Vehicle-mounted projection device, control method and equipment thereof, and storage medium

Abstract

The application discloses a vehicle-mounted projection device and a control method, equipment and storage medium thereof, and belongs to the technical field of vehicle-mounted equipment. The vehicle-mounted projection device comprises a projection device body, a supporting device and a rotating device. The rotating device comprises a first rotating shaft and a second rotating shaft, and the first rotating shaft and the second rotating shaft are not parallel. A control unit is configured to determine at least one target projection area in a plurality of reference projection areas calibrated in a vehicle according to a driving condition in the case of receiving a first projection instruction. If all specified positions fall in any target projection area in the at least one target projection area, the rotating device is controlled to perform a rotating action according to the position of the any target projection area. After the rotating action is completed, the projection device body is controlled to project a projection image in the any target projection area. By linking the rotating device with the driving condition of the vehicle, the application can meet the projection demand of the user while ensuring the driving safety.

Description

Technical Field

[0001] This application relates to the field of vehicle-mounted equipment technology, and in particular to a vehicle-mounted projection device and its control method, equipment, and storage medium. Background Technology

[0002] In-vehicle projection devices need to accurately project images onto a designated area inside the vehicle to provide diverse functions such as navigation guidance, driver assistance prompts, and entertainment content display. With the continuous advancement of vehicle intelligence, in-vehicle projection devices, as key equipment for enriching human-vehicle interaction scenarios and realizing intelligent cockpits, have become a core highlight for differentiated competition among vehicle manufacturers.

[0003] In related technologies, vehicle-mounted projection devices typically adopt a fixed installation structure. The vehicle-mounted projection device is directly mounted in a specific position inside the vehicle through a fixed bracket, and the projection direction is pre-calibrated to keep the projection direction unchanged. In this way, a human-vehicle interaction scenario can be built through the vehicle-mounted projection device.

[0004] However, when the projection direction of the in-vehicle projection device is fixed, it is easy to cause problems such as misaligned information display, inconvenience for users to view, and insufficient functional adaptability, which in turn affects the efficiency of human-vehicle interaction, driving safety and user driving experience, and makes it difficult to meet the diverse usage needs of users. Summary of the Invention

[0005] This application provides a vehicle-mounted projection device and its control method, equipment, and storage medium to solve the technical problems existing in related technologies. Specifically, it includes the following technical solutions.

[0006] In a first aspect, this application provides a vehicle-mounted projection device, comprising: a projection device body for generating a projected image based on an input projection signal; a support device for connecting the vehicle-mounted projection device and a vehicle; a rotating device connected between the projection device body and the support device, the rotating device including a first rotating axis and a second rotating axis, wherein the first rotating axis and the second rotating axis are not parallel; and a control unit for determining at least one target projection area among a plurality of reference projection areas calibrated within the vehicle based on driving conditions upon receiving a first projection instruction for projecting the projected image at a specified location; controlling the rotating device to perform a rotation action based on the position of the at least one target projection area if all specified locations fall within any of the at least one target projection area; and controlling the projection device body to project the projected image onto the target projection area after the rotation action is completed.

[0007] In some possible implementations, the plurality of reference projection areas correspond to a plurality of rotation ranges. When the control unit controls the rotating device to perform a rotation action based on the position of any target projection area, it is configured to: determine the target rotation range among the plurality of rotation ranges based on the position of any target projection area, wherein the target rotation range includes a first rotation range corresponding to the first rotation axis and a second rotation range corresponding to the second rotation axis; control the rotating device to perform a rotation action around the first rotation axis within the first rotation range; and control the rotating device to perform a rotation action around the second rotation axis within the second rotation range.

[0008] In some possible implementations, when the control unit controls the projection device body to project the projected image in any target projection area, it is configured to: perform a first distortion correction on the projected image based on the position of the target projection area; and control the projection device body to project the first distortion-corrected projected image in the target projection area.

[0009] In some possible implementations, the plurality of reference projection regions correspond to a plurality of reference distortion correction parameters. When the control unit performs a first distortion correction on the projected image based on the position of any target projection region, it is configured to: determine a target distortion correction parameter among the plurality of reference distortion correction parameters based on the position of any target projection region; and perform a first distortion correction on the projected image based on the target distortion correction parameter.

[0010] In some possible implementations, the control unit is further configured to, upon receiving the first projection instruction and when the specified position does not fall entirely within any of the target projection areas, correct the target distortion correction parameters according to the specified position; perform a second distortion correction on the projected image according to the corrected target distortion correction parameters; and control the projection device body to project the second distortion-corrected projected image at the specified position.

[0011] In some possible implementations, the control unit is further configured to generate a first warning message when the first projection instruction is received and the designated location does not fall entirely within the at least one target projection area, the warning message being used to indicate that projection is prohibited at the designated location.

[0012] In some possible implementations, the support device is a telescopic structure, with the first rotation axis parallel to the direction of the telescopic movement and the second rotation axis perpendicular to the direction of the telescopic movement; the control unit is further configured to, when the lifting height of the telescopic structure does not reach a height threshold, determine a first range of values ​​for the first rotation angle and a second range of values ​​for the second rotation angle based on the lifting height; and generate a second warning message when the first rotation angle exceeds the first range and / or the second rotation angle exceeds the second range; wherein, the first rotation angle is the angle by which the first rotating structure rotates around the first rotation axis, the second rotation angle is the angle by which the second rotating structure rotates around the second rotation axis, and the second warning message is used to prompt the rotation movement to stop.

[0013] Secondly, this application provides a control method for an in-vehicle projection device. The in-vehicle projection device includes a projection device body for generating a projected image based on an input projection signal, a support device for connecting the in-vehicle projection device and a vehicle, and a rotating device connected between the projection device body and the support device. The rotating device includes a first rotating axis and a second rotating axis, which are not parallel. The method includes: receiving a first projection command for projecting the projected image at a specified position; determining at least one target projection area among a plurality of reference projection areas calibrated within the vehicle based on driving conditions; if the specified position falls entirely within any one of the at least one target projection area, controlling the rotating device to perform a rotation action based on the position of the target projection area; and, after the rotation action is completed, controlling the projection device body to project the projected image onto the target projection area.

[0014] In some possible implementations, the plurality of reference projection areas correspond to a plurality of rotation ranges. Controlling the rotating device to perform a rotation action based on the position of any target projection area includes: determining a target rotation range among the plurality of rotation ranges based on the position of any target projection area, wherein the target rotation range includes a first rotation range corresponding to the first rotation axis and a second rotation range corresponding to the second rotation axis; controlling the rotating device to perform a rotation action around the first rotation axis within the first rotation range; and controlling the rotating device to perform a rotation action around the second rotation axis within the second rotation range.

[0015] In some possible implementations, controlling the projection device body to project the projected image in any target projection area includes: performing a first distortion correction on the projected image based on the position of the target projection area; and controlling the projection device body to project the first distortion-corrected projected image in the target projection area.

[0016] In some possible implementations, the plurality of reference projection regions correspond to a plurality of reference distortion correction parameters, and the first distortion correction of the projected image based on the position of any target projection region includes: determining a target distortion correction parameter among the plurality of reference distortion correction parameters based on the position of any target projection region; and performing the first distortion correction on the projected image based on the target distortion correction parameter.

[0017] In some possible implementations, the method further includes: upon receiving the first projection instruction and if the specified position does not fall entirely within any of the target projection areas, correcting the target distortion correction parameters according to the specified position; performing a second distortion correction on the projected image according to the corrected target distortion correction parameters, and controlling the projection device body to project the second distortion-corrected projected image at the specified position.

[0018] In some possible implementations, the method further includes: generating a first warning message when the first projection instruction is received and the designated location does not fall entirely within the at least one target projection area, the warning message being used to indicate that projection is prohibited at the designated location.

[0019] In some possible implementations, the support device is a telescopic structure, with the first rotation axis parallel to the direction of the telescopic movement and the second rotation axis perpendicular to the direction of the telescopic movement; the method further includes: when the lifting height of the telescopic structure does not reach a height threshold, determining a first value range of a first rotation angle and a second value range of a second rotation angle based on the lifting height; when the first rotation angle exceeds the first value range and / or the second rotation angle exceeds the second value range, generating a second warning message; wherein, the first rotation angle is the angle by which the first rotating structure rotates around the first rotation axis, the second rotation angle is the angle by which the second rotating structure rotates around the second rotation axis, and the second warning message is used to prompt the rotation movement to stop.

[0020] Thirdly, this application provides an electronic device, comprising: a memory storing program instructions for controlling an in-vehicle projection device; and a processor, which, when the program instructions are executed by the processor, causes the vehicle to implement the method in any possible implementation of the second aspect of this application.

[0021] Fourthly, this application provides a computer program (product) including computer program / instructions, which are executed by a processor to cause a vehicle to implement the method in any possible implementation of the second aspect of this application.

[0022] Fifthly, this application provides a computer-readable storage medium storing program instructions for controlling an in-vehicle projection device, which, when executed by one or more processors, cause the vehicle to implement the method in any possible implementation of the first or second aspect of this application.

[0023] In a sixth aspect, this application provides a vehicle that includes the apparatus described in any possible embodiment of the first aspect of this application.

[0024] The beneficial effects of the technical solution provided in this application include at least the following: The technical solution provided in this application, by setting a first rotation axis and a second rotation axis, enables the vehicle-mounted projection device to achieve multi-dimensional rotational adjustment, breaking the technical limitations of traditional vehicle-mounted projection devices with fixed projection direction or only single-angle fine adjustment. Furthermore, since the rotation axes of the first and second rotation axes are not parallel, they can form a multi-directional rotational adjustment mechanism, without the limitation of adjustment in a single rotational dimension. This allows for multi-directional switching and precise adjustment of the projection direction, enabling the vehicle-mounted projection device to flexibly adjust the projection direction according to different application scenarios, adapting to the diverse needs of users in different situations. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a vehicle-mounted projection device provided in an embodiment of this application; Figure 2 This is a schematic diagram illustrating the working principle of the rotating device provided in the embodiments of this application; Figure 3 This is a schematic diagram illustrating the working principle of the first rotating shaft provided in an embodiment of this application; Figure 4 This is a schematic diagram illustrating the working principle of the second rotating shaft provided in an embodiment of this application; Figure 5 This is a schematic diagram of an in-vehicle projection device equipped with a human-like emotional expression module, provided in an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures: 110. Projection device body; 120. Support device; 130. Rotation device; 140. Control unit; 131. First rotation axis; 132. Second rotation axis. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0030] Driven by the wave of vehicle intelligence, intelligent interactive experience and multi-scenario adaptability have gradually become important evaluation indicators of vehicle core competitiveness and user experience. Based on this, the application scenarios of in-vehicle projection devices are constantly expanding, including scenarios such as displaying driver assistance information, in-vehicle entertainment interaction, atmosphere creation, and personalized information display for passengers.

[0031] Therefore, vehicle-mounted projection devices with fixed installation structures not only have poor adaptability, making it impossible to flexibly adjust the position of the projection area and the projected image according to user needs, making it difficult to adapt to the diverse needs of users in different usage scenarios, but also fail to provide users with more intuitive and efficient information interaction support. This restricts the development of vehicle-mounted projection devices towards all-scenario and intelligent directions, and fails to meet consumers' high-quality, personalized, and diversified usage needs for intelligent cockpit interactive experiences.

[0032] In view of this, this application provides a vehicle-mounted projection device, comprising: a projection device body for generating a projected image based on an input projection signal; a support device for connecting the vehicle-mounted projection device and a vehicle; a rotating device connected between the projection device body and the support device, the rotating device including a first rotating axis and a second rotating axis, wherein the first rotating axis and the second rotating axis are not parallel; and a control unit for determining at least one target projection area among a plurality of reference projection areas calibrated within the vehicle according to driving conditions upon receiving a first projection command for projecting a projected image at a specified location; controlling the rotating device to perform a rotation action based on the position of any target projection area if all specified locations fall within any of the at least one target projection area; and controlling the projection device body to project a projected image in any target projection area after the rotation action is completed.

[0033] The technical solution provided in this application, by setting a first rotation axis and a second rotation axis in the rotating device, enables the vehicle-mounted projection device to achieve multi-dimensional rotational adjustment, breaking the technical limitations of traditional vehicle-mounted projection devices with fixed projection direction or only single-angle fine adjustment. Furthermore, since the first and second rotation axes are not parallel, they can form a multi-directional rotational adjustment coordination, without the limitation of adjustment in a single rotational dimension. This allows for multi-directional switching and precise adjustment of the projection direction, enabling the vehicle-mounted projection device to flexibly adjust the projection direction according to different vehicle driving conditions, adapting to the diverse needs of users in different scenarios.

[0034] Figure 1 This is a schematic diagram of the structure of a vehicle-mounted projection device provided in an embodiment of this application. (Reference) Figure 1 The vehicle-mounted projection device provided in this application embodiment includes a projection device body 110, a support device 120, a rotating device 130, and a control unit 140. The rotating device 130 includes a first rotating shaft 131 and a second rotating shaft 132, and the first rotating shaft 131 and the second rotating shaft 132 are not parallel.

[0035] Support device 120 is used, but is not limited to, to connect the vehicle-mounted projection device and the vehicle.

[0036] Optionally, the vehicle may be provided with a fixed mounting position for connecting to the support device 120, so that the vehicle-mounted projection device can be stably installed in a specific location on the vehicle. The vehicle serves as both the mounting carrier and the usage scenario carrier for the vehicle-mounted projection device, specifically referring to any type of vehicle equipped with the vehicle-mounted projection device provided in this application embodiment, including but not limited to passenger cars, SUVs (sport utility vehicles), and new energy vehicles. The location of the fixed mounting position can be adjusted according to the actual application scenario, for example, it can be located in the center of the vehicle's dashboard, the passenger side dashboard, the roof lining, or the rear passenger area. This application does not impose any restrictions on the type of vehicle or the specific location of the fixed mounting position.

[0037] The support device 120 may employ a telescopic structure, which is used, but is not limited to, to change the lifting height between the projection device body 110 and the vehicle's mounting surface through telescopic movement. For example, when the telescopic structure is in the retracted state, the lifting height between the projection device body 110 and the vehicle's mounting surface is 0, meaning the projection device body 110 is flush with the vehicle's mounting surface; when the telescopic structure is in the extended state, the lifting height between the projection device body 110 and the vehicle's mounting surface is greater than 0, and the projection device body 110 rises synchronously with the extension movement of the telescopic structure, and the height after elevation is flexibly adjusted according to the telescopic stroke of the telescopic structure to adapt to the height requirements of different projection scenarios.

[0038] In some embodiments, the telescopic structure may be, for example, an electric telescopic rod, a multi-stage sleeve telescopic structure, a linkage telescopic structure, or any other type of device capable of changing the lifting height between the projection device body 110 and the vehicle mounting surface through telescopic movement. This application makes no limitation in this regard.

[0039] The projection device body 110 is used, but is not limited to, for generating a projected image based on an input projection signal.

[0040] For example, the vehicle-mounted projection device is communicatively connected to the vehicle, which serves as the mounting carrier. The projection signal is sent from the vehicle's onboard infotainment system to the vehicle-mounted projection device, and the projection device body 110 generates a projected image based on the received projection signal. The projection signal indicates the content information to be projected, projection parameters, and projection control commands, while the projected image indicates the actual visual image presented in the reference projection area inside the vehicle.

[0041] The rotating device 130 is connected between the projection device body 110 and the support device 120. The rotating device 130 includes a first rotating shaft 131 and a second rotating shaft 132, and the first rotating shaft 131 and the second rotating shaft 132 are not parallel.

[0042] For example, the rotating device 130 is used to perform a rotating action under the control of the control unit 140 and drive the projection device body 110 to rotate, so as to adjust the projection direction of the projection device body 110. Since the rotation axes of the first rotation axis 131 and the second rotation axis 132 are not parallel, during the rotation action of the rotating device 130, the first rotation axis 131 and the second rotation axis 132 can form a multi-dimensional rotation adjustment coordination, breaking the adjustment limitation of a single rotation dimension, and realizing flexible switching and precise adjustment of the projection direction through the combination of different rotation angles.

[0043] The control unit 140 is configured, but not limited to, to determine, based on driving conditions, at least one of a plurality of reference projection areas calibrated within the vehicle, upon receiving a first projection instruction for projecting a projected image at a specified location.

[0044] For example, the first projection instruction is a command sent by the user to the in-vehicle projection device through the interactive options provided by the in-vehicle projection device, used, but not limited to, indicating the user's expectations for the projection position, projection parameters, projection duration, etc. of the projected image. For example, the user expects a projected image to be projected onto a specific area of ​​the vehicle's windshield, and the brightness, contrast, and projection duration of the projected image are all specified by the user through the first projection instruction.

[0045] The vehicle's driving conditions are, for example, classified into types based on parameters such as the vehicle's current driving status, speed, gear position, and parking status. These conditions are used, but are not limited to, to provide constraints for the control unit 140 to determine at least one target projection area, ensuring that the selection of at least one target projection area is adapted to the vehicle's current driving scenario, taking into account both the projection display effect and driving safety.

[0046] The multiple reference projection areas calibrated inside the vehicle are obtained by dividing the projectable area inside the vehicle based on the vehicle's interior layout, driving and riding visibility requirements, and projection display effects. These multiple reference projection areas are distributed in areas such as the vehicle's windshield, windshield black border, roof awning, interior panels, or any other area inside the vehicle capable of carrying a projected image. This application does not impose any restrictions on the distribution location or division method of the reference projection areas.

[0047] Considering that in practical applications, areas within a vehicle capable of displaying projected images, such as the windshield, windshield bezel, sunroof, and interior trim panels, are typically irregular curved surfaces or non-planar structures, distortion, offset, or incomplete display may occur when the projected image is projected to different locations due to variations in surface curvature, projection distance, and projection angle. Therefore, this embodiment divides the areas within the vehicle capable of displaying projected images into multiple reference projection areas, ensuring high stability of the displayed image within any of these areas. This guarantees that the projected image is presented completely, clearly, and without significant distortion in different areas, improving the viewing experience for passengers.

[0048] Furthermore, considering that in practical applications, when a vehicle is under different driving conditions, there may be areas suitable for projecting images and areas unsuitable for projecting images among the multiple reference projection areas. For example, when the vehicle is traveling at high speed, if the user's desired projection position, i.e., the specified position indicated by the first projection command, is located on the vehicle's sunroof, the projected image may interfere with the driver's experience, thereby affecting driving safety. Therefore, in the method provided in this application embodiment, after receiving the first projection command, the control unit can filter the multiple reference projection areas calibrated within the vehicle according to the vehicle's driving conditions to determine at least one target projection area to ensure driving safety.

[0049] For example, when multiple reference projection areas are located in areas such as the vehicle's windshield, windshield rim, sunroof, and interior trim, a method for determining at least one target projection area among the multiple calibrated reference projection areas within the vehicle based on driving conditions includes, for example: when the vehicle is in a low-speed driving condition (≤30km / h), unlocking the windshield rim area and the reference projection areas within the windshield, i.e., the determined at least one target projection area is located in the windshield rim and / or within the windshield. When the vehicle is in a high-speed driving condition (>30km / h), only unlocking the reference projection areas within the windshield, i.e., at least one target projection area is located within the windshield. When the vehicle is in a parked or stationary condition, unlocking all reference projection areas, i.e., at least one target projection area is located within the windshield, windshield rim, sunroof, and / or interior trim.

[0050] It should be noted that the mapping relationship between the driving conditions and at least one target projection area, as well as the calibration method of the driving conditions, in the above method are illustrative and not restrictive. In some possible cases, the driving conditions may include more types, and the speed range of high-speed driving conditions and low-speed driving conditions may also be adjusted according to the actual application scenario. This application does not impose any restrictions in this regard.

[0051] The control unit 140 is also configured to control the rotating device 130 to perform a rotation operation based on the position of any target projection area if all specified positions fall within any target projection area of ​​at least one target projection area; and, after the rotation operation is completed, control the projection device body 110 to project a projected image in any target projection area.

[0052] As described above, distortion and offset may occur when the projected image is projected to different positions. Therefore, in some embodiments of the vehicle-mounted projection device provided in this application, the control unit 140, when controlling the projection device body 110 to project a projected image in any target projection area, is configured to: perform a first distortion correction on the projected image based on the position of any target projection area; and control the projection device body 110 to project the first distortion-corrected projected image in any target projection area.

[0053] In some embodiments, multiple reference projection areas correspond to multiple reference distortion correction parameters. When the control unit 140 performs a first distortion correction on the projected image based on the position of any target projection area, it is configured to: determine a target distortion correction parameter among the multiple reference distortion correction parameters based on the position of any target projection area; and perform a first distortion correction on the projected image based on the target distortion correction parameter.

[0054] The multiple reference distortion correction parameters are, for example, a set of distortion correction parameters pre-calibrated based on the positions of multiple reference projection areas. These parameters are used, but are not limited to, to enable the control unit 140 to adaptively correct the projected image generated by the projection device 110 when all specified positions fall within any target projection area, as desired by the user. Each of the multiple reference distortion correction parameters corresponds one-to-one with a specific reference projection area. The target distortion correction parameter is the parameter among the multiple reference distortion correction parameters that corresponds to the reference projection area at the specified position; that is, the parameter corresponding to any target projection area when all specified positions fall within any target projection area.

[0055] Because the display form of a projected image within any of multiple reference projection areas exhibits high stability, by pre-calibrating multiple reference distortion correction parameters that correspond one-to-one with each of the multiple reference projection areas, this embodiment of the application can quickly determine the target distortion correction parameters when correcting the projected image, reducing the computational resource requirements of image correction in the vehicle and improving computational efficiency. Simultaneously, any one of the multiple reference distortion correction parameters is compatible with any position within its corresponding reference projection area; that is, when adjusting the projection position of the projected image within any reference projection area, a corresponding set of reference distortion correction parameters is applied.

[0056] In other embodiments, the control unit 140 is further configured to, upon receiving a first projection instruction and when the specified position does not fall entirely within any target projection area, correct the target distortion correction parameters according to the specified position; perform a second distortion correction on the projected image according to the corrected target distortion correction parameters; and control the projection device body (110) to project the second distortion-corrected projected image at the specified position.

[0057] If the specified location falls entirely within at least one reference projection area but not entirely within any target projection area (i.e., the specified location falls within multiple adjacent target projection areas within at least one reference area), then there are multiple target distortion correction parameters, each corresponding one-to-one with a target projection area. In this case, the method for correcting the target distortion correction parameters based on the specified location is, for example, to correct one of the multiple target distortion correction parameters based on the specified location. Here, a single target distortion correction parameter is, for example, the distortion correction parameter corresponding to the projection area with the largest area proportion in which the specified location falls among the multiple target projection areas, and the projection area with the largest area proportion in which the specified location falls is the final projection area of ​​the projected image.

[0058] In some possible scenarios, the control unit 140 is further configured to generate a first warning message when a first projection command is received and the specified location does not fall entirely within at least one target projection area. The warning message serves to indicate that projection is prohibited at the specified location to ensure driving safety. Exemplarily, the first warning message may be a voice prompt, text prompt, light prompt, or interface pop-up prompt, etc., and this application makes no limitations in this regard.

[0059] In some embodiments, multiple reference projection areas correspond to multiple rotation ranges. When the control unit 140 controls the rotating device 130 to perform a rotation action based on the position of any target projection area, it is configured to: determine a target rotation range among multiple rotation ranges based on the position of any target projection area, wherein the target rotation range includes a first rotation range corresponding to the first rotation axis 131 and a second rotation range corresponding to the second rotation axis 132; control the rotating device 130 to perform a rotation action around the first rotation axis 131 within the first rotation range; and control the rotating device 130 to perform a rotation action around the second rotation axis 132 within the second rotation range.

[0060] The multiple rotation ranges are, for example, a set of rotation parameters pre-calibrated based on multiple reference projection positions. These parameters are used, but are not limited to, when all the user-expected specified positions fall within any target projection area. This allows the control unit 140 to quickly determine the control parameters of the rotation device 130 and control the rotation device 130 to perform rotational actions, thereby improving the control efficiency of the vehicle-mounted projection device and reducing the computational resource requirements of the vehicle. Each of the multiple rotation ranges corresponds one-to-one with a multiple reference projection area. The target rotation range is the parameter corresponding to the reference projection area into which the specified position falls within the multiple rotation ranges; specifically, the parameter corresponding to any target projection area when all the specified positions fall within any target projection area.

[0061] In other embodiments, the control unit 140 is further configured to correct the target rotation range based on the specified position when the specified position does not fall entirely within any target projection area, and to control the rotating device 130 to perform a rotation action based on the corrected target rotation range. For example, controlling the rotating device 130 to rotate around the first rotation axis 132 within a first target rotation range within the corrected target rotation range, and controlling the rotating device 130 to rotate around the second rotation axis 132 within a second target rotation range within the corrected target rotation range.

[0062] If the specified position falls entirely within at least one reference projection area but not entirely within any target projection area (i.e., the specified position falls within multiple adjacent target projection areas within at least one reference area), then there are multiple target rotation ranges, each corresponding one-to-one with a target projection area. In this case, the method for correcting the target rotation range based on the specified position is, for example, to correct one target rotation range based on the specified position. Here, a target rotation range is, for example, the rotation range corresponding to the projection area with the largest area proportion in which the specified position falls among the multiple target rotation ranges, and the projection area with the largest area proportion in which the specified position falls is the final projection area of ​​the projected image.

[0063] Figure 2 This is a schematic diagram illustrating the working principle of the rotating device provided in the embodiments of this application.

[0064] like Figure 2As shown, since the rotation axes of the first rotation axis 131 and the second rotating brick structure 132 are not parallel, when the first rotation axis 131 performs a rotational action, the projection device body 110 can rotate in a first plane perpendicular to the first rotation axis 131, thereby adjusting the projection direction in the first plane. When the second rotation axis 132 performs a rotational action, the projection device body 110 can rotate in a second plane perpendicular to the second rotation axis 132, thereby adjusting the projection direction in the second plane. This allows the projection direction of the projection device body 110 to cover the multi-dimensional space inside the vehicle, enabling flexible switching and precise adjustment of the projection direction. For example, the projection direction of the projection device body 110 can be switched from the vehicle's windshield to the vehicle's sunroof.

[0065] Considering that in real-world scenarios, multiple reference projection areas such as the windshield border, sunroof, and interior panels within a vehicle are typically irregular curved surfaces, the projected image projected by the projection device 110 needs to precisely conform to the boundaries of these projection areas to avoid occlusion or distortion, thus ensuring optimal viewing. Therefore, the vehicle-mounted projection device provided in this embodiment functionally divides the rotational actions of the first rotation axis 131 and the second rotation axis 132 in a single dimension using an angle threshold. This allows the rotation structure to switch the target projection area of ​​the projection device 110 among multiple reference projection areas during large-angle rotations, and to fine-tune the position of the projected image within the current target projection area during small-angle rotations. This achieves a fusion of flexible switching of projection areas and precise calibration of the image within the target projection area, enabling the projected image to quickly and accurately conform to the boundaries of different irregular curved reference projection areas, effectively avoiding image occlusion and distortion, and ensuring optimal viewing in various projection scenarios.

[0066] For example, the control unit 140 is further configured to execute a second projection command when the first rotation angle of the first rotation axis reaches a first angle threshold, causing the projection device body 110 to switch the position of the target projection area among multiple reference projection areas. The control unit 140 is also configured to execute a third projection command when the first rotation angle of the first rotation axis 132 does not reach the first angle threshold, causing the projection device body 110 to adjust the position of the projected image within the target projection area. The first rotation angle is the angle at which the first rotation axis 131 rotates around the first rotation axis. The second projection command is a command sent by the user through the interactive options provided by the in-vehicle projection device to switch the target projection area among multiple reference projection areas, and the third projection command is a command sent by the user through the interactive options provided by the in-vehicle projection device to adjust the projection position within the target projection area.

[0067] Figure 3 This is a schematic diagram illustrating the working principle of the first rotating shaft provided in the embodiments of this application.

[0068] In some embodiments, the plurality of reference projection areas may include, for example, a first projection area, a second projection area, and a third projection area disposed on the black edge of the windshield.

[0069] like Figure 3 As shown, when the first rotation axis 131 is greater than the first angle threshold, the target projection area of ​​the projection device body 110 switches between the first projection area, the second projection area, and the third projection area. For example, it switches from the first projection area to the second projection area, or from the second projection area to the third projection area, or from the first projection area to the third projection area, or from the second projection area to the first projection area, or from the third projection area to the first projection area.

[0070] When the target projection area of ​​the projection device body 110 is any one of the first projection area, the second projection area, and the third projection area, and the first rotation angle of the first rotation axis 131 is less than the first angle threshold, the projection device body 110 adjusts the position of the projected image in the target projection area.

[0071] The value of the first angle threshold can be adjusted, for example, according to the surface parameters of multiple reference projection areas, installation layout, and adaptation requirements of the projection screen in the actual application scenario. This application does not impose any restrictions in this regard.

[0072] For example, the control unit 140 is also configured to execute a second projection command when the second rotation angle of the second rotation axis 132 reaches a second angle threshold, causing the projection device body 110 to switch the position of the target projection area among multiple reference projection areas. Furthermore, when the second rotation angle of the second rotation axis 132 does not reach the second angle threshold, the control unit 140 is configured to adjust the position of the projected image in the target projection area, where the second rotation angle is the angle of rotation of the second rotation axis around the second rotation axis.

[0073] Figure 4 This is a schematic diagram illustrating the working principle of the second rotating shaft provided in the embodiments of this application.

[0074] In some embodiments, the plurality of reference projection areas include, for example, a fourth projection area and a fifth projection area disposed on the windshield of the vehicle.

[0075] like Figure 4 As shown, when the second rotation angle of the second rotation axis 132 is greater than the second angle threshold, the target projection area of ​​the projection device body 110 switches between the fourth projection area and the fifth projection area. For example, switching from the fourth projection area to the fifth projection area, or switching from the fifth projection area to the fourth projection area.

[0076] When the target projection area of ​​the projection device body 110 is the fourth projection area or the fifth projection area, and the second rotation angle of the second rotation axis 132 is less than the second angle threshold, the projection device body 110 adjusts the position of the projected image in the target projection area.

[0077] Similarly, the value of the second angle threshold can be adjusted according to the surface parameters of multiple reference projection areas, installation layout, and adaptation requirements of the projection screen in the actual application scenario. This application does not impose any restrictions in this regard.

[0078] Furthermore, considering that in practical applications, the spatial position of the projection device body 110 dynamically changes when the support device 120 performs its telescopic movement, adjusting the projection direction of the projection device body 110 via the rotating structure at this time might lead to interference between the telescopic and rotating structures. For example, when the telescopic structure performs its telescopic movement, the height and relative angle between the projection device body 110 and the target projection area are dynamic values. If a small-angle fine-tuning of the projected image is performed, the adjusted image position will become invalid due to the telescopic movement, constituting a meaningless and ineffective adjustment. Therefore, in the vehicle-mounted projection device provided in this embodiment, a specific cooperative relationship is formed between the rotating device and the telescopic structure to avoid ineffective adjustments and improve the overall efficiency of projection adjustment.

[0079] For example, the control unit 140 is configured to control the first rotation axis 131 such that a first rotation angle is greater than a first angle threshold when the telescopic structure is in a telescopic state; and to control the first rotation axis 131 such that the first rotation angle is less than or equal to the first angle threshold when the telescopic structure is not in a telescopic state. The telescopic state indicates the state in which the telescopic structure performs a telescopic action, or the state in which the duration of the cessation of the telescopic action is less than a first time threshold. The value of the first time threshold can be adjusted according to the actual application scenario, and this application does not impose any restrictions in this regard.

[0080] Alternatively, the control unit 140 is further configured to, when the telescopic structure is in a telescopic state, control the second rotation axis 132 such that the second rotation angle is greater than the second angle threshold; and, when the telescopic structure is not in a telescopic state, control the second rotation axis 132 such that the second rotation angle is less than or equal to the second angle threshold. The telescopic state indicates the state in which the telescopic structure performs a telescopic action, or the state in which the duration of stopping the telescopic action is less than a first time threshold.

[0081] The aforementioned vehicle-mounted projection device, by limiting the rotation angle of the rotating structure in the telescopic state, ensures that the rotational action of the rotating structure coordinates with the telescopic action of the telescopic structure. During large-angle rotation, the height of the telescopic action locks the target projection area, preventing interference between the telescopic and rotational actions. For example, when the telescopic structure is in the telescopic state, a first rotation angle of the first rotation axis is allowed to exceed a first angle threshold, and a second rotation angle of the second rotation axis is allowed to exceed a second angle threshold. When the telescopic structure is not in the telescopic state, the rotating structure is allowed to rotate at small angles, eliminating invalid operations and improving the overall efficiency of projection adjustment.

[0082] Due to the compact interior of vehicles, other functional structural units within the vehicle may be located near the installation location of the in-vehicle projection device, potentially causing mechanical interference between the projection device and these other units during mechanical movement. Therefore, in the in-vehicle projection device provided in this application embodiment, the rotational travel of the first rotating shaft 131 and / or the second rotating shaft 132 can be stepped and limited according to the lifting height of the support device 120 to prevent mechanical interference between the projection device body 110 and surrounding components such as the vehicle dashboard and windshield.

[0083] In other embodiments, the control unit 140 is further configured to, when the raised height of the telescopic structure does not reach a height threshold, determine a first range of values ​​for the first rotation angle and a second range of values ​​for the second rotation angle based on the raised height; and generate a second warning message when the first rotation angle exceeds the first range and / or the second rotation angle exceeds the second range. The first rotation angle is the angle by which the first rotation axis (131) rotates around the first rotation axis, the second rotation angle is the angle by which the second rotation axis (132) rotates around the second rotation axis, and the second warning message is used to prompt the rotation action to stop.

[0084] For example, the height threshold includes height threshold A and height threshold B, and the first value range includes a first calibration range and a second calibration range.

[0085] When the raised height is less than the height threshold A, the control unit 140 controls the second rotating axis to prevent the second rotation angle from exceeding the first calibrated range. That is, when the raised height of the telescopic structure is small, only the rotation stroke of the second rotating axis within a small range, such as 0°-15°, is unlocked. When the raised height is greater than the height threshold A and less than the height threshold B, the control unit 140 controls the second rotating axis to prevent the second rotation angle from exceeding the second calibrated range. That is, when the raised height of the telescopic structure is large, the rotation stroke of the second rotating axis within a larger range, such as 0°-45°, is unlocked. When the raised height is greater than the height threshold B, the control unit 140 releases the restriction on the angle range of the second rotation angle. That is, when the raised height of the telescopic structure reaches the height threshold B, the rotation stroke of the second rotating axis is not restricted, and the rotation stroke of the second rotating axis within the range of 0°-360° is unlocked.

[0086] Among them, the height threshold A is less than the height threshold B, the first calibration range is less than the second calibration range and both are less than 0°-360°. The height threshold A, height threshold B, first calibration range and second calibration range can be adjusted according to the actual application scenario. For example, vehicle model adaptation calibration can be performed based on the parameters of the curved surface of the black edge of the vehicle's windshield and the layout of the dashboard. This application does not impose any restrictions in this regard.

[0087] It should be noted that the height thresholds A and B, as well as the first calibration range and the second calibration range mentioned above, are merely examples and not restrictive. Depending on the actual application scenario, the number of levels of the graded limit switch can be increased or decreased. For example, 1, 3, or 5 height thresholds can be set, and the corresponding calibration range of the rotation angle can be configured.

[0088] In other embodiments, the control unit 140 is also configured to determine the lifting height of the support device 120 based on driving condition information. For example, when the vehicle is parked, the lifting height is not limited; when the vehicle is in a low-speed or high-speed driving condition, the lifting height is varied within a specified range.

[0089] In some embodiments, the projection device body 110 further includes a human-like emotion expression module and a projection system. The projection system is used, but is not limited to, projecting a projected image onto a target projection area based on an input projection signal. The human-like emotion expression module is deeply integrated with the projection system, the support device 120, and the rotation device 130, and is used, but is not limited to, receiving emotion recognition signals from the vehicle's infotainment system and matching specific motion postures and emotion expression visuals based on the emotion recognition signals. The emotion recognition signals are used to indicate the vehicle's current driving status, interaction intentions, or the type of emotion to be conveyed to the driver and passengers, such as pleasure, reminders, and warnings.

[0090] Figure 5 This is a schematic diagram of an in-vehicle projection device equipped with a human-like emotion expression module, provided in an embodiment of this application. Figure 5 As shown, the human-like emotion expression module may be a built-in screen or a display device shaped like a human eye, and the vehicle projection device may be hemispherical or other shapes adapted to the vehicle scene. This application does not impose any restrictions in this regard.

[0091] Optionally, the method of matching specific motion postures and emotional expression images based on emotion recognition signals includes, for example: when the emotion indicated by the emotion recognition signal is a pleasant emotion, the control unit 140 controls the support device 120 to drive the projection device body 110 to rise to a first preset height, the rotating device 130 swings at a preset angle, the humanoid visual display unit displays a smiling expression, and the projection system projects a lightweight dynamic pattern on the black border of the windshield; when the emotion indicated by the emotion recognition signal is a reminder emotion, the control unit 140 controls the projection device body 110 to remain in a retracted state, controls the rotating device 130 to rotate to the corresponding reminder direction, controls the humanoid visual display unit to display a blinking reminder expression, and controls the projection system to highlight the reminder information in the corresponding projection area; when the emotion indicated by the emotion recognition signal is a warning emotion, the control unit 140 controls the support device 120 to drive the projection device body 110 to rise quickly to a second preset height, controls the humanoid visual display unit to display a frowning expression, and controls the projection system to project flashing warning text.

[0092] In some possible scenarios, the control unit 140 is also used to control the content of the projected image and the operation of the vehicle-mounted projection device based on the driving condition information. For example, when the vehicle is traveling at low speed (≤30km / h), the driving information projection and basic emotional expression in the black border area of ​​the windshield are unlocked, while entertainment projection, rear-view projection, and the height of the telescopic structure are restricted. When the vehicle is traveling at high speed (>30km / h), only the driving information projection is unlocked, while the telescopic and rotational movements of the vehicle-mounted projection device are restricted, and entertainment projection and non-warning emotional expressions are also restricted. When the vehicle is in parking or parked mode, the telescopic and rotational movements, all types of projection information, and all emotional expression functions of the vehicle-mounted projection device are unlocked.

[0093] In some other possible embodiments, the application provides a control method for an in-vehicle projection device. The in-vehicle projection device includes a projection device body for generating a projected image based on an input projection signal, a support device for connecting the in-vehicle projection device and a vehicle, and a rotating device connected between the projection device body and the support device. The rotating device includes a first rotating axis and a second rotating axis, which are not parallel. The method includes the following steps.

[0094] Step 1: Receive a first projection instruction for projecting an image at a specified location.

[0095] Step 2: Determine at least one target projection area from among the multiple reference projection areas calibrated within the vehicle, based on the driving conditions.

[0096] Step 3: If all the specified positions fall within any one of the target projection areas, control the rotating device to perform a rotation action based on the position of any one target projection area.

[0097] Step four: After the rotation action is completed, control the projection device to project a projected image onto any target projection area.

[0098] In some possible implementations, multiple reference projection areas correspond to multiple rotation ranges. Controlling the rotation device to perform a rotation action based on the position of any target projection area includes: determining a target rotation range among multiple rotation ranges based on the position of any target projection area, wherein the target rotation range includes a first rotation range corresponding to a first rotation axis and a second rotation range corresponding to a second rotation axis; controlling the rotation device to perform a rotation action around the first rotation axis within the first rotation range; and controlling the rotation device to perform a rotation action around the second rotation axis within the second rotation range.

[0099] In some possible implementations, controlling the projection device body to project a projected image in any target projection area includes: performing a first distortion correction on the projected image based on the position of any target projection area; and controlling the projection device body to project the first distortion-corrected projected image in any target projection area.

[0100] In some possible implementations, multiple reference projection regions correspond to multiple reference distortion correction parameters. Performing a first distortion correction on the projected image based on the position of any target projection region includes: determining a target distortion correction parameter among the multiple reference distortion correction parameters based on the position of any target projection region; and performing a first distortion correction on the projected image based on the target distortion correction parameter.

[0101] In some possible implementations, the method further includes: upon receiving a first projection instruction and when the specified position does not fall entirely within any target projection area, correcting the target distortion correction parameters according to the specified position; performing a second distortion correction on the projected image according to the corrected target distortion correction parameters; and controlling the projection device body to project the second distortion-corrected projected image at the specified position.

[0102] In some possible implementations, the method further includes: generating a first warning message when a first projection instruction is received and the specified location does not fall entirely within at least one target projection area, the warning message being used to indicate that projection is prohibited at the specified location.

[0103] In some possible implementations, the support device is a telescopic structure, with the first rotation axis parallel to the direction of the telescopic movement and the second rotation axis perpendicular to the direction of the telescopic movement. The method further includes: when the lifting height of the telescopic structure does not reach a height threshold, determining a first value range of the first rotation angle and a second value range of the second rotation angle based on the lifting height; generating a second warning message when the first rotation angle exceeds the first value range and / or the second rotation angle exceeds the second value range; wherein, the first rotation angle is the angle by which the first rotating structure rotates around the first rotation axis, the second rotation angle is the angle by which the second rotating structure rotates around the second rotation axis, and the second warning message is used to prompt the rotation movement to stop.

[0104] It should be noted that the control method of the vehicle-mounted projection device is the same as the principle of the aforementioned vehicle-mounted projection device, and the implementation of the control method of the vehicle-mounted projection device can be referred to the relevant description of the aforementioned vehicle-mounted projection device.

[0105] In some other possible implementations, this application also provides an electronic device for controlling an in-vehicle projection device. The electronic device for controlling an in-vehicle projection device provided in the embodiments of this application includes the following structure.

[0106] The memory stores at least one program instruction for controlling the vehicle-mounted projection device. The processor, when executed, causes the vehicle to implement the steps of the control method for the vehicle-mounted projection device. Depending on the implementation, the processor may be one or more types of processors, including but not limited to DSP (digital signal processor), ASIC (application-specific integrated circuit), FPGA (field-programmable gate array), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc., and their number can be determined according to actual needs.

[0107] In some other possible implementations, this application also provides a computer program (product) including computer program / instructions, which are executed by a processor to enable the device to implement the steps of the control method for the vehicle-mounted projection device described above.

[0108] In some other possible embodiments, this application also provides a computer-readable storage medium storing program instructions for controlling an in-vehicle projection device, which, when executed by one or more processors, cause the vehicle to implement the steps of the control method for the in-vehicle projection device described above. The computer-readable storage medium can be a readable signal medium or a readable storage medium. A readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disc read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof.

[0109] In some other possible implementations, this application provides a vehicle, the vehicle including as follows Figure 1 The vehicle-mounted projection device described in several embodiments thereof.

[0110] It should also be noted that the terms "first," "second," etc. (if applicable) in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0111] The term "and / or" in the embodiments of this application is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0112] The above description is only for the purpose of enabling those skilled in the art to understand the technical solution of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application shall be included within the scope of protection of this application.

Claims

1. A vehicle-mounted projection device, characterized in that, The vehicle-mounted projection device includes: The projection device body (110) is used to generate a projection image based on the input projection signal; A support device (120) is provided for connecting the vehicle-mounted projection device and the vehicle. A rotating device (130) is connected between the projection device body (110) and the support device (120). The rotating device (130) includes a first rotating shaft (131) and a second rotating shaft (132), and the first rotating shaft (131) and the second rotating shaft (132) are not parallel. The control unit (140) is configured to, upon receiving a first projection instruction for projecting the projected image at a specified location, determine at least one target projection area among a plurality of reference projection areas calibrated within the vehicle based on driving conditions; if the specified location falls entirely within any of the at least one target projection area, control the rotating device (130) to perform a rotation operation based on the position of the target projection area; and, after the rotation operation is completed, control the projection device body (110) to project the projected image into the target projection area.

2. The vehicle-mounted projection device according to claim 1, characterized in that, The plurality of reference projection areas correspond to a plurality of rotation ranges. When the control unit controls the rotation device (130) to perform a rotation action according to the position of any of the target projection areas, it is configured as follows: The target rotation range is determined from the plurality of rotation ranges based on the position of any target projection area. The target rotation range includes a first rotation range corresponding to the first rotation axis (131) and a second rotation range corresponding to the second rotation axis (132). The rotating device (130) is controlled to perform a rotational action around the first rotation axis (131) within the first rotation range; The rotating device (130) is controlled to perform a rotational action around the second rotation axis (132) within the second rotation range.

3. The vehicle-mounted projection device according to claim 1, characterized in that, When the control unit (140) controls the projection device body (110) to project the projected image in any target projection area, it is configured to: The first distortion correction is performed on the projected image based on the position of any of the target projection areas; The projection device body (110) is controlled to project a first distortion-corrected projection image onto any target projection area.

4. The vehicle-mounted projection device according to claim 2, characterized in that, The plurality of reference projection regions correspond to a plurality of reference distortion correction parameters. When the control unit (140) performs a first distortion correction on the projected image based on the position of any of the target projection regions, it is configured to: The target distortion correction parameter among the plurality of reference distortion correction parameters is determined based on the position of any target projection region. The projected image is subjected to a first distortion correction based on the target distortion correction parameters.

5. The vehicle-mounted projection device according to claim 4, characterized in that, The control unit (140) is further configured to, upon receiving the first projection instruction and when the specified position does not fall entirely within any of the target projection areas, correct the target distortion correction parameters according to the specified position; The projection image is subjected to a second distortion correction according to the corrected target distortion correction parameters, and the projection device body (110) is controlled to project the second distortion-corrected projection image at the designated position.

6. The vehicle-mounted projection device according to claim 1, characterized in that, The control unit (140) is further configured to generate a first warning message when the first projection instruction is received and the designated location does not fall entirely within the at least one target projection area, the warning message being used to indicate that projection is prohibited at the designated location.

7. The vehicle-mounted projection device according to claim 1, characterized in that, The support device (120) is a telescopic structure, with the first rotating shaft parallel to the direction of the telescopic movement and the second rotating shaft perpendicular to the direction of the telescopic movement; The control unit (140) is further configured to, when the lifting height of the telescopic structure does not reach the height threshold, determine a first value range of the first rotation angle and a second value range of the second rotation angle based on the lifting height; and generate a second warning message when the first rotation angle exceeds the first value range and / or the second rotation angle exceeds the second value range. Wherein, the first rotation angle is the angle at which the first rotating structure (131) rotates around the first rotating axis, the second rotation angle is the angle at which the second rotating structure (132) rotates around the second rotating axis, and the second warning information is used to prompt the rotation action to stop.

8. A control method for a vehicle-mounted projection device, characterized in that, The vehicle-mounted projection device includes a projection device body for generating a projected image based on an input projection signal, a support device for connecting the vehicle-mounted projection device and a vehicle, and a rotating device connected between the projection device body and the support device. The rotating device includes a first rotating axis and a second rotating axis, which are not parallel. The method includes: Receive a first projection instruction for projecting the projected image at a specified location; Determine at least one target projection area among multiple reference projection areas calibrated within the vehicle based on the driving conditions; If all the specified positions fall within any one of the at least one target projection areas, the rotating device is controlled to perform a rotation action according to the position of any one target projection area. Furthermore, after the rotation action is completed, the projection device body is controlled to project the projected image onto any target projection area.

9. An electronic device, characterized in that, include: A memory, wherein the memory stores program instructions for controlling the vehicle-mounted projection device; as well as, A processor, when the program instructions are executed by the processor, causes the vehicle to perform the method of claim 8.

10. A computer-readable storage medium, characterized in that, A computer-readable storage medium stores program instructions for controlling an in-vehicle projection device, which, when executed by one or more processors, cause the vehicle to perform the method of claim 8.

Images