a drawing for explaining the operation of outputting an image through a display according to one embodiment.

[0045] FIG. 16 is a drawing for illustrating a test image according to one embodiment.

[0046] FIG. 17 is a diagram illustrating a situation in which a test image is normally output according to one embodiment.

[0047] FIG. 18 is a diagram illustrating the illuminance value obtained in a situation where a test image is output normally, according to one embodiment.

[0048] FIG. 19 is a diagram illustrating a situation in which a test image is output abnormally according to one embodiment.

[0049] FIG. 20 is a diagram illustrating an illuminance value obtained in a situation where an image is output abnormally during a test, according to one embodiment.

[0050] FIG. 21 is a drawing for explaining the state of a variable polarizing film according to one embodiment.

[0051] FIG. 22 is a drawing for explaining the operation of providing a projected image by correcting the timing according to one embodiment.

[0052] FIG. 23 is a drawing for explaining first timing information applied to an image output module and second timing information applied to a variable polarizing film according to one embodiment.

[0053] FIG. 24 is a diagram illustrating the operation of providing a projection image and controlling a variable polarizing film by correcting timing based on an illuminance value group according to one embodiment.

[0054] FIG. 25 is a drawing for explaining the operation of outputting a test image according to one embodiment.

[0055] FIG. 26 is a drawing for explaining the operation of analyzing illuminance values ​​according to one embodiment.

[0056] FIG. 27 is a drawing for explaining the operation of correcting timing according to one embodiment.

[0057] FIG. 28 is a drawing for explaining the operation of correcting timing according to one embodiment.

[0058] FIG. 29 is a drawing for explaining the operation of providing a projection image according to one embodiment.

[0059] FIG. 30 is a drawing for explaining a method of controlling an electronic device according to one embodiment.

[0060] The present disclosure will be described in detail below with reference to the attached drawings.

[0061] The terms used in the embodiments of this disclosure have been selected to be as widely used as possible, taking into account their functions within this disclosure; however, these terms may vary depending on the intent of those skilled in the art, case law, the emergence of new technologies, etc. Additionally, in specific cases, terms have been arbitrarily selected by the applicant, and in such cases, their meanings will be described in detail in the relevant explanatory section of this disclosure. Therefore, terms used in this disclosure should be defined not merely by their names, but based on their meanings and the overall content of this disclosure.

[0062] In this specification, expressions such as “have,” “may have,” “include,” or “may include” indicate the presence of such features (e.g., numerical values, functions, operations, or components such as parts) and do not exclude the presence of additional features.

[0063] The expression "at least one of A or / and B" should be understood as representing either "A" or "B" or "A and B".

[0064] Expressions such as "first," "second," "first," or "second" used in this specification may modify various components regardless of order and / or importance, and are used only to distinguish one component from another and do not limit said components.

[0065] Where it is stated that a component (e.g., Component 1) is "(operatively or communicatively) coupled with / to" or "connected to" another component (e.g., Component 2), it should be understood that the component may be directly connected to the other component or connected through the other component (e.g., Component 3).

[0066] The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "consisting of" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0067] In the present disclosure, a "module" or "part" performs at least one function or operation and may be implemented in hardware or software, or a combination of hardware and software. Additionally, a plurality of "modules" or a plurality of "parts" may be integrated into at least one module and implemented by at least one processor, except for a "module" or "part" that needs to be implemented in specific hardware.

[0068] 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).

[0069] One or more embodiments of the present disclosure will be described in more detail below with reference to the attached drawings.

[0070] FIG. 1 is a drawing for explaining an operation of providing a 3D image according to one or more embodiments.

[0071] Referring to FIG. 1, the electronic device (100) can output a 3D image to provide a 3D effect. The 3D image can output a left eye image and a right eye image. The electronic device (100) can output a left eye image and a right eye image.

[0072] The user can wear 3D glasses (200). The user can view a 3D image output through the 3D glasses (200). The 3D glasses (200) may include a polarizing film. The 3D glasses (200) may allow light to pass through the polarizing film in a specific direction (e.g., orientation).

[0073] When light from a 3D image is received with an orientation in a specific direction imparted by a polarizing film, the user can detect (i.e., visually perceive) the 3D effect using binocular parallax.

[0074] FIG. 2 is a block diagram illustrating an electronic device (100) according to one or more embodiments.

[0075] Referring to FIG. 2, the electronic device (100) may include at least one of a memory (110) for storing instructions, at least one processor (120) including processing circuitry, an image output module (141), a variable polarizing film (142), or an illuminance sensor (151).

[0076] The electronic device (100) may be a device that outputs an image. At least one processor (120) may output an image through an image output module (141).

[0077] For example, the image output module (141) may include a display (140). At least one processor (120) may output an image through the display (140). An explanation related to this is provided in FIGS. 14 and FIGS. 15.

[0078] For example, the image output module (141) may include a projection unit. At least one processor (120) may output an image through the projection unit. An explanation related to this is described in FIGS. 10 to 13.

[0079] At least one processor (120) can output an image that provides a 3D effect. At least one processor (120) can alternately provide a left eye image and a right eye image to provide a 3D effect. At least one processor (120) can output a left eye image and a right eye image at a preset period (or pattern).

[0080] In outputting a left eye image and a right eye image, at least one processor (120) can control a variable polarization film (142). The variable polarization film (142) may be a film that controls the output light and / or image so that only light in a specific direction is transmitted. The variable polarization film (142) may be described as a variable transmission film, a variable polarization member, etc.

[0081] The variable polarization film (142) can be described as a phase modulation polarization element.

[0082] At least one processor (120) can simultaneously control the timing for changing the image and the timing for changing the state (or mode) of the variable polarizing film (142). At least one processor (120) can match a specific image with a state that transmits specific polarization.

[0083] At least one processor (120) can obtain first timing information for displaying a first test image and a second test image. The first test image and the second test image may be images for generating a 3D effect.

[0084] For example, the first test image may be a left-eye image for creating a 3D effect. The second test image may be a right-eye image for creating a 3D effect.

[0085] For example, a first test image may include a background of a first color. A second test image may include a background of a second color that is brighter than the first color.

[0086] At least one processor (120) can obtain second timing information for controlling the state change of the variable polarization film (142) based on the first timing information.

[0087] At least one processor (120) can alternately output a first test image and a second test image based on first timing information. The operation of alternately outputting may indicate that the first test image or the second test image is selectively output based on a preset period (or pattern). Descriptions of the first test image and the second test image are described in FIG. 16.

[0088] At least one processor (120) can alternately change the variable polarization film (142) to a first state for transmitting light directed in a first direction or a second state for transmitting light directed in a second direction based on second timing information.

[0089] For example, the first state may be a state for transmitting light directed in a first direction. The second state may be a state for transmitting light directed in a second direction different from the first direction.

[0090] For example, the first state may be a state for transmitting x-axis polarization. The second state may be a state for transmitting y-axis polarization. An explanation of x-axis polarization and y-axis polarization is provided in FIG. 4.

[0091] The first state and the second state are not applicable to only one physical configuration. The first state and the second state may exhibit physical properties for transmitting only light directed in a specific direction.

[0092] The first state may be described as the first phase, and the second state as the second phase. An operation to change from the first state to the second state may be described as an operation to modulate from the first phase to the second phase.

[0093] However, x-axis polarization and y-axis polarization are merely examples, and various polarization characteristics may be applied. An explanation related to this is described in FIG. 21.

[0094] At least one processor (120) can obtain a first illuminance value group including a plurality of illuminance values ​​through an illuminance sensor (151) while a first test image or a second test image is output. At least one processor (120) can correct one of the first timing information or the second timing information based on the first illuminance value group.

[0095] At least one processor (120) can output a first test image based on first timing information while the variable polarization film (142) is controlled to a first state based on second timing information.

[0096] At least one processor (120) can output a second test image based on first timing information while the variable polarization film (142) is controlled to a second state based on second timing information.

[0097] An explanation related to this is described in FIGS. 10 and FIGS. 17.

[0098] At least one processor (120) can obtain a first representative value based on a first illuminance value group. If the first representative value is less than a threshold value, at least one processor (120) can determine the first timing information as the first target timing and the second timing information as the second target timing. The first representative value may be either a maximum value or an average value.

[0099] The first target timing may represent timing information used to output projection images (left eye image and right eye image). The first target timing may be described as first target timing information or first final timing information.

[0100] The second target timing may represent timing information used to control the variable polarization film (142). The second target timing may be described as second target timing information or second final timing information.

[0101] An explanation related to this is described in Fig. 26.

[0102] At least one processor (120) can output a projection image based on a first target timing and a second target timing. An explanation related to this is described in FIG. 29.

[0103] At least one processor (120) can obtain delay information if the first representative value is greater than or equal to a threshold value. At least one processor (120) can obtain third timing information by reflecting the delay information in second timing information. At least one processor (120) can alternately change the variable polarizing film (142) to a first state or a second state based on the third timing information.

[0104] Delay information may include information for delaying timing. An operation to apply delay information to the first timing information, rather than the second timing information, is described in FIG. 28.

[0105] At least one processor (120) can obtain a second illuminance value group including a plurality of illuminance values ​​through an illuminance sensor (151) while controlling a variable polarizing film (142) based on third timing information. At least one processor (120) can obtain a second representative value based on the second illuminance value group. If the second representative value is less than a threshold value, at least one processor (120) can determine the first timing information as the first target timing and the third timing information as the second target timing.

[0106] An explanation related to this is shown in Fig. 27.

[0107] The illuminance sensor (151) may be a sensor that senses an illuminance value based on light transmitted through an illuminance polarizing film (152) for transmitting light directed in a first direction.

[0108] Descriptions related to the illuminance polarizing film (152) are described in FIGS. 5 to 7 and FIGS. 10 to 13.

[0109] At least one processor (120) can output a first test image with polarization in a first direction through a variable polarization film (142). At least one processor (120) can absorb (or sense) only polarization in a first direction through an illuminance polarization film (152). At least one processor (120) can obtain an illuminance value by sensing only polarization in a first direction corresponding to the first test image through an illuminance sensor (151).

[0110] The electronic device (100) can compare the expected illuminance value and the sensed illuminance value through the background color of the first test image. Based on the comparison result, the electronic device (100) can determine whether the image switching timing and the state switching timing of the variable polarizing film (142) match.

[0111] If the timing is matched, a timing correction operation may not be necessary. However, if the timing is mismatched, the electronic device (100) can match the image switching timing and the state switching timing of the variable polarizing film (142) through a timing correction operation.

[0112] Illuminance analysis performed under normal conditions is described in FIGS. 17 and FIGS. 18.

[0113] Illuminance analysis performed under abnormal conditions is described in FIGS. 19 and FIGS. 20.

[0114] The electronic device (100) can automatically match the image switching timing and the state switching timing of the variable polarizing film (142) without manual setting by the user.

[0115] For example, the electronic device (100) may place a dummy glass with an optical distance equivalent to that of a variable polarizing film (142). The dummy glass may be a film without polarizing properties. The electronic device (100) may output a normal image rather than a 3D image. When outputting a 3D image, the electronic device (100) may use the variable polarizing film (142). When outputting a normal image, the electronic device (100) may use the dummy glass instead of the variable polarizing film (142). The electronic device (100) may switch between the variable polarizing film (142) and the dummy glass based on the image type of the output target. When using the dummy glass, problems such as reduced brightness or overheating can be prevented.

[0116] For example, the electronic device (100) may include a cooling module for cooling when implementing a variable polarization film (142). The cooling module may include a fan. The fan may be placed within a critical distance from the variable polarization film (142). The cooling module may generate an airflow through the fan. The temperature of the variable polarization film (142) may be controlled through the airflow.

[0117] For example, the variable polarizing film (142) may include a first polarizing film and a second polarizing film provided in a sliding manner. The first polarizing film may be a film that allows only light directed in a first direction to pass through. The second polarizing film may be a film that allows only light directed in a second direction to pass through. The first polarizing film and the second polarizing film may be moved in a sliding manner based on first timing information. When a first test image is output, the electronic device (100) may move the first polarizing film in a sliding manner so that it is aligned with the direction in which the first test image is output. When a second test image is output, the electronic device (100) may move the second polarizing film in a sliding manner so that it is aligned with the direction in which the second test image is output.

[0118] FIG. 3 is a block diagram for explaining the specific configuration of the electronic device (100) of FIG. 2 according to one or more embodiments.

[0119] Referring to FIG. 3, the electronic device (100) may include at least one of a memory (110), at least one processor (120), a communication interface (130), a display (140), a speaker (145), a sensor unit (150), a camera (155), a microphone (160), an operation interface (165), an input / output interface (170), and a power supply unit (175).

[0120] The memory (110) may be implemented as internal memory such as ROM (e.g., EEPROM (electrically erasable programmable read-only memory)) or RAM included in at least one processor (120), or as memory separate from at least one processor (120). Depending on the purpose of data storage, the memory (110) may be implemented as a memory embedded in the electronic device (100) or as a memory that can be attached to and detached from the electronic device (100). For example, data for operating the electronic device (100) may be stored in memory embedded in the electronic device (100), and data for the expansion function of the electronic device (100) may be stored in memory that can be attached to and detached from the electronic device (100).

[0121] In the case of memory embedded in the electronic device (100), it may be implemented as at least one of volatile memory (e.g., DRAM (dynamic RAM), SRAM (static RAM), or SDRAM (synchronous dynamic RAM), etc.), non-volatile memory (e.g., OTPROM (one time programmable ROM), PROM (programmable ROM), EPROM (erasable and programmable ROM), EEPROM (electrically erasable and programmable ROM), 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 is detachable from the electronic device (100), it may be implemented in the form of a memory card (e.g., CF (compact flash), SD (secure digital), Micro-SD (micro secure digital), Mini-SD (mini secure digital), xD (extreme digital), MMC (multi-media card), etc.), external memory that can be connected to a USB port (e.g., USB memory).

[0122] Memory (110) can store at least one instruction. Based on the instruction stored in memory (110), at least one processor (120) can perform various operations.

[0123] At least one processor (120) can perform overall control operations of the electronic device (100). At least one processor (120) can perform the function of controlling the overall operation of the electronic device (100).

[0124] At least one processor (120) may be implemented as a digital signal processor (DSP) that processes digital signals, a microprocessor, or a time controller (TCON). However, it is not limited thereto, and may include or be defined by 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 ARM (advanced reduced instruction set computer (RISC) machine) processor. At least one processor (120) may be implemented as a System on Chip (SoC) or large scale integration (LSI) with a built-in processing algorithm, or may be implemented in the form of a Field Programmable Gate Array (FPGA). At least one processor (120) can perform various functions by executing computer executable instructions stored in memory.

[0125] The communication interface (130) is a configuration that communicates with various types of external devices according to various types of communication methods. The communication interface (130) may include a wireless communication module and / or a wired communication module. Each communication module may be implemented in the form of at least one hardware chip.

[0126] A wireless communication module may be a module that communicates wirelessly with an external device. For example, a wireless communication module may include at least one module among a Wi-Fi module, a Bluetooth module, an infrared communication module, or other communication modules.

[0127] Wi-Fi modules and Bluetooth modules can perform communication using Wi-Fi and Bluetooth methods, respectively. When using a Wi-Fi module or a Bluetooth module, various connection information, such as the SSID (service set identifier) ​​and session key, is transmitted and received first; after establishing a communication connection using this information, various types of information can be transmitted and received.

[0128] The infrared communication module performs communication according to infrared communication (IrDA, Infrared Data Association) technology, which uses infrared rays located between visible light and millimeter waves to wirelessly transmit data over short distances.

[0129] 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), and 5G (5th Generation), in addition to the communication method described above.

[0130] A wired communication module may be a module that communicates with an external device via a wire. For example, a wired communication module may include at least one of a Local Area Network (LAN) module, an Ethernet module, a pair cable, a coaxial cable, a fiber optic cable, or an Ultra Wide-Band (UWB) module.

[0131] According to one or more embodiments, the communication interface (130) may use the same communication module (e.g., Wi-Fi module) to communicate with an external device, such as a remote control device, and an external server.

[0132] According to one or more embodiments, the communication interface (130) may use different communication modules to communicate with external devices, such as a remote control device and an external server. For example, the communication interface (130) may use at least one of an Ethernet module or a Wi-Fi module to communicate with an external server, and may use a Bluetooth module to communicate with an external device, such as a remote control device. However, this is merely one or more embodiments, and the communication interface (130) may use at least one of various communication modules when communicating with multiple external devices or external servers.

[0133] The display (140) 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), a DMD (Digital Micromirror Device), etc. The display (140) may also include a driving circuit, a backlight unit, etc., which can be implemented in forms such as an a-si TFT (amorphous silicon thin film transistor), an LTPS (low temperature poly silicon) TFT, or an OTFT (organic TFT). The display (140) can be implemented as a touch screen combined with a touch sensor, a flexible display, a 3D display, a three-dimensional display, etc. According to one or more embodiments of the present disclosure, the display (140) may include not only a display panel that outputs an image, but also a bezel that houses the display panel. In particular, according to one or more embodiments of the present disclosure, the bezel may include a touch sensor for detecting user interaction.

[0134] The display (140) can display a screen. The screen may include images, videos, text, etc. The screen may include a content screen, an application execution screen, a web browser screen, a GUI (Graphic User Interface) screen, etc.

[0135] The speaker (145) may be a component that outputs various audio data as well as various notification sounds or voice messages.

[0136] The sensor unit (150) can collect data indicating a state related to the surrounding environment or the electronic device (100). The sensor unit (150) may include at least one sensor. The sensor unit (150) may include a sensor that senses the external environment of the electronic device (100). For example, the sensor unit (150) may be configured to detect or sense one or more of brightness, electromagnetic radiation, temperature, motion, acceleration, distance, image contrast, resolution, and the color of ambient / incident / reflected light. The sensor unit (150) may include a sensor that senses the internal state of the electronic device (100). The sensing data collected through the sensor may be transmitted to one of the memory (110), at least one processor (120), or a communication interface (130) of the electronic device (100).

[0137] The camera (155) is configured to capture an object and generate an image, and the image includes both video and still images. The camera (155) can acquire an image of at least one external device and can be implemented as a camera, lens, infrared sensor, etc.

[0138] The camera (155) may include a lens and an image sensor. The types of lenses include general-purpose lenses, wide-angle lenses, zoom lenses, etc., and may be determined according to the type, characteristics, and usage environment of the electronic device (100). As an image sensor, a Complementary Metal Oxide Semiconductor (CMOS) and a Charge Coupled Device (CCD) may be used.

[0139] The microphone (160) is a component for receiving user voice or other sounds and converting them into audio data. The microphone (160) can receive the user's voice when active. For example, the microphone (160) may be formed integrally on the upper side, front side, or side side of the electronic device (100). The microphone (160) may include various components such as a microphone for collecting analog user voice, an amplifier circuit for amplifying the collected user voice, an A / D conversion circuit for sampling the amplified user voice and converting it into a digital signal, and a filter circuit for removing noise components from the converted digital signal.

[0140] The operation interface (165) may be implemented as a device such as a button, touchpad, mouse, and keyboard, or as a touch screen capable of performing the aforementioned display function and operation input function. The button may be a various type of button, such as a mechanical button, touchpad, or wheel, formed in any area of ​​the exterior of the main body of the electronic device (100), such as the front, side, or back portions.

[0141] The input / output interface (170) may be any one of the following interfaces: HDMI (High Definition Multimedia Interface), MHL (Mobile High-Definition Link), USB (Universal Serial Bus), DP (Display Port), Thunderbolt, VGA (Video Graphics Array) port, RGB port, D-SUB (D-subminiature), and DVI (Digital Visual Interface). The input / output interface (170) may input and output at least one of audio and video signals. Depending on the implementation example, the input / output interface (170) may include separate ports for inputting and outputting only audio signals and for inputting and outputting only video signals, or it may be implemented as a single port for inputting and outputting both audio and video signals. The electronic device (100) may transmit at least one of the audio and video signals to an external device (e.g., an external display device or an external speaker) through the input / output interface (170). An output port included in the input / output interface (170) can be connected to an external device, and the electronic device (100) can transmit at least one of audio and video signals to the external device through the output port.

[0142] The input / output interface (170) can be connected to a communication interface. The input / output interface (170) can transmit information received from an external device to the communication interface or transmit information received through the communication interface to an external device.

[0143] The power supply unit (175) can generate, convert, or supply power required for the electronic device (100). The power supply unit (175) can generate a supply voltage or a supply current using the power. The power generated by the power supply unit (175) can be supplied to various components included in the electronic device (100).

[0144] FIG. 4 is a drawing for illustrating a polarizing film according to one or more embodiments.

[0145] Referring to the embodiment (410) of FIG. 4, when light having a plurality of directions or orientations passes through the x-axis polarizing film (411), only light having an x-axis direction or orientation can be output through the x-axis polarizing film (411).

[0146] Referring to the embodiment (420) of FIG. 4, when light having a plurality of directions or orientations passes through a y-axis polarizing film (421), only light having a y-axis direction or orientation can be output through the y-axis polarizing film (421).

[0147] FIG. 5 is a drawing for illustrating an electronic device (100) including an image output module (141) and a variable polarizing film (142) according to one or more embodiments.

[0148] Referring to the embodiment (500) of FIG. 5, the electronic device (100) may include at least one processor (120), an image output module (141), a variable polarizing film (142), an illuminance polarizing film (152), or an illuminance sensor (151).

[0149] The electronic device (100) can control the image output module (141) through the operation of at least one processor (120). The image output module (141) can output an image outside the electronic device (100). The image output by the image output module (141) can be output outside the electronic device (100) through a variable polarizing film (142).

[0150] The electronic device (100) can control the light sensor (151) through at least one processor (120). The electronic device (100) can activate the light sensor (151). The electronic device (100) may include a light sensor (151) that receives light from outside the electronic device (100) through a light polarizing film (152). Light from outside the electronic device (100) can be received by the light sensor (151) through the light polarizing film (152).

[0151] The electronic device (100) can control the timing of the image output module (141) or the variable polarization film (142) based on the illuminance sensed by the illuminance sensor (151).

[0152] The electronic device (100) can transmit first timing information to an image output module (141). The image output module (141) can output a first test image and a second test image based on the first timing information.

[0153] The electronic device (100) can transmit second timing information to the variable polarizing film (142). The variable polarizing film (142) can control the state of the variable polarizing film (142) to a first state or a second state based on the second timing information.

[0154] FIG. 6 is a drawing for illustrating a polarizing film and an illuminance sensor according to one or more embodiments.

[0155] Embodiments (610, 620, 630) of FIG. 6 may represent an electronic device (100) in which an illuminance polarizing film (152) and an illuminance sensor (151) are separated. At least one processor (120), image output module (141), variable polarizing film (142), illuminance polarizing film (152), and illuminance sensor (151) described in FIG. 5 may also be applied to FIG. 6. Duplicate and / or overlapping descriptions are omitted.

[0156] The illuminance polarizing film (152) may be placed outside the electronic device (100) than the illuminance sensor (151). External light of the electronic device (100) may be received by the illuminance sensor (151) through the illuminance polarizing film (152).

[0157] Referring to the embodiment (610) of FIG. 6, the illuminance polarizing film (152) may be implemented as a first polarizing film. The first polarizing film may represent a polarizing film of a first state. The first polarizing film of the first state may allow light directed in a first direction to pass through. The first state may represent a structure designed to selectively transmit (or pass) light based on a specific vibration direction or component. The first state may represent an optical property that selectively transmits (or passes) light based on a specific vibration direction or component. The electronic device (100) may control the image output module (141) and the variable polarizing film (142) based on a synchronization (or sync) signal. The sync signal may represent timing information or target timing.

[0158] For example, the first state may be a state configured to transmit light having directivity or orientation along or on the x-axis, or a state configured to transmit light having clockwise directivity or orientation.

[0159] Referring to the embodiment (620) of FIG. 6, the illuminance polarizing film (152) may be implemented as a second polarizing film. The second polarizing film may represent a polarizing film in a second state. The second polarizing film in a second state may allow light directed in a second direction to pass through. The second state may represent a structure designed to selectively transmit (or pass) light based on a specific vibration direction or component. The second state may represent an optical property that selectively transmits (or passes) light based on a specific vibration direction or component. The electronic device (100) may control the image output module (141) and the variable polarizing film (142) based on a sync signal. The sync signal may represent timing information or target timing.

[0160] For example, the second state may be a state configured to transmit light having directivity or orientation in the y-axis, or a state configured to allow light having clockwise directivity or orientation to pass through.

[0161] Referring to the embodiment (630) of FIG. 6, the illuminance polarizing film (152) may be implemented as a second variable polarizing film. The variable polarizing film (142) may be described as a first variable polarizing film. The electronic device (100) may control the state of the illuminance polarizing film (152) according to user settings. If the illuminance polarizing film (152) is to be controlled to a first state, the electronic device (100) may transmit a control signal to the illuminance polarizing film (152) to control it to the first state. If the illuminance polarizing film (152) is to be controlled to a second state, the electronic device (100) may transmit a control signal to the illuminance polarizing film (152) to control it to the second state. The electronic device (100) may control the image output module (141) and the variable polarizing film (142) based on a sync signal. The sync signal may represent timing information or target timing. Unlike the variable polarization film (142), the illuminance polarization film (152) may not need to have its state repeatedly changed according to a specific period.

[0162] FIG. 6 describes an embodiment in which the illuminance polarizing film (152) is distinguished from the illuminance sensor (151). Depending on the embodiment, the illuminance polarizing film (152) may be included in the illuminance sensor (151).

[0163] FIG. 7 is a drawing for illustrating an illuminance sensor (151) including a polarizing film according to one or more embodiments.

[0164] The embodiments (710, 720, 730) of FIG. 7 may correspond to the embodiments (610, 620, 630) of FIG. 6. Redundant descriptions are omitted.

[0165] The illuminance polarizing film (152) may be placed so as to be included in the illuminance sensor (151). The illuminance polarizing film (152) may be placed in contact with the surface of the illuminance sensor (151). The illuminance polarizing film (152) may be placed in the direction outside the electronic device (100) within the illuminance sensor (151). The electronic device (100) may transmit a control signal to the illuminance sensor (151) to directly control the illuminance polarizing film (152). The illuminance sensor (151) may transmit the control signal to the illuminance polarizing film (152). The illuminance polarizing film (152) may control its state based on the control signal.

[0166] FIG. 8 is a drawing for explaining a passive 3D effect in which two images are output to different devices according to one or more embodiments.

[0167] Referring to the embodiment (800) of FIG. 8, the first electronic device (10) can output a left eye image. The second electronic device (20) can output a right eye image.

[0168] The first electronic device (10) and the second electronic device (20) may commonly include a main chipset, a DLP (Digital Light Processing) output device, and a DLP panel.

[0169] The first electronic device (10) may include an x-axis polarizing film. The first electronic device (10) may output a left-eye image through a DLP output device. The left-eye image may be output externally through a DLP panel and an x-axis polarizing film.

[0170] The second electronic device (20) may include a y-axis polarizing film. The second electronic device (20) may output a right eye image through a DLP output device. The right eye image may be output externally through a DLP panel and a y-axis polarizing film.

[0171] The user may wear 3D glasses (40). The left light-transmitting part (41) of the 3D glasses (40) may be for x-axis polarization, and the right light-transmitting part (42) of the 3D glasses (40) may be for y-axis polarization.

[0172] The left light-transmitting part (41) can transmit a left eye image output from the first electronic device (10). The left light-transmitting part (41) cannot transmit a right eye image output from the second electronic device (20).

[0173] The right light-transmitting part (42) cannot transmit the left eye image output from the first electronic device (10). The right light-transmitting part (42) can transmit the right eye image output from the second electronic device (20).

[0174] The user can experience a 3D effect by wearing 3D glasses (40) that include a left light-transmitting part (41) and a right light-transmitting part (42).

[0175] FIG. 9 is a drawing for explaining an active 3D effect according to one or more embodiments.

[0176] Referring to the embodiment (910, 920) of FIG. 9, the third electronic device (30) may include at least one of a main chipset, a DLP output device, or a DLP panel. Descriptions of the main chipset, the DLP output device, or the DLP panel are described in FIG. 8. Redundant descriptions are omitted.

[0177] Referring to the embodiment (910) of FIG. 9, the third electronic device (30) can output a left eye image. When the left eye image is output, the electronic device (100) can transmit a first sync signal corresponding to the left eye image to the 3D glasses (50). The 3D glasses (50) may be a device for determining whether the left light-transmitting part (51) or the right light-transmitting part (52) transmits light. The 3D glasses (50) may open the left light-transmitting part (51) and block the right light-transmitting part (52) based on the first sync signal. The 3D glasses (50) may transmit the output left eye image through the left light-transmitting part (51) based on the first sync signal. The right light-transmitting part (52) may not transmit the left eye image.

[0178] Referring to the embodiment (920) of FIG. 9, the third electronic device (30) can output a right eye image. When the right eye image is output, the electronic device (100) can transmit a second sync signal corresponding to the right eye image to the 3D glasses (50). The 3D glasses (50) may be a device for determining whether the left light-transmitting part (51) or the right light-transmitting part (52) transmits light. The 3D glasses (50) may block the left light-transmitting part (51) and open the right light-transmitting part (52) based on the second sync signal. The 3D glasses (50) may transmit the output right eye image through the right light-transmitting part (52) based on the second sync signal. The left light-transmitting part (51) may not transmit the right eye image.

[0179] FIGS. 10 to 14 illustrate the operation of correcting timing by outputting a test image.

[0180] The test image may include a first test image and a second test image. The first test image may be a left-eye image, and the second test image may be a right-eye image. The first test image (left-eye image) may include relatively dark colors (compared to the second test image). The second test image (right-eye image) may include relatively bright colors (compared to the first test image). In the description below, the first test image is referred to as the left-eye image, and the second test image is referred to as the right-eye image.

[0181] For example, the left-eye image may include a black background. The right-eye image may include a white background. When the left-eye image with a black background is displayed, the ambient illumination may be lower than when the right-eye image is displayed. When the right-eye image with a white background is displayed, the ambient illumination may be higher than when the left-eye image is displayed.

[0182] The electronic device (100) may include at least one processor (120). For example, the at least one processor (120) may include at least one of a main chipset or an MCU.

[0183] The electronic device (100) may include an image output module (141). For example, the image output module (141) may include at least one of a DLP output device or a DLP panel. The DLP output device may output an image to pass through the DLP panel. The image output through the DLP panel may be output externally through a variable polarization film (142). Depending on the state of the variable polarization film (142), only light having a specific directionality may pass through. The MCU may output a left-eye image and a right-eye image by controlling the DLP output device. The DLP output device may output the left-eye image and the right-eye image alternately.

[0184] FIG. 10 is a drawing for explaining a 3D effect using x-axis polarization according to one or more embodiments.

[0185] Referring to FIG. 10, the illuminance polarizing film (152) can be implemented as a first polarizing film. The first polarizing film may represent a polarizing film in a first state. The first polarizing film in a first state can pass light directed in a first direction.

[0186] Referring to the embodiment (1010) of FIG. 10, the DLP output device can output a left-eye image. The output left-eye image can be output through a DLP panel and a variable polarizing film (142).

[0187] The DLP output device can transmit a first sync signal to the variable polarization film (142) to control the variable polarization film (142) to the left eye image x-axis polarization state. The variable polarization film (142) can operate in the x-axis polarization state based on the first sync signal.

[0188] The user may wear 3D glasses (200). The 3D glasses (200) may include a left light-transmitting part (241) and a right light-transmitting part (242). The left light-transmitting part (241) may include a film in a first state (a state in which only light directed in a first direction is transmitted). The right light-transmitting part (242) may include a film in a second state (a state in which only light directed in a second direction is transmitted).

[0189] For example, the left light-transmitting part (241) may be a light-transmitting part in an x-axis polarized state. For example, the right light-transmitting part (242) may be a light-transmitting part in a y-axis polarized state.

[0190] The left eye image may be an image output through a variable polarizing film (142) in an x-axis polarization state. Therefore, the output left eye image can pass through the left light transmission part (241). However, the output left eye image may not pass through the right light transmission part (242). This is because the left eye image is x-axis polarized, and the right light transmission part (242) transmits only y-axis polarized light. The output left eye image can be shown to the user through the left light transmission part (241) of the 3D glasses (200).

[0191] While the left eye image is being output, the electronic device (100) can obtain an illuminance value through an illuminance sensor (151) and an illuminance polarizing film (152). The electronic device (100) can obtain an illuminance value for the surrounding environment in which the electronic device (100) is placed. The electronic device (100) can obtain light transmitted through the illuminance polarizing film (152) through the illuminance sensor (151).

[0192] For example, the illuminance polarizing film (152) can be implemented as a first polarizing film. The first polarizing film may be a transmission module in an x-axis polarization state.

[0193] When the illuminance polarizing film (152) transmits x-axis polarization, light corresponding to the left eye image can pass through the illuminance polarizing film (152) and reach the illuminance sensor (151). The illuminance sensor (151) can sense the light corresponding to the left eye image. When the left eye image includes a dark background, the illuminance sensor (151) can sense a relatively low illuminance value.

[0194] Referring to the embodiment (1020) of FIG. 10, the DLP output device can output a right eye image. The output right eye image can be output through a DLP panel and a variable polarizing film (142).

[0195] The DLP output device can transmit a second sync signal to the variable polarization film (142) to control the variable polarization film (142) to a right eye image y-axis polarization state. The variable polarization film (142) can operate in a y-axis polarization state based on the second sync signal.

[0196] The user may wear 3D glasses (200). The 3D glasses (200) may include a left light-transmitting part (241) and a right light-transmitting part (242). For example, the left light-transmitting part (241) may be a light-transmitting part in a y-axis polarized state. For example, the right light-transmitting part (242) may be a light-transmitting part in a y-axis polarized state.

[0197] The right eye image may be an image output through a variable polarizing film (142) in a y-axis polarization state. Therefore, the output right eye image can pass through the right light transmission part (242). However, the output right eye image may not pass through the left light transmission part (241). This is because the right eye image is y-axis polarized, and the left light transmission part (241) transmits only x-axis polarized light. The output right eye image can be shown to the user through the right light transmission part (242) of the 3D glasses (200).

[0198] While the right eye image is being output, the electronic device (100) can obtain an illuminance value through an illuminance sensor (151) and an illuminance polarizing film (152). The electronic device (100) can obtain an illuminance value for the surrounding environment in which the electronic device (100) is placed. The electronic device (100) can obtain light transmitted through the illuminance polarizing film (152) through the illuminance sensor (151).

[0199] For example, the illuminance polarizing film (152) can be implemented as a first polarizing film. The first polarizing film may be a transmission module in an x-axis polarization state.

[0200] If the illuminance polarizing film (152) transmits x-axis polarization, the light corresponding to the right eye image may not pass through the illuminance polarizing film (152). This is because the right eye image is y-axis polarization output by the variable polarizing film (142). The illuminance sensor (151) may not be able to sense the light corresponding to the right eye image. If the right eye image includes a bright background, the illuminance sensor (151) may not be able to sense the bright light corresponding to the right eye image.

[0201] In FIG. 10, the illuminance polarizing film (152) is described as a first polarizing film that transmits x-axis polarization.

[0202] FIG. 11 shows that the illuminance polarizing film (152) may be a second polarizing film that transmits y-axis polarization. The illuminance polarizing film (152) may be implemented as a second polarizing film.

[0203] FIG. 11 is a drawing for explaining how to provide a 3D effect using y-axis polarization according to one or more embodiments.

[0204] The second polarizing film may represent a polarizing film in a second state. The second polarizing film in a second state may allow light directed in a second direction to pass through. The embodiments (1110, 1120) of FIG. 11 may correspond to the embodiments (1010, 1020) of FIG. 10. Redundant descriptions are omitted.

[0205] Referring to the embodiment (1110) of FIG. 11, a user may wear 3D glasses (200). The left eye image may be an image output through a variable polarizing film (142) in an x-axis polarization state. Thus, the output left eye image may pass through the left light transmission part (241). However, the output left eye image may not pass through the right light transmission part (242). This is because the left eye image is x-axis polarized, and the right light transmission part (242) transmits only y-axis polarized light. The output left eye image may be shown to the user through the left light transmission part (241) of the 3D glasses (200).

[0206] While the left eye image is being output, the electronic device (100) can obtain an illuminance value through an illuminance sensor (151) and an illuminance polarizing film (152). The electronic device (100) can obtain an illuminance value for the surrounding environment in which the electronic device (100) is placed. The electronic device (100) can obtain light transmitted through the illuminance polarizing film (152) through the illuminance sensor (151).

[0207] For example, the illuminance polarizing film (152) can be implemented as a second polarizing film. The second polarizing film can be a transmission module in a y-axis polarization state.

[0208] If the illuminance polarizing film (152) transmits y-axis polarization, the light corresponding to the left eye image may not pass through the illuminance polarizing film (152). This is because the left eye image is x-axis polarization output by the variable polarizing film (142). The illuminance sensor (151) may not be able to sense the light corresponding to the left eye image. If the left eye image includes a dark background, the illuminance sensor (151) may not be able to sense the dark light corresponding to the left eye image.

[0209] Referring to the embodiment (1120) of FIG. 11, a user may wear 3D glasses (200). The right eye image may be an image output through a variable polarizing film (142) in a y-axis polarization state. Therefore, the output right eye image cannot pass through the left light transmission part (241). This is because the right eye image is y-axis polarized, and the left light transmission part (241) transmits only x-axis polarized light. However, the output right eye image can pass through the right light transmission part (242). The output right eye image can be shown to the user through the right light transmission part (242) of the 3D glasses (200).

[0210] While the right eye image is being output, the electronic device (100) can obtain an illuminance value through an illuminance sensor (151) and an illuminance polarizing film (152). The electronic device (100) can obtain an illuminance value for the surrounding environment in which the electronic device (100) is placed. The electronic device (100) can obtain light transmitted through the illuminance polarizing film (152) through the illuminance sensor (151).

[0211] For example, the illuminance polarizing film (152) can be implemented as a second polarizing film. The second polarizing film can be a transmission module in a y-axis polarization state.

[0212] When the illuminance polarizing film (152) transmits y-axis polarization, light corresponding to the right eye image can pass through the illuminance polarizing film (152). This is because the right eye image is y-axis polarization output by the variable polarizing film (142). The illuminance sensor (151) can sense the light corresponding to the right eye image. When the right eye image includes a bright background, the illuminance sensor (151) can sense the bright light corresponding to the right eye image.

[0213] In FIGS. 10 and 11, it is stated that the illuminance polarizing film (152) is a polarizing film in a fixed state. The illuminance polarizing film (152) in FIGS. 10 and 11 may be a fixed polarizing film whose state does not change according to the control of the electronic device (100). However, in FIGS. 12 and 13, the state of the illuminance polarizing film (152) may vary according to the control of the electronic device (100). The illuminance polarizing film (152) may be implemented as a variable polarizing film. For convenience of distinction, the variable polarizing film (142) may be described as a first variable polarizing film, and the illuminance polarizing film (152) may be described as a second variable polarizing film.

[0214] FIG. 12 is a drawing for explaining how to provide a 3D effect using x-axis polarization in a plurality of polarizing films according to one or more embodiments.

[0215] The embodiments (1210, 1220) of FIG. 12 may correspond to the embodiments (1010, 1020) of FIG. 10, except that the illuminance polarizing film (152) is a variable polarizing film. Redundant description is omitted.

[0216] The illuminance polarizing film (152) may be a second variable polarizing film in an x-axis polarization state. The electronic device (100) may transmit a control signal to the illuminance polarizing film (152) to make it in an x-axis polarization state.

[0217] Referring to the embodiment (1210) of FIG. 12, the electronic device (100) can output a left-eye image of x-axis polarization through a variable polarization film (142). An illuminance sensor (151) can sense x-axis polarization corresponding to the left-eye image through an illuminance polarization film (152).

[0218] Referring to the embodiment (1220) of FIG. 12, the electronic device (100) can output a right-eye image of y-axis polarization through a variable polarization film (142). The illuminance sensor (151) may not be able to sense the y-axis polarization corresponding to the right-eye image. This is because the y-axis polarization corresponding to the right-eye image cannot pass through the illuminance polarization film (152) which transmits only x-axis polarization.

[0219] FIG. 13 is a drawing for explaining how to provide a 3D effect using y-axis polarization in a plurality of polarizing films according to one or more embodiments.

[0220] The embodiments (1310, 1320) of FIG. 13 may correspond to the embodiments (1110, 1120) of FIG. 11, except that the illuminance polarizing film (152) is a variable polarizing film. Redundant description is omitted.

[0221] The illuminance polarizing film (152) may be a second variable polarizing film in a y-axis polarization state. The electronic device (100) may transmit a control signal to the illuminance polarizing film (152) to make it in a y-axis polarization state.

[0222] Referring to the embodiment (1310) of FIG. 13, the electronic device (100) can output a left-eye image of x-axis polarization through a variable polarization film (142). The illuminance sensor (151) may not be able to sense the x-axis polarization corresponding to the left-eye image. This is because the x-axis polarization corresponding to the left-eye image cannot pass through the illuminance polarization film (152) which transmits only y-axis polarization.

[0223] Referring to the embodiment (1320) of FIG. 13, the electronic device (100) can output a right-eye image of y-axis polarization through a variable polarization film (142). An illuminance sensor (151) can sense the y-axis polarization corresponding to the right-eye image through an illuminance polarization film (152).

[0224] FIGS. 8 to 13 describe the operation of outputting a projected image onto a projection surface through an image output unit. FIGS. 14 and 15 describe the operation of outputting an image through a display (140). The image output module (141) may include a display (140).

[0225] FIG. 14 is a drawing for explaining the operation of outputting an image through a display (140) according to one or more embodiments.

[0226] Referring to the embodiment (1410) of FIG. 14, the electronic device (100) can display a left eye image (first test image) through a display (140).

[0227] Referring to the embodiment (1420) of FIG. 14, the electronic device (100) can display a right eye image (second test image) through a display (140).

[0228] The electronic device (100) can alternately display a left eye image and a right eye image based on first timing information. The first timing information may include a first interval and a second interval. The electronic device (100) can display a left eye image in the first interval and a right eye image in the second interval.

[0229] FIG. 15 is a drawing for explaining the operation of outputting an image through a display (140) according to one or more embodiments.

[0230] Referring to the embodiment (1500) of FIG. 15, the electronic device (100) may include at least one of a processor (120), a display (140), an image output module (141), a variable polarizing film (142), an illuminance sensor (151), and an illuminance polarizing film (152).

[0231] At least one processor (120) can acquire a test image. At least one processor (120) can generate a control signal for outputting the test image. At least one processor (120) can transmit the control signal to an image output module (141). The image output module (141) can control the display (140) to output the test image based on the received control signal.

[0232] Light corresponding to the test image output from the display (140) can spread out of the electronic device (100) through the variable polarization film (142).

[0233] FIG. 16 is a drawing for illustrating a test image according to one or more embodiments.

[0234] Referring to the embodiment (1600) of FIG. 16, the electronic device (100) can acquire a test image. The test image may include a first test image and a second test image. For example, the first test image may be a left eye image and the second test image may be a right eye image.

[0235] The electronic device (100) can alternately output a first test image and a second test image based on first timing information. The first timing information may include a first interval and a second interval. The first interval may be an interval for outputting the first test image. The second interval may be an interval for outputting the second test image.

[0236] The first timing information may include a first period (or first pattern) in which the first section and the second section are repeated.

[0237] The electronic device (100) can output a first test image (1610) at a first time point (t1). The electronic device (100) can output a first test image (1610) in a first interval included in the first timing information.

[0238] The electronic device (100) can output a second test image (1620) at a second time point (t2). The electronic device (100) can output a second test image (1620) in a second interval included in the first timing information.

[0239] The electronic device (100) can output a first test image (1610) at a third time point (t3). The electronic device (100) can output a first test image (1610) in a first interval included in the first timing information.

[0240] The electronic device (100) can output a second test image (1620) at a fourth time point (t4). The electronic device (100) can output a second test image (1620) in a second interval included in the first timing information.

[0241] The first test image (1610) and the second test image (1620) can be displayed alternately based on the first period included in the first timing information.

[0242] FIG. 17 is a diagram illustrating a situation in which a test image is normally output according to one or more embodiments.

[0243] Referring to the embodiment (1700) of FIG. 17, the electronic device (100) can control the image output module (141) based on the first timing information. The image output module (141) can output a first test image and a second test image based on the first timing information.

[0244] The electronic device (100) can control the variable polarization film (142) based on second timing information. The variable polarization film (142) can alternately change the first state for x-axis polarization and the second state for y-axis polarization based on the second timing information.

[0245] In the first section (p1), the electronic device (100) can output a first test image. Light corresponding to the first test image can be output to the outside of the electronic device (100) through a variable polarizing film (142) for passing x-axis polarization. The light corresponding to the first test image output to the outside can have x-axis polarization characteristics. The electronic device (100) can obtain an illuminance value (sensing data) through an illuminance sensor (151). The illuminance sensor (151) can sense the light corresponding to the first test image through an illuminance polarizing film (152). If the illuminance polarizing film (152) has the property of transmitting x-axis polarization, the illuminance sensor (151) can sense the light (x-axis polarization) corresponding to the first test image.

[0246] In the second section (p2), the electronic device (100) can output a second test image. Light corresponding to the second test image can be output to the outside of the electronic device (100) through a variable polarizing film (142) for passing y-axis polarization. The light corresponding to the second test image output to the outside may have y-axis polarization characteristics. The electronic device (100) can obtain an illuminance value (sensing data) through an illuminance sensor (151). The illuminance sensor (151) may not be able to sense the light corresponding to the second test image through the illuminance polarizing film (152). If the illuminance polarizing film (152) has the property of transmitting x-axis polarization, the illuminance sensor (151) may not be able to sense the light (y-axis polarization) corresponding to the second test image.

[0247] FIG. 18 is a drawing for explaining the illuminance value obtained in a situation where a test image is output normally according to one or more embodiments.

[0248] The embodiment (1810) of FIG. 18 may correspond to the embodiment (1700) of FIG. 17. Redundant description is omitted.

[0249] The embodiment (1820) of FIG. 18 illustrates a case where the space in which the electronic device (100) is placed is a bright space. A bright space may mean a space where the absolute illuminance value is greater than or equal to a critical illuminance.

[0250] The electronic device (100) can acquire basic illuminance value information (1821) corresponding to a bright space. The basic illuminance value information (1821) may include at least one of a reference illuminance value (100) sensed when a right eye image is output, a reference illuminance value (40) sensed when a left eye image is output, and an illuminance value around the room (20). The illuminance value around the room (20) may be acquired by the sensing operation of an illuminance sensor (151). The unit of the illuminance value may be lux.

[0251] The electronic device (100) can measure ambient illuminance using an illuminance sensor (151). The electronic device (100) can obtain analysis illuminance value information (1822) in a first section (p1) and a second section (p2).

[0252] The analysis illuminance value information (1822) may include at least one representative value.

[0253] For example, the representative value may include at least one of a minimum value, a maximum value, and an average value. For example, the average value may refer to the average value of all illuminance values ​​obtained during the illuminance measurement time.

[0254] For example, the representative value may include at least one of a minimum value, a maximum value, an average value, a minimum value of the first interval (p1), a maximum value of the first interval (p1), an average value of the first interval (p1), a minimum value of the second interval (p2), a maximum value of the second interval (p2), and an average value of the second interval (p2).

[0255] The embodiment (1830) of FIG. 18 illustrates a case where the space in which the electronic device (100) is placed is a dark room (dark space). A dark space may mean a space where the absolute illuminance value is below a critical illuminance.

[0256] The electronic device (100) can acquire basic illuminance value information (1831) corresponding to a dark space. The basic illuminance value information (1831) may include at least one of a reference illuminance value (100) sensed when a right eye image is output, a reference illuminance value (40) sensed when a left eye image is output, and an illuminance value around a dark room (0). The illuminance value around a dark room (0) can be acquired by the sensing operation of an illuminance sensor (151).

[0257] The electronic device (100) can measure ambient illuminance using an illuminance sensor (151). The electronic device (100) can obtain analysis illuminance value information (1832) in a first section (p1) and a second section (p2).

[0258] The analysis illuminance value information (1832) may include at least one representative value.

[0259] For example, the representative value may include at least one of a minimum value, a maximum value, and an average value. For example, the average value may refer to the average value of all illuminance values ​​obtained during the illuminance measurement time.

[0260] For example, the representative value may include at least one of a minimum value, a maximum value, an average value, a minimum value of the first interval (p1), a maximum value of the first interval (p1), an average value of the first interval (p1), a minimum value of the second interval (p2), a maximum value of the second interval (p2), and an average value of the second interval (p2).

[0261] In FIG. 18, the timing at which the left eye image is output and the timing at which the variable polarizing film (142) is controlled to a first state for x-axis polarization can be precisely matched (operating synchronously within threshold values ​​of requested time, frequency and / or other operating parameters). Thus, the minimum, maximum, and average values ​​of the first interval (p1) and the second interval (p2), respectively, can be matched.

[0262] FIG. 19 illustrates a situation where the timing of the output of the left eye image and the timing of the variable polarizing film (142) being controlled to a first state for x-axis polarization do not exactly match.

[0263] FIG. 19 is a diagram illustrating a situation in which a test image is output abnormally according to one or more embodiments.

[0264] The embodiment (1900) of FIG. 19 may correspond to the embodiment (1700) of FIG. 17. Duplicate or overlapping descriptions are omitted.

[0265] In the same manner as in the embodiment (1700) of FIG. 17, in the embodiment (1900) of FIG. 19, the electronic device (100) can alternately output a first test image and a second test image by controlling an image output module (141) based on first timing information. The electronic device (100) can alternately control a variable polarizing film (142) to a first state (x-axis polarization) or a second state (y-axis polarization) based on second timing information.

[0266] Second timing information can be generated based on first timing information. The electronic device (100) can obtain a third section based on a first section in which the first time is included in the information, and obtain a fourth section based on a second section included in the first timing information. The electronic device (100) can obtain second timing information including the third section and the fourth section. The third section may correspond to the first section. The fourth section may correspond to the second section.

[0267] However, depending on various causes, the switching timing of the test image and the state switching timing of the variable polarization film (142) may not match. This is because even if the timing information matches, the actual time at which the switching operation takes place differs due to the processing speed of executing the control command. For example, the timing may not match due to the difference in the switching processing speed of the image output module (141) and the variable polarization film (142).

[0268] If the timing is not matched, the output timing of the test image and the state of the variable polarization film (142) may be out of sync, as in the embodiment (1900) of FIG. 19. If the timing is out of sync, the x-axis polarization corresponding to the left eye image and the x-axis polarization corresponding to the right eye image may be sensed alternately.

[0269] Unlike the embodiment (1700) of FIG. 17, the x-axis polarization corresponding to the left eye image may be less sensed by the illuminance sensor (151). For example, when the left eye image has a dark background, the illuminance sensor (151) may sense a higher illuminance value compared to the embodiment (1700) of FIG. 17.

[0270] FIG. 20 is a drawing for explaining illuminance values ​​obtained in a situation where an image is output abnormally during a test, according to one or more embodiments.

[0271] The embodiment (2010) of FIG. 20 may correspond to the embodiment (1900) of FIG. 19. Duplicate or overlapping descriptions are omitted.

[0272] The embodiment (2020) of FIG. 20 illustrates a case where the space in which the electronic device (100) is placed is a bright space. A bright space may mean a space where the absolute illuminance value is greater than or equal to a critical illuminance.

[0273] The electronic device (100) can acquire basic illuminance value information (2021) corresponding to a bright space. The basic illuminance value information (2021) may include at least one of a reference illuminance value (100) sensed when a right eye image is output, a reference illuminance value (40) sensed when a left eye image is output, and an illuminance value around the light room (20). The illuminance value around the light room (20) can be acquired by the sensing operation of an illuminance sensor (151).

[0274] The electronic device (100) can measure ambient illuminance using an illuminance sensor (151). The electronic device (100) can obtain analysis illuminance value information (2022) in a first section (p1) and a second section (p2).

[0275] The analysis illuminance value information (2022) may include at least one representative value. An explanation regarding the representative value is described in FIGS. 18 and FIGS. 19.

[0276] The embodiment (2030) of FIG. 20 illustrates a case where the space in which the electronic device (100) is placed is a dark room (dark space). A dark space may mean a space where the absolute illuminance value is below a critical illuminance.

[0277] The electronic device (100) can acquire basic illuminance value information (2031) corresponding to a dark space. The basic illuminance value information (2031) may include at least one of a reference illuminance value (100) sensed when a right eye image is output, a reference illuminance value (40) sensed when a left eye image is output, and an illuminance value around a dark room (0). The illuminance value around a dark room (0) can be acquired by the sensing operation of an illuminance sensor (151).

[0278] The electronic device (100) can measure ambient illuminance using an illuminance sensor (151). The electronic device (100) can obtain analysis illuminance value information (2032) in a first section (p1) and a second section (p2).

[0279] The analysis illuminance value information (2032) may include at least one representative value. An explanation regarding the representative value is described in FIGS. 18 and FIGS. 19.

[0280] The representative illuminance value measured (or analyzed) in FIG. 20 may be higher than the representative illuminance value measured (or analyzed) in FIG. 18. This is because the x-axis polarization of the right eye image containing a bright background was sensed through some illuminance sensors (151). The electronic device (100) can perform a timing correction operation using these illuminance values.

[0281] FIG. 21 is a drawing for explaining the state of a variable polarizing film (142) according to one or more embodiments.

[0282] Referring to the embodiment (2100) of FIG. 21, the electronic device (100) can control a variable polarization film (142). The variable polarization film (142) may be a film for transmitting light directed in a specific direction.

[0283] The electronic device (100) can control the variable polarizing film (142) based on second timing information. The second timing information may include a third interval and a fourth interval. The second timing information may include a second period (or second pattern) in which the third interval and the fourth interval are repeated.

[0284] The electronic device (100) can control the variable polarization film (142) to a first state in the third section. The electronic device (100) can control the variable polarization film (142) to a second state in the fourth section.

[0285] The variable polarization film (142) can have polarization characteristics of various states.

[0286] For example, the first state may be x-axis polarized and the second state may be y-axis polarized.

[0287] For example, the first state may be y-axis polarized and the second state may be x-axis polarized.

[0288] For example, the first state may be clockwise polarization and the second state may be counterclockwise polarization.

[0289] For example, the first state may be counterclockwise polarization and the second state may be clockwise polarization.

[0290] FIG. 22 is a drawing for explaining the operation of providing a projected image by correcting the timing according to one or more embodiments.

[0291] Referring to FIG. 22, the electronic device (100) can provide a test image while controlling a variable polarizing film (142) (S2210).

[0292] After providing a test image, the electronic device (100) may perform timing correction (S2220). Timing correction may include correcting timing information used in the operation of outputting the image. Timing information may be described as period information, delay information, synchronization information, etc.

[0293] Timing correction may include an operation to correct at least one of the first timing information or the second timing information used in the operation of providing a test image.

[0294] After performing a correction operation, the electronic device (100) can provide a projection image while controlling the variable polarizing film (142) (S2230). The electronic device (100) can provide a projection image based on the final target timing obtained through the test image.

[0295] FIG. 23 is a drawing for explaining first timing information applied to an image output module (141) and second timing information applied to a variable polarizing film (142) according to one or more embodiments.

[0296] Referring to FIG. 23, the electronic device (100) can acquire a test image (S2310). The test image may include a first test image and a second test image. The first test image may represent a left eye image. The second test image may represent a right eye image.

[0297] The electronic device (100) can output a first test image and a second test image based on first timing information (S2320). The electronic device (100) can control a variable polarizing film (142) based on second timing information (S2330).

[0298] The electronic device (100) can correct the first timing information or the second timing information based on the illuminance value (S2340). The electronic device (100) can correct the timing for displaying the first test image and the second test image, or correct the timing for switching the state of the variable polarizing film (142).

[0299] The electronic device (100) can store the correction result. The electronic device (100) can provide a projection image based on the correction result (S2350). If correction is not required, the projection image can be provided without correction.

[0300] FIG. 24 is a diagram illustrating the operation of providing a projection image and controlling a variable polarizing film (142) by correcting timing based on an illuminance value group according to one or more embodiments.

[0301] Referring to FIG. 24, the electronic device (100) can acquire a first test image and a second test image (S2410). The electronic device (100) can acquire first timing information (S2420). The electronic device (100) can acquire first timing information for use in outputting the first test image and the second test image.

[0302] The electronic device (100) can obtain second timing information (S2430). The electronic device (100) can obtain second timing information for controlling the variable polarization film (142).

[0303] The electronic device (100) can output a first test image and a second test image based on first timing information (S2440). The electronic device (100) can output a first test image and a second test image based on first timing information through an image output module (141).

[0304] The electronic device (100) can control the variable polarization film (142) based on second timing information (S2450). The electronic device (100) can switch (or change) the state of the variable polarization film (142) based on second timing information. The variable polarization film (142) can be switched to a first state or a second state.

[0305] The electronic device (100) can acquire a group of illuminance values ​​while outputting a test image (S2460). The electronic device (100) can sense illuminance values ​​for the surrounding environment of the electronic device (100) through an illuminance sensor (151). The electronic device (100) can acquire a group of illuminance values ​​including multiple illuminance values. The group of illuminance values ​​may represent data units grouped according to a preset standard.

[0306] The electronic device (100) can determine timing correction based on a group of illuminance values ​​(S2470). The electronic device (100) can perform timing correction by analyzing a plurality of illuminance values ​​included in the group of illuminance values. The timing correction may include an operation to correct at least one of the first timing information or the second timing information.

[0307] The electronic device (100) can determine whether to correct the timing. After determining whether to correct the timing, the electronic device (100) can provide a projection image based on the result of the timing correction (S2480).

[0308] The electronic device (100) can control the variable polarization film (142) while providing a projected image (S2490).

[0309] FIG. 25 is a drawing for explaining the operation of outputting a test image according to one or more embodiments.

[0310] Referring to FIG. 25, the electronic device (100) can acquire a first test image and a second test image (S2505). The electronic device (100) can acquire first timing information including a first interval and a second interval (S2510).

[0311] The electronic device (100) can identify a first interval for outputting a first test image based on first timing information (S2515). The electronic device (100) can identify a second interval for outputting a second test image based on second timing information (S2520).

[0312] The electronic device (100) can obtain second timing information including a third section and a fourth section (S2525). The electronic device (100) can identify the third section based on the first section and identify the fourth section based on the second section. The electronic device (100) can generate second timing information including the third section and the fourth section.

[0313] The electronic device (100) can identify a third section for controlling the variable polarization film (142) in a first state based on second timing information (S2530). The electronic device (100) can identify a fourth section for controlling the variable polarization film (142) in a second state based on second timing information (S2535).

[0314] The electronic device (100) can output a first test image in a first interval and a second test image in a second interval based on first timing information (S2540).

[0315] The electronic device (100) can control the variable polarization film (142) in a first state in a third section based on second timing information, and control the variable polarization film (142) in a second state in a fourth section (S2545).

[0316] The electronic device (100) can perform an illuminance value analysis operation (#F1). An explanation related to this is shown in FIG. 26.

[0317] FIG. 26 is a drawing for explaining the operation of analyzing illuminance values ​​according to one or more embodiments.

[0318] Referring to FIG. 26, the electronic device (100) can perform an illuminance value analysis operation (#F1). The electronic device (100) can obtain an illuminance value based on light received through an illuminance sensor (151) and an illuminance polarizing film (152) (S2605).

[0319] The electronic device (100) can determine whether a threshold time has elapsed since the time when the illuminance value was first sensed (S2610). If the threshold time has not elapsed (S2610-N), the electronic device (100) can repeat the S2605 and S2610 operations. The threshold time may be changed according to the user's settings.

[0320] When a threshold time has elapsed from the point in time when the illuminance value is first sensed (S2610-Y), the electronic device (100) can acquire a first illuminance value group during the threshold time (S2615). The first illuminance value group may include a plurality of illuminance values.

[0321] The electronic device (100) can obtain a first representative value based on a first illuminance value group (S2620). For example, the first representative value may include at least one of an average value or a maximum value.

[0322] The electronic device (100) can identify whether the first representative value is less than the threshold value (S2625). The threshold value can be changed according to the user's settings.

[0323] For example, if the first representative value is the average value, the threshold value may be the first threshold value.

[0324] For example, if the first representative value is the maximum value, the threshold value may be the second threshold value. The second threshold value may be different from the first threshold value. The second threshold value may be greater than the first threshold value.

[0325] If the first representative value is greater than or equal to the threshold value (S2625-N), the electronic device (100) can perform a timing correction operation (#F2). An explanation related to this is provided in FIGS. 27 and FIGS. 28.

[0326] If the first representative value is less than the threshold value (S2625-Y), the electronic device (100) can determine the first timing information as the first target timing and the second timing information as the second target timing (S2635).

[0327] When the first target timing and the second target timing are determined, the electronic device (100) can store the first target timing and the second target timing. The electronic device (100) can provide a projection image based on the first target timing and the second target timing (#F3). An operation related to this is described in FIG. 29.

[0328] FIG. 27 is a drawing for explaining the operation of correcting timing according to one or more embodiments.

[0329] Referring to FIG. 27, the electronic device (100) can perform a timing correction operation (#F2). The electronic device (100) can obtain delay information (S2705). The delay information may include information for delaying the timing.

[0330] For example, the electronic device (100) can apply delay information to second timing information.

[0331] The electronic device (100) can output a first test image in a first interval and a second test image in a second interval based on first timing information (S2710).

[0332] The electronic device (100) can obtain third timing information by updating second timing information based on delay information (S2715).

[0333] The electronic device (100) can control the variable polarization film (142) in a first state in a third section based on third timing information, and control the variable polarization film (142) in a second state in a fourth section (S2720).

[0334] The electronic device (100) can obtain an illuminance value based on light received through an illuminance sensor (151) and an illuminance polarizing film (152) (S2725). The electronic device (100) can determine whether a threshold time has elapsed from the time of sensing by the operation of S2725 (S2730). The threshold time may be changed according to the user's settings.

[0335] If the critical time has not elapsed (S2730-N), the electronic device (100) can repeat the S2725 and S2730 operations.

[0336] When the threshold time has elapsed (S2730-Y), the electronic device (100) can acquire a second illuminance value group during the threshold time (S2735). The second illuminance value group may include a plurality of illuminance values.

[0337] The electronic device (100) can obtain a second representative value based on a second illuminance value group (S2740). For example, the second representative value may be an average value or a minimum value.

[0338] The electronic device (100) can identify whether the second representative value is less than the threshold value (S2745). The threshold value can be changed according to the user's settings.

[0339] For example, if the second representative value is the average value, the threshold value can be the first threshold value.

[0340] For example, if the second representative value is the maximum value, the threshold value may be the second threshold value. The second threshold value may be different from the first threshold value. The second threshold value may be greater than the first threshold value.

[0341] If the second representative value is greater than or equal to the threshold value (S2745-N), the electronic device (100) can repeat the S2705 to S2745 operations. The electronic device (100) can continue to correct the timing by changing the delay information.

[0342] If the second representative value is less than the threshold value (S2745-Y), the electronic device (100) can determine the first timing information as the first target timing and the third timing information as the second target timing (S2750).

[0343] The electronic device (100) can store a first target timing and a second target timing. The electronic device (100) can provide a projection image based on the first target timing and the second target timing (#F3). An explanation related to this is provided in FIG. 29.

[0344] FIG. 27 describes the operation of applying delay information to the second timing information. FIG. 28 explains the operation of applying delay information to the first timing information.

[0345] FIG. 28 is a drawing for explaining the operation of correcting timing according to one or more embodiments.

[0346] Referring to FIG. 28, the electronic device (100) can perform a timing correction operation (#F2). The electronic device (100) can obtain delay information (S2805). The delay information may include information for delaying the timing.

[0347] For example, the electronic device (100) can apply delay information to the first timing information.

[0348] The electronic device (100) can obtain fourth timing information by updating first timing information based on delay information (S2810).

[0349] The electronic device (100) can output a first test image in the first interval and a second test image in the second interval based on the fourth timing information (S2815).

[0350] The electronic device (100) can control the variable polarization film (142) in a first state in a third section based on second timing information, and control the variable polarization film (142) in a second state in a fourth section (S2820).

[0351] The electronic device (100) can obtain an illuminance value based on light received through an illuminance sensor (151) and an illuminance polarizing film (152) (S2825). The electronic device (100) can determine whether a threshold time has elapsed from the time of sensing by the operation of S2825 (S2830). The threshold time may be changed according to the user's settings.

[0352] If the critical time has not elapsed (S2830-N), the electronic device (100) can repeat the S2825 and S2830 operations.

[0353] When the critical time has elapsed (S2830-Y), the electronic device (100) can acquire a third illuminance value group during the critical time (S2835). The third illuminance value group may include a plurality of illuminance values.

[0354] The electronic device (100) can obtain a third representative value based on a third illuminance value group (S2840). For example, the third representative value may be an average value or a minimum value.

[0355] The electronic device (100) can identify whether the third representative value is less than the threshold value (S2845). The threshold value can be changed according to the user's settings.

[0356] For example, if the third representative value is the average value, the threshold value can be the first threshold value.

[0357] For example, if the third representative value is the maximum value, the threshold value may be the second threshold value. The second threshold value may be different from the first threshold value. The second threshold value may be greater than the first threshold value.

[0358] If the third representative value is greater than or equal to the threshold value (S2845-N), the electronic device (100) can repeat operations S2805 through S2845. The electronic device (100) can continue to correct the timing by changing the delay information.

[0359] If the third representative value is less than the threshold value (S2845-Y), the electronic device (100) can determine the fourth timing information as the first target timing and the second timing information as the second target timing (S2850).

[0360] The electronic device (100) can store a first target timing and a second target timing. The electronic device (100) can provide a projection image based on the first target timing and the second target timing (#F3). An explanation related to this is provided in FIG. 29.

[0361] In FIGS. 26 to 28, it is assumed that the illuminance polarizing film (152) is an x-axis polarizing film. If the illuminance polarizing film (152) is a y-axis polarizing film, it is possible to determine whether the representative value exceeds a threshold value. Only when the representative value exceeds the threshold value can the existing timing information be determined as the target timing. This is because if the illuminance polarizing film (152) is a y-axis polarizing film, the y-axis polarization corresponding to the relatively bright second test image is sensed by the illuminance sensor (151).

[0362] FIG. 29 is a drawing for explaining the operation of providing a projection image according to one or more embodiments.

[0363] Referring to FIG. 29, the electronic device (100) can perform an operation (#F3) of providing a projected image. The electronic device (100) can store a first target timing and a second target timing.

[0364] The electronic device (100) can acquire a first projection image and a second projection image (S2905). For example, the first projection image may be a left eye image and the second projection image may be a right eye image. The projection images may be images for providing a 3D effect.

[0365] The electronic device (100) can obtain a first target timing including a first interval and a second interval (S2910).

[0366] The electronic device (100) can identify a first interval for outputting a first projection image based on the first target timing (S2915).

[0367] The electronic device (100) can identify a second interval for outputting a second projection image based on the first target timing (S2925).

[0368] The electronic device (100) can obtain a second target timing including a third interval and a fourth interval (S2925).

[0369] The electronic device (100) can identify a third interval for controlling the variable polarization film (142) to a first state based on the second target timing (S2930).

[0370] The electronic device (100) can identify a fourth interval for controlling the variable polarization film (142) to a second state based on the second target timing (S2935).

[0371] The electronic device (100) can output a first projection image in a first interval and a second projection image in a second interval based on the first target timing (S2940).

[0372] The electronic device (100) can control the variable polarization film (142) in a first state in a third section based on the second target timing, and control the variable polarization film (142) in a second state in a fourth section (S2945).

[0373] While the variable polarizing film (142) is in the first state, the electronic device (100) can output a first projection image. While the variable polarizing film (142) is in the second state, the electronic device (100) can output a second projection image.

[0374] FIG. 30 is a drawing for explaining a method of controlling an electronic device (100) according to one or more embodiments.

[0375] Referring to FIG. 30, a control method for an electronic device including a variable polarizing film and an illuminance sensor may include the steps of: acquiring first timing information for displaying a first test image and a second test image (S3010); acquiring second timing information for controlling a state change of the variable polarizing film based on the first timing information (S3020); alternately outputting the first test image and the second test image based on the first timing information through an image output module (S3030); alternately changing the variable polarizing film to a first state for transmitting light in a first direction or a second state for transmitting light in a second direction based on the second timing information (S3040); acquiring a first illuminance value group including a plurality of illuminance values ​​through an illuminance sensor while the first test image or the second test image is being output (S3050); and determining whether to correct one of the first timing information or the second timing information based on the first illuminance value group (S3060).

[0376] The first test image may be a left-eye image for 3D effects, and the second test image may be a right-eye image for 3D effects.

[0377] The first test image may include a background of a first color, and the second test image may include a background of a second color that is brighter than the first color.

[0378] The first state is a state for transmitting light in a first direction, and the second state may be a state for transmitting light in a second direction different from the first direction.

[0379] The first state is a state for transmitting x-axis polarization, and the second state may be a state for transmitting y-axis polarization.

[0380] The step of outputting a first test image and a second test image (S3030) can output a first test image based on the first timing information through an image output module while the variable polarizing film is controlled to a first state based on the second timing information, and output a second test image based on the first timing information through an image output module while the variable polarizing film is controlled to a second state based on the second timing information.

[0381] The step of determining whether to correct (S3060) includes obtaining a first representative value based on a first illuminance value group, and if the first representative value is less than a threshold value, determining first timing information as a first target timing and determining second timing information as a second target timing, and the control method includes the step of outputting a projection image based on the first target timing and the second target timing through an image output module, and the first representative value may be one of a maximum value or an average value.

[0382] The step of determining whether to correct (S3060) can acquire delay information if the first representative value is greater than or equal to a threshold value, acquire third timing information by reflecting the delay information in the second timing information, and alternately change the variable polarizing film to a first state or a second state based on the third timing information.

[0383] The step of determining whether to correct (S3060) can, while controlling a variable polarizing film based on third timing information, obtain a second illuminance value group including a plurality of illuminance values ​​through an illuminance sensor, obtain a second representative value based on the second illuminance value group, and if the second representative value is less than a threshold value, determine the first timing information as the first target timing and determine the third timing information as the second target timing.

[0384] The illuminance sensor may be a sensor that senses an illuminance value based on light transmitted through an illuminance polarizing film for transmitting light in a first direction.

[0385] The methods according to the various embodiments of the present disclosure described above can be implemented in the form of an application that can be installed on an existing electronic device.

[0386] The methods according to the various embodiments of the present disclosure described above can be implemented by software upgrades or hardware upgrades alone for existing electronic devices.

[0387] The various embodiments of the present disclosure described above may also be performed through an embedded server equipped in an electronic device, or through an external server among at least one of the electronic device and the display device.

[0388] According to a specific example of the present disclosure, the various embodiments described above may be implemented as software comprising instructions stored on a machine-readable storage medium (e.g., a computer). The machine may include an electronic device according to the disclosed embodiments, which is a device capable of calling instructions stored from the storage medium and operating according to the called instructions. When instructions are executed by a processor, the processor may perform a function corresponding to the instructions directly or by using other components under the control of the processor. Instructions may include code generated or executed by a compiler or an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, "non-transitory" means only that the storage medium does not contain a signal and is tangible, and does not distinguish whether data is stored semi-permanently or temporarily in the storage medium.

[0389] According to one or more embodiments 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 between a seller and a buyer as a product. The computer program product may be distributed in the form of a device-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 created in a storage medium such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0390] Each component (e.g., module or program) according to one or more of the embodiments described above may be composed of a single or multiple entities, and some of the aforementioned sub-components may be omitted, or other sub-components may be further included in various embodiments. Generally or additionally, some components (e.g., module or program) may be integrated into a single entity to perform the same or similar functions as those performed by each of the respective components prior to integration. The operations performed by the module, program, 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 added.

[0391] Although one or more preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above. It is understood that various modifications can be made by those skilled in the art without departing from the scope of the present disclosure as claimed in the claims, and such modifications should not be understood individually from the technical spirit of the present disclosure.

Claims

1. In an electronic device, Memory for storing instructions; At least one processor including processing circuitry; Image output module; Variable polarization film; and Includes an illuminance sensor; When the above instructions are executed individually or collectively by the at least one processor, the electronic device, Acquire first timing information for displaying a first test image and a second test image, and Based on the first timing information above, second timing information for controlling the state change of the variable polarization film is obtained, and Through the image output module above, the first test image and the second test image are alternately output based on the first timing information, and Based on the second timing information above, the variable polarizing film is alternately changed to a first state for transmitting light directed in a first direction or a second state for transmitting light directed in a second direction, and While the first test image or the second test image is being output, a first illuminance value group including a plurality of illuminance values ​​is obtained through the illuminance sensor, and An electronic device that determines whether to correct one of the first timing information or the second timing information based on the first illuminance value group.

2. In Paragraph 1, The above first test image is a left-eye image for 3D effects, and The electronic device, wherein the second test image above is a right eye image for the 3D effect.

3. In Paragraph 2, The above first test image includes a background of a first color, and The above second test image is an electronic device comprising a background of a second color that is brighter than the first color.

4. In Paragraph 1, The above first state is a state for transmitting light directed in a first direction, and The above second state is an electronic device for transmitting light directed in a second direction different from the above first direction.

5. In Paragraph 4, The above first state is a state for transmitting x-axis polarization, and An electronic device, wherein the second state above is a state for transmitting y-axis polarized light.

6. In Paragraph 4, When the above instructions are executed individually or collectively by the at least one processor, the electronic device, While the variable polarizing film is controlled to the first state based on the second timing information, the first test image is output through the image output module based on the first timing information, and An electronic device that outputs the second test image based on the first timing information through the image output module while the variable polarizing film is controlled to the second state based on the second timing information.

7. In Paragraph 1, When the above instructions are executed individually or collectively by the at least one processor, the electronic device, A first representative value is obtained based on the above first illuminance value group, and If the above first representative value is less than the threshold value, the above first timing information is determined as the first target timing and the above second timing information is determined as the second target timing, and Through the image output module above, a projection image is output based on the first target timing and the second target timing, and The above first representative value is, An electronic device that is either a maximum value or an average value.

8. In Paragraph 7, When the above instructions are executed individually or collectively by the at least one processor, the electronic device, If the above first representative value is greater than or equal to a threshold value, delay information is obtained, and By updating the second timing information based on the above delay information, the third timing information is obtained, and An electronic device that alternately changes the variable polarizing film to the first state or the second state based on the third timing information.

9. In Paragraph 8, When the above instructions are executed individually or collectively by the at least one processor, the electronic device, While controlling the variable polarizing film based on the third timing information above, a second illuminance value group including a plurality of illuminance values ​​is obtained through the illuminance sensor, and A second representative value is obtained based on the above second illuminance value group, and An electronic device that, if the second representative value is less than a threshold value, determines the first timing information as the first target timing and determines the third timing information as the second target timing.

10. In Paragraph 1, The above illuminance sensor is an electronic device that senses an illuminance value based on light transmitted through an illuminance polarizing film for transmitting light directed in the first direction.

11. A method for controlling an electronic device comprising a variable polarizing film, an illuminance sensor, and an image output module, wherein A step of obtaining first timing information for displaying a first test image and a second test image; A step of obtaining second timing information for controlling the state change of the variable polarization film based on the first timing information; A step of alternately outputting the first test image and the second test image based on the first timing information through the image output module; A step of alternately changing the variable polarizing film to a first state for transmitting light directed in a first direction or a second state for transmitting light directed in a second direction based on the second timing information; A step of obtaining a first illuminance value group including a plurality of illuminance values ​​through the illuminance sensor while the first test image or the second test image is output; and A control method comprising: a step of determining whether to correct one of the first timing information or the second timing information based on the first illuminance value group.

12. In Paragraph 11, The above first test image is a left-eye image for 3D effects, and A control method in which the second test image above is a right eye image for the 3D effect.

13. In Paragraph 12, The above first test image includes a background of a first color, and A control method in which the second test image above includes a background of a second color brighter than the first color.

14. In Paragraph 11, The above first state is a state for transmitting light directed in a first direction, and A control method in which the above second state is a state for transmitting light directed in a second direction different from the above first direction.

15. In Paragraph 14, The above first state is a state for transmitting x-axis polarization, and A control method in which the second state above is a state for transmitting y-axis polarization.

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