Projection device, control method, controller and storage medium

Abstract

The present application provides a projection device, a control method, a controller and a storage medium, and belongs to the technical field of projection audio settings. The projection device includes: a controller and multiple speakers, any speaker is used to generate a secondary sound source on the projection surface corresponding to the projection device; the controller is used to obtain the spacing distance between the projection device and the projection surface; the projection surface is divided into multiple projection areas based on the number of speakers, and the center point positions of the multiple projection areas are determined; the target angle to be rotated of each speaker is determined according to the spacing distance and the center point positions of the multiple projection areas, and each speaker is controlled to rotate to its corresponding target angle, so that the position of the secondary sound source generated by each speaker matches the center point position of the multiple projection areas. The present application can improve the user's audio and video experience.

Description

Technical Field

[0001] The present application relates to the technical field of projection audio settings, and in particular to a projection device, a control method, a controller and a storage medium. Background Art

[0002] While projecting images, the projection device will also emit corresponding sounds through the built-in audio system, thereby achieving synchronous display of sound and images.

[0003] In the prior art, the speakers in the projection device are usually fixedly arranged, for example, fixed forward or fixed to the sides. Due to the limited external size of the projection device itself, the distance between the two speakers is very close. The speakers arranged in this way will result in poor stereo sound, and the sound and picture are separated.

[0004] This results in the user usually hearing poor stereo effects and separation of sound and picture when using the projection device, which affects the user's audio and picture experience. Summary of the invention

[0005] The purpose of this application is to provide a projection device, a control method, a controller and a storage medium, which can improve the user's audio and video experience.

[0006] The embodiment of the present application is implemented as follows:

[0007] In one aspect of an embodiment of the present application, a projection device is provided, comprising: a controller and a plurality of speakers, wherein any speaker is used to generate a secondary sound source on a projection surface corresponding to the projection device;

[0008] The controller is used to obtain the spacing distance between the projection device and the projection surface; divide the projection surface into multiple projection areas based on the number of speakers, and determine the center point positions of the multiple projection areas; determine the target angle to be rotated of each speaker according to the spacing distance and the center point positions of the multiple projection areas, and control each speaker to rotate to its corresponding target angle so that the position of the secondary sound source generated by each speaker matches the center point position of the multiple projection areas.

[0009] Optionally, any speaker is arranged at a first preset angle in a horizontal direction toward the projection plane; any speaker is arranged at a second preset angle in a vertical direction toward the projection plane; and any speaker is arranged tilted outward toward the projection plane.

[0010] Optionally, the plurality of speakers include: a first speaker and a second speaker, the first speaker and the second speaker are symmetrically arranged relative to the optical machine lens of the projection device; the projection surface includes a first projection sub-area and a second projection sub-area;

[0011] The first speaker is used to generate a secondary sound source in the first projection sub-area; the second speaker is used to generate a secondary sound source in the second projection sub-area.

[0012] Optionally, the device further comprises: a first motor and a second motor, the first motor is connected to the first speaker, the second motor is connected to the second speaker, and the first motor and the second motor are also connected to the controller respectively;

[0013] a controller, configured to determine a first target angle value for the first speaker to be rotated and a second target angle value for the second speaker to be rotated according to the interval distance, and to send a first control instruction to the first motor based on the first target angle value and to send a second control instruction to the second motor based on the second target angle value;

[0014] a first motor, configured to rotate the first speaker to a first target angle based on a first control instruction;

[0015] The second motor is used to rotate the second speaker to a second target angle based on the second control instruction.

[0016] Another aspect of an embodiment of the present application provides a method for controlling a projection device, the method being applied to a controller of the projection device, the method comprising:

[0017] Get the distance between the projection device and the projection surface;

[0018] Divide the projection surface into multiple projection areas based on the number of speakers, and determine the center points of the multiple projection areas;

[0019] The target angle to be rotated of each speaker is determined according to the spacing distance and the center point positions of the multiple projection areas, and each speaker is controlled to rotate to its corresponding target angle so that the position of the secondary sound source generated by each speaker matches the center point positions of the multiple projection areas.

[0020] Optionally, determining a target angle for each speaker to be rotated according to the interval distance and the center point positions of the plurality of projection areas includes:

[0021] Determine a first target angle value for each speaker to be rotated in the horizontal direction according to the interval distance and the center point positions of the plurality of projection areas;

[0022] A second target angle value to be rotated in the vertical direction for each speaker is determined according to the interval distance and the center point positions of the plurality of projection areas.

[0023] Optionally, determining a first target angle value for each speaker to be rotated in the horizontal direction according to the interval distance and the center point positions of the plurality of projection areas includes:

[0024] Determine first parameter information based on the center point positions of the plurality of projection areas, the first parameter information including: the length of the projection image and the preset horizontal distance of each speaker relative to the optical machine lens of the projection device;

[0025] A first target angle value to be rotated in the horizontal direction for each speaker is determined based on the interval distance and the first parameter information.

[0026] Optionally, determining a second target angle value for each speaker to be rotated in the vertical direction according to the interval distance and the center point positions of the plurality of projection areas includes:

[0027] Determine second parameter information based on the center point positions of the plurality of projection areas, the second parameter information comprising: the height of the projection screen and the height difference of each speaker relative to the upper edge of the projection screen;

[0028] A second target angle value to be rotated in the vertical direction for each speaker is determined based on the interval distance and the second parameter information.

[0029] Another aspect of an embodiment of the present application provides a control device for a projection device, the device being applied to a controller of the projection device, the device comprising: an acquisition module, a determination module and a control module;

[0030] An acquisition module is used to acquire the distance between the projection device and the projection surface;

[0031] A determination module, used to divide the projection surface into multiple projection areas based on the number of speakers, and determine the center point positions of the multiple projection areas;

[0032] The control module is used to determine the target angle to be rotated of each speaker according to the interval distance and the center point positions of the multiple projection areas, and control each speaker to rotate to its corresponding target angle so that the position of the secondary sound source generated by each speaker matches the center point positions of the multiple projection areas.

[0033] Optionally, the control module is specifically used to determine a first target angle value for each speaker to be rotated in the horizontal direction according to the spacing distance and the center point positions of the multiple projection areas; and to determine a second target angle value for each speaker to be rotated in the vertical direction according to the spacing distance and the center point positions of the multiple projection areas.

[0034] Optionally, the control module is specifically used to determine first parameter information based on the center point positions of multiple projection areas, the first parameter information including: the length of the projected image and the preset horizontal distance of each speaker relative to the optical lens of the projection device; based on the interval distance and the first parameter information, determine the first target angle value to be rotated in the horizontal direction for each speaker.

[0035] Optionally, the control module is specifically used to determine the second parameter information based on the center point positions of multiple projection areas, the first parameter information including: the height of the projection screen and the height difference of each speaker relative to the upper edge of the projection screen; based on the interval distance and the second parameter information, determine the second target angle value of each speaker to be rotated in the vertical direction.

[0036] Another aspect of an embodiment of the present application provides a controller including: a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the computer program, the steps of the control method of the above-mentioned projection device are implemented.

[0037] In another aspect of an embodiment of the present application, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the control method of the projection device are implemented.

[0038] The beneficial effects of the embodiments of the present application include:

[0039] In the projection device, control method, controller and storage medium provided in the embodiments of the present application, the controller can obtain the interval distance between the projection device and the projection surface, divide the projection surface into multiple projection areas based on the number of speakers, and determine the center point positions of the multiple projection areas. The target angle to be rotated of each speaker can be determined based on the interval distance and the center point positions of the multiple projection areas, and each speaker can be controlled to rotate to its corresponding target angle, so that the position of the secondary sound source generated by each speaker matches the center point position of the multiple projection areas. After determining the position of the secondary sound source, audio can be projected to the position of the secondary sound source while projecting, so that the user can feel that the sound is emitted from the secondary sound source while watching the picture projected by the projection device, giving the user a unified audio and video experience effect; at the same time, the distance of the secondary sound source on the video screen is much greater than the distance of the speakers on the whole machine, and the virtual increase in the sound source distance improves the stereo effect of the whole machine, significantly improving the user's audio and video experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A schematic diagram of the structure of the projection device provided in the embodiment of the present application Figure 1 ;

[0042] Figure 2A schematic diagram of the structure of the projection device provided in the embodiment of the present application Figure 2 ;

[0043] Figure 3 A schematic diagram of the structure of the projection device provided in the embodiment of the present application Figure 3 ;

[0044] Figure 4 Schematic diagram of the control method of the projection device provided in the embodiment of the present application Figure 1 ;

[0045] Figure 5 Schematic diagram of the control method of the projection device provided in the embodiment of the present application Figure 2 ;

[0046] Figure 6 Schematic diagram of the control method of the projection device provided in the embodiment of the present application Figure 3 ;

[0047] Figure 7 Schematic diagram of the control method of the projection device provided in the embodiment of the present application Figure 4 ;

[0048] Figure 8 A schematic diagram of the structure of a controller provided in an embodiment of the present application. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0050] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0051] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0052] In the description of the present application, it should be noted that the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0053] The specific structure of the projection device provided in the embodiments of the present application and the application scenarios involved are explained in detail below.

[0054] Figure 1 A schematic diagram of the structure of the projection device provided in the embodiment of the present application Figure 1 , please refer to Figure 1 The projection device includes: a controller 110 and a plurality of speakers 120, any speaker 120 is used to generate a secondary sound source on a projection surface 130 corresponding to the projection device; the controller 110 is used to obtain the interval distance between the projection device and the projection surface 130; the projection surface is divided into a plurality of projection areas based on the number of speakers 120, and the center point positions of the plurality of projection areas are determined; the target angle to be rotated of each speaker 120 is determined according to the interval distance and the center point positions of the plurality of projection areas, and each speaker is controlled to rotate to its corresponding target angle, so that the position of the secondary sound source generated by each speaker 120 matches the center point positions of the plurality of projection areas.

[0055] Optionally, the controller 110 can specifically be a control chip or control device arranged in the projection device, for example, it can be a microcontroller unit (MUC) or a central processing unit (CPU). It can be specifically configured according to the actual needs of the projection device, and no specific structural limitation is made here.

[0056] Optionally, the speaker 120 may be any type of audio playback device, such as a speaker, a sound box, etc., and is not specifically limited here, as long as it can play audio signals.

[0057] Optionally, the controller 110 and the speaker 120 can be integrated into one body. For example, the controller 110 and multiple speakers 120 can be separately loaded on the box of the projection device. During use, the projection device can be placed opposite the projection surface 130. The projection surface 130 can be a wall, a screen or any area that can display the projection image. There is no specific limitation here.

[0058] Optionally, the projection surface 130 may be divided into a plurality of projection areas based on the number of speakers 120. For example, if two speakers 120 are included, the projection surface 130 may be divided into two projection areas; if four speakers 120 are included, the projection surface 130 may be divided into four projection areas. The number of speakers 120 may correspond to the number of projection areas. One speaker 120 may correspond to one projection area, or multiple speakers 120 may correspond to one projection area, which is not limited here.

[0059] Optionally, each projection area can be divided into a rectangle, and the center point position of the projection area is the physical center point of the rectangle. The target angle to be rotated for each speaker 120 can be determined according to the multiple center point positions of the projection device and the projection surface 130. For example, the target angle to be rotated can be the angle rotated by the speaker to the corresponding center point position.

[0060] Optionally, after determining the target angle to which the speaker 120 is to be rotated, each speaker may be controlled to rotate according to its own target angle, so that when the speaker emits an audio signal, a reflection of the audio signal may be generated at the center point, thereby generating a corresponding secondary sound source.

[0061] In the projection device provided in the embodiment of the present application, the controller can be used to obtain the interval distance between the projection device and the projection surface, and the projection surface can be evenly divided into multiple projection areas based on the number of speakers, and the center point positions of the multiple projection areas can be determined. The target angle to be rotated of each speaker can be determined based on the interval distance and the center point positions of the multiple projection areas, and each speaker can be controlled to rotate to its corresponding target angle, so that the position of the secondary sound source generated by each speaker matches the center point position of the multiple projection areas. Among them, after determining the position of the secondary sound source, audio can be projected to the position of the secondary sound source while projecting, so that the user can feel that the sound is emitted from the secondary sound source while watching the picture projected by the projection device, giving the user a unified audio and video experience effect; at the same time, the distance of the secondary sound source on the video screen is much greater than the distance of the speakers on the whole machine, and the virtual increase in the sound source distance improves the stereo effect of the whole machine, significantly improving the user's audio and video experience.

[0062] The following is a detailed explanation of the initial setting positions of the angles of each speaker in the projection device provided in the embodiment of the present application.

[0063] Figure 2 A schematic diagram of the structure of the projection device provided in the embodiment of the present application Figure 2 , please refer to Figure 2 , any speaker 120 is arranged at a second preset angle in a vertical direction toward the projection surface 130 ; any speaker 120 is arranged tilted outward toward the projection surface 130 .

[0064] Optionally, in combination with the aforementioned Figure 1 , any speaker 120 is arranged at a first preset angle in a horizontal direction toward the projection surface 130.

[0065] Optionally, the speaker 120 can be set at a certain preset angle, for example: at a certain preset distance (the distance between the projection device and the projection surface), so that at the preset distance, when each speaker 120 is facing the corresponding center position point, the angle in the horizontal direction and the vertical direction.

[0066] Optionally, the first preset angle and the second preset angle may be different according to different preset distances, and no specific numerical limitation is imposed herein.

[0067] Optionally, each speaker can be arranged to tilt outwards toward the projection surface, wherein tilting outwards specifically means: for the speaker arranged on the left side of the projection device, its direction is also left; for the speaker arranged on the right side of the projection device, its direction is also right.

[0068] For example, if two speakers are included, where the first speaker is arranged on the left side of the projection device and the second speaker is arranged on the right side of the projection device, the first speaker can be tilted to the left toward the projection surface, and the second speaker can be tilted to the right toward the projection surface.

[0069] In the projection device provided in the embodiment of the present application, the initial angle setting of the speaker can be performed to facilitate user use, and by tilting the speaker outward, adjustment relative to the center point position can be achieved more quickly, thereby improving adjustment efficiency.

[0070] The specific implementation process when there are two groups of speakers in the projection device provided in the embodiment of the present application is explained in detail below.

[0071] Figure 3 A schematic diagram of the structure of the projection device provided in the embodiment of the present application Figure 3 , please refer to Figure 3 The multiple speakers include: a first speaker 121 and a second speaker 122, and the first speaker 121 and the second speaker 122 are symmetrically arranged relative to the optical lens of the projection device; the projection surface includes a first projection sub-area 131 and a second projection sub-area 132; the first speaker 121 is used to generate a secondary sound source in the first projection sub-area 131; the second speaker 122 is used to generate a secondary sound source in the second projection sub-area 132.

[0072] Optionally, the first speaker 121 and the second speaker 122 can each be a speaker, or a group of speakers (for example, two speakers as a group). The first speaker 121 can be set on the left side (or right side) of the projection device, and the second speaker 122 can be set on the right side (or left side) of the projection device. The optical lens of the projection device can be a lens for sending projection light, which can project the image to be projected onto the projection surface. The optical lens can be set at the center position of the projection device relative to the projection surface, and the first speaker 121 and the second speaker 122 can be symmetrical based on the optical lens.

[0073] Optionally, the first projection sub-area 131 and the second projection sub-area 132 can be two areas horizontally set on the projection surface, and the two areas can be equal in size. For example, the entire projection surface can be horizontally divided into two rectangular areas according to the central symmetry line. The area on the left side (or right side) can be set as the first projection sub-area 131, and the area on the right side (or left side) can be set as the second projection sub-area 132.

[0074] Optionally, the first speaker 121 may be used to generate a secondary sound source at a center point of the first projection sub-area 131 ; the second speaker 122 may be used to generate a secondary sound source at a center point of the second projection sub-area 132 .

[0075] In the projection device provided by the embodiment of the present application, after the audio signals emitted by the first speaker and the second speaker are transmitted to the center point of the corresponding first projection sub-area and the center point of the second projection sub-area, two secondary sound sources can be generated at the center point of the first projection sub-area and the center point of the second projection sub-area respectively. Since the first speaker and the second speaker are arranged at an angle, the distance between the positions of the two secondary sound sources determined after transmission over a certain distance is much greater than the distance between the first speaker and the second speaker, thereby increasing the distance of the sound source emitting the audio signal, improving the stereoscopic sense during audio playback, and optimizing the overall effect of the sound field.

[0076] Optionally, the device also includes: a first motor 141 and a second motor 142, the first motor 141 is connected to the first speaker 121, the second motor 142 is connected to the second speaker 122, and the first motor 141 and the second motor 142 are also respectively connected to the controller 110; the controller 110 is used to determine the first target angle value to be rotated of the first speaker 121 and the second target angle value to be rotated of the second speaker 122 according to the interval distance, and send a first control instruction to the first motor 141 based on the first target angle value and send a second control instruction to the second motor 142 based on the second target angle value; the first motor 141 is used to rotate the first speaker 121 to the first target angle based on the first control instruction; the second motor 142 is used to rotate the second speaker 122 to the second target angle based on the second control instruction.

[0077] Optionally, both the first motor 141 and the second motor 142 may be stepper motors.

[0078] Optionally, the first target rotation angle and the second target rotation angle may both include an angle in the vertical direction and an angle in the horizontal direction. When the first speaker 121 rotates to the first target rotation angle, it can generate a secondary sound source at the center point of the first projection sub-area 131; when the second speaker 122 rotates to the second target rotation angle, it can generate a secondary sound source at the center point of the second projection sub-area 132.

[0079] Optionally, after receiving a first control instruction, the first motor 141 can control the first speaker 121 to rotate to a first target rotation angle based on the instruction; after receiving a second control instruction, the second motor 142 can control the second speaker 121 to rotate to a second target rotation angle based on the instruction.

[0080] The specific implementation process of the control method of the projection device provided in the embodiment of the present application is explained in detail below.

[0081] Figure 4 Schematic diagram of the control method of the projection device provided in the embodiment of the present application Figure 1 , please refer to Figure 4 , the method is applied to a controller of a projection device, the method comprising:

[0082] S410: Obtaining the distance between the projection device and the projection surface.

[0083] Optionally, the distance between the projection device and the projection surface can be obtained by a distance measuring device in the optical machine lens of the projection device, which can specifically be a lens with TOF (Time-of-Flight, laser flight time calculation) function.

[0084] S420: Divide the projection surface into a plurality of projection areas based on the number of speakers, and determine the positions of the center points of the plurality of projection areas.

[0085] S430: Determine the target angle to be rotated of each speaker according to the interval distance and the center point positions of the multiple projection areas, and control each speaker to rotate to its corresponding target angle so that the position of the secondary sound source generated by each speaker matches the center point positions of the multiple projection areas.

[0086] Optionally, the specific process of S420-S430 has been explained in the above-mentioned embodiment and will not be repeated here.

[0087] Another specific implementation process of the control method of the projection device provided in the embodiment of the present application is explained in detail below.

[0088] Figure 5 Schematic diagram of the control method of the projection device provided in the embodiment of the present application Figure 2 , please refer to Figure 5, determining the target angle of each speaker to be rotated according to the interval distance and the center point positions of the multiple projection areas, including:

[0089] S510: Determine a first target angle value for each speaker to be rotated in the horizontal direction according to the interval distance and the center point positions of the plurality of projection areas.

[0090] S520: Determine a second target angle value for each speaker to be rotated in the vertical direction according to the interval distance and the center point positions of the plurality of projection areas.

[0091] Optionally, the specific execution process of the above S510 and S520 may be performed simultaneously or sequentially. When performed sequentially, S510 may be performed first or S520 may be performed first. Figure 5 In the example, S510 is executed first and then S520 is executed, but the present invention is not limited thereto.

[0092] Another specific implementation process of the control method of the projection device provided in the embodiment of the present application is explained in detail below.

[0093] Figure 6 Schematic diagram of the control method of the projection device provided in the embodiment of the present application Figure 3 , please refer to Figure 6 , determining a first target angle value to be rotated in the horizontal direction for each speaker according to the interval distance and the center point positions of the plurality of projection areas, including:

[0094] S610: Determine first parameter information based on the center point positions of multiple projection areas.

[0095] The first parameter information includes: the length of the projected image and the preset horizontal distance of each loudspeaker relative to the optical machine lens of the projection device.

[0096] Optionally, the length of the projected image may be calculated based on a preset transmittance ratio and a spacing distance, wherein the spacing distance is the distance from the projection device to the projection surface, and the transmittance ratio may be a parameter preset in the projection device.

[0097] Optionally, the horizontal distance between each speaker and the optical machine lens of the projection device may be a known parameter when the projection device leaves the factory.

[0098] S620: Determine a first target angle value for each speaker to be rotated in the horizontal direction based on the interval distance and the first parameter information.

[0099] Optionally, a specific calculation formula for the first target angle value to be rotated in the horizontal direction of each speaker is as follows:

[0100]

[0101] Wherein, L is the length of the projected image, d1 is the horizontal distance of each speaker relative to the optical lens of the projection device, and D is the spacing distance.

[0102] Optionally, please refer to Figure 3 The specific positions of the parameters involved in the above calculation formula marked in the actual application scenario of the projection device.

[0103] Another specific implementation process of the control method of the projection device provided in the embodiment of the present application is explained in detail below.

[0104] Figure 7 Schematic diagram of the control method of the projection device provided in the embodiment of the present application Figure 4 , please refer to Figure 7 , determining a second target angle value for each speaker to be rotated in the vertical direction according to the interval distance and the center point positions of the plurality of projection areas, including:

[0105] S710: Determine second parameter information based on the center point positions of multiple projection areas.

[0106] The second parameter information includes: the height of the projected image and the height difference of each speaker relative to the upper edge of the projected image.

[0107] Optionally, the height of the projected image can be calculated based on a preset transmittance and spacing distance.

[0108] Optionally, the height difference of each speaker relative to the upper edge of the projected picture can be calculated by the height position of the picture and the height position of the speaker. The height position of the picture can be obtained by calculating the preset transmittance ratio and the interval distance, and can be specifically the height of the entire projection picture, that is, the distance from the top to the bottom of the projection picture. The height position of the speaker can be the relative height position of the speaker and the optical machine lens, and can be specifically a known parameter when the projection equipment leaves the factory.

[0109] S720: Determine a second target angle value for each speaker to be rotated in the vertical direction based on the interval distance and the second parameter information.

[0110] Optionally, a specific calculation formula for the second target angle value to be rotated in the vertical direction of each speaker is as follows:

[0111]

[0112] Wherein, H is the height of the projected image, d2 is the height difference of each speaker relative to the upper edge of the projected image, and D is the spacing distance.

[0113] Optionally, please refer to Figure 2The specific positions of the parameters involved in the above calculation formula marked in the actual application scenario of the projection device.

[0114] In the control method of the projection device provided in the embodiment of the present application, the controller can obtain the interval distance between the projection device and the projection surface, divide the projection surface into multiple projection areas based on the number of speakers, and determine the center point positions of the multiple projection areas. The target angle to be rotated of each speaker can be determined based on the interval distance and the center point positions of the multiple projection areas, and each speaker can be controlled to rotate to its corresponding target angle, so that the position of the secondary sound source generated by each speaker matches the center point position of the multiple projection areas. After determining the position of the secondary sound source, audio can be projected to the position of the secondary sound source while projecting, so that the user can obtain audio from the secondary sound source while watching the picture projected by the projection device, thereby improving the user's audio and video experience.

[0115] The specific structure of the controller provided in the embodiment of the present application is explained below.

[0116] Figure 8 For a schematic diagram of the structure of the controller provided in the embodiment of the present application, please refer to Figure 8 The controller includes: a memory 810 and a processor 820. The memory 810 stores a computer program that can be run on the processor 820. When the processor 820 executes the computer program, the steps of the control method of the above-mentioned projection device are implemented.

[0117] Optionally, the controller is the controller in the above-mentioned projection device, and the controller can execute the control method of the above-mentioned projection device.

[0118] In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0119] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0120] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0121] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (English: processor) to perform some steps of the methods of various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (English: Read-Only Memory, abbreviated: ROM), random access memory (English: Random Access Memory, abbreviated: RAM), disk or optical disk and other media that can store program codes.

[0122] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0123] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A projection device, characterized in that: include: A controller and a plurality of speakers, any one of which is used to generate a secondary sound source on a projection surface corresponding to the projection device; The plurality of speakers include: a first speaker and a second speaker, wherein the first speaker and the second speaker are symmetrically arranged relative to the optical machine lens of the projection device; The controller is used to obtain the interval distance between the projection device and the projection surface; divide the projection surface into multiple projection areas based on the number of speakers, and determine the center point positions of the multiple projection areas; determine the target angle to be rotated of each speaker according to the interval distance and the center point positions of the multiple projection areas, and control each speaker to rotate to its corresponding target angle, so that the position of the secondary sound source generated by each speaker matches the center point position of the multiple projection areas; Wherein, the controller is specifically used for: Determine a first target angle value for each of the speakers to be rotated in the horizontal direction according to the interval distance and the center point positions of the multiple projection areas; Determine a second target angle value for each speaker to be rotated in the vertical direction according to the interval distance and the center point positions of the multiple projection areas; Wherein, the controller is specifically used for: Determine first parameter information based on the center point positions of the multiple projection areas, the first parameter information including: the length of the projection screen and a preset horizontal distance of each of the speakers relative to the optical machine lens of the projection device; Determine a first target angle value to be rotated in the horizontal direction for each speaker based on the interval distance and the first parameter information; Wherein, the controller is specifically used for: Determine second parameter information based on the center point positions of the multiple projection areas, the second parameter information including: the height of the projection screen and the height difference of each of the speakers relative to the upper edge of the projection screen; A second target angle value to be rotated in the vertical direction for each speaker is determined based on the interval distance and the second parameter information.

2. The device according to claim 1, characterized in that Any of the speakers is arranged at a first preset angle in a horizontal direction toward the projection surface; any of the speakers is arranged at a second preset angle in a vertical direction toward the projection surface; any of the speakers is arranged tilted outward toward the projection surface.

3. The device according to claim 1, characterized in that The projection surface includes a first projection sub-area and a second projection sub-area; The first loudspeaker is used to generate a secondary sound source in the first projection sub-area; the second loudspeaker is used to generate a secondary sound source in the second projection sub-area.

4. The device according to claim 3, characterized in that The device further comprises: a first motor and a second motor, the first motor being connected to the first speaker, the second motor being connected to the second speaker, and the first motor and the second motor being respectively connected to the controller; The controller is used to determine a first target angle value to be rotated of the first speaker and a second target angle value to be rotated of the second speaker according to the interval distance, and send a first control instruction to the first motor based on the first target angle value and send a second control instruction to the second motor based on the second target angle value; The first motor is used to rotate the first speaker to a first target angle based on the first control instruction; The second motor is used to rotate the second speaker to a second target angle based on the second control instruction.

5. A method for controlling a projection device, characterized in that: The method is applied to the controller of the projection device according to any one of claims 1 to 4, and the method comprises: Acquire the distance between the projection device and the projection surface; Divide the projection surface into multiple projection areas based on the number of speakers, and determine the center points of the multiple projection areas; Determine a target angle to be rotated of each speaker according to the interval distance and the center point positions of the multiple projection areas, and control each speaker to rotate to its corresponding target angle so that the position of the secondary sound source generated by each speaker matches the center point positions of the multiple projection areas; The step of determining a target angle to be rotated of each speaker according to the interval distance and the center point positions of the plurality of projection areas comprises: Determine a first target angle value for each of the speakers to be rotated in the horizontal direction according to the interval distance and the center point positions of the multiple projection areas; Determine a second target angle value for each speaker to be rotated in the vertical direction according to the interval distance and the center point positions of the multiple projection areas; The step of determining a first target angle value to be rotated in the horizontal direction for each speaker according to the interval distance and the center point positions of the plurality of projection areas comprises: Determine first parameter information based on the center point positions of the multiple projection areas, the first parameter information including: the length of the projection screen and a preset horizontal distance of each of the speakers relative to the optical machine lens of the projection device; Determine a first target angle value to be rotated in the horizontal direction for each speaker based on the interval distance and the first parameter information; The step of determining a second target angle value to be rotated in the vertical direction for each speaker according to the interval distance and the center point positions of the plurality of projection areas comprises: Determine second parameter information based on the center point positions of the multiple projection areas, the second parameter information including: the height of the projection screen and the height difference of each of the speakers relative to the upper edge of the projection screen; A second target angle value to be rotated in the vertical direction for each speaker is determined based on the interval distance and the second parameter information.

6. A controller, characterized in that: include: A memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the computer program, the steps of the method described in claim 5 are implemented.

7. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, which, when executed by a processor, implements the steps of the method according to claim 5.

Images