Display inspection apparatus, display inspection system, and display inspection method

Abstract

The application provides a display detection device, a display detection system and a display detection method, relates to the technical field of display, and can determine whether a display is abnormal according to a comparison result of first display information and reference display information. The display detection device comprises a display, a light ray collector and a detection circuit. The display comprises a plurality of display partitions, at least one display partition of the display emits display light; the light ray collector is arranged on an emission light path of the display light, is used for collecting the display light emitted from the at least one display partition, and converts the collected display light into first display information in the form of an electric signal and sends the first display information to the detection circuit; and the detection circuit is coupled with the light ray collector, is used for receiving the first display information, and compares the first display information with reference display information of the corresponding display partition to indicate whether the display is abnormal.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display detection device, a display detection system and a display detection method. BACKGROUND

[0002] In recent years, with the continuous development of economy, the number of cars owned by each place is also increasing year by year, and the car has become the most popular modern transportation tool.

[0003] The head up display (hereinafter referred to as HUD) as a kind of driving aid, it can project the speed, navigation, fuel and other driving information in the form of virtual image to the front of the driver, so that the driver can see the above driving information without looking down and turning his head, and improve the safety of vehicle driving.

[0004] The HUD includes a display, if the display fails, the virtual image projected by the HUD will not correctly display the driving information. SUMMARY

[0005] The present application provides a display detection device, a display detection system and a display detection method, which can determine whether the display is abnormal according to the comparison result of the first display information and the reference display information.

[0006] In the first aspect, the present application provides a display detection device, which includes an existing HUD. The HUD can include a target processor, a display and an optical path adjusting component. The target processor is coupled with the display and is used to control the display to display a picture. The display emits display light under the control of the target processor, and displays important information related to the terminal. The optical path adjusting component is arranged on the emission path of the display light. After the display light is projected to the optical path adjusting component, the display light is adjusted by the optical path adjusting component to form a virtual image at the target position of the terminal, so that the virtual image can be seen by the user when the user uses the terminal.

[0007] In some possible implementation manners, in addition to the target processor, the display and the optical path adjusting component, the HUD can further include a bridge chip supporting safety function and a display controller.

[0008] The bridge chip can be integrated between the signal transmission path of the target processor and the display, and is used to make the display detection system enter a safety state when safety warning information and the like cannot be correctly displayed. The safety state is manifested as: it can inform the driver that the current display detection system is abnormal.

[0009] For example, when the driver's seat belt warning, brake system failure, and other related icons cannot be normally displayed, the bridge chip can send a signal to the display to control the display to display a startup icon or other special icon (such as an exclamation mark) to enter a safe state. Of course, the above-mentioned safe state can also be embodied in other ways, such as an internal sound reminder, a vibrating steering wheel or seat, a lighted interior light, and the like.

[0010] The display controller can be integrated between the signal transmission path of the bridge chip and the display, for controlling the display to display a picture under the control of the target processor. When the display detection system is in a safe state, the display can also be controlled to display a startup icon or other special icon under the control of the bridge chip.

[0011] In the HUD, if any one of the target processor, the display, and the bridge chip fails, the display will not be able to correctly display the above-mentioned driving information, and the virtual image content seen by the driver will be incorrect, which can cause unnecessary safety accidents. Therefore, it is necessary to timely detect whether the target processor, the display, and the bridge chip fail. In the embodiments of the present application, the display detection system can also detect whether the target processor, the display, and the bridge chip fail in addition to forming a virtual image at the target position of the terminal.

[0012] For the target processor, the bridge chip, and the display controller, a first comparison module can be integrated in the target processor, a second comparison module can be integrated in the bridge chip, and a third comparison module can be integrated in the display controller to respectively detect whether the target processor, the bridge chip, and the display controller fail.

[0013] Specifically, the target processor can send first actual data and a first control signal to the first comparison module, and the first comparison module can generate first ideal data under the control of the first control signal. The first comparison module compares the received first actual data with the first ideal data, and if the difference between the first actual data and the first ideal data exceeds a first threshold range, it indicates that the target processor fails, and the first comparator sends the first ideal data to the bridge chip; otherwise, the target processor is normal, and the first comparator sends the first ideal data or the first actual data to the bridge chip.

[0014] The bridge chip receives the first ideal data or the first actual data, generates second actual data, and sends the second actual data to the second comparison module. The target processor can also send a second control signal to the second comparison module. Under the control of the second control signal, the second comparison module can generate second ideal data. The second comparison module compares the received second actual data with the second ideal data. If the difference between the second actual data and the second ideal data exceeds a second threshold range, it indicates that the bridge chip and / or the transmission path from the first comparison module to the bridge chip is faulty. The second comparison module sends the second ideal data to the display controller. Otherwise, the bridge chip and the transmission path from the first comparison module to the bridge chip are normal. The second comparison module sends the second ideal data or the second actual data to the display controller.

[0015] The display controller receives the second ideal data or the second actual data, generates third actual data, and sends the third actual data to the third comparison module. The target processor can also send a third control signal to the third comparison module. Under the control of the third control signal, the third comparison module can generate third ideal data. The third comparison module compares the received third actual data with the third ideal data. If the difference between the third actual data and the third ideal data exceeds a third threshold range, it indicates that the display controller and / or the transmission path from the second comparison module to the display controller is faulty. The third comparison module sends the third ideal data to the display. Otherwise, the display controller and the transmission path from the second comparison module to the display controller are normal. The third comparison module sends the third ideal data or the third actual data to the display.

[0016] The foregoing describes that any one of the target processor, the display, the bridge chip, and the display controller is faulty, which can cause the display to fail to correctly display the driving information. Moreover, the method for detecting whether the target processor, the bridge chip, and the display controller are faulty is introduced. As for the display, on the one hand, the parameters of the displays provided by various suppliers are different, and it is impossible to uniformly detect the display at the digital end as the foregoing target processor, bridge chip, and display controller. On the other hand, the inventors find that the current display detection system design does not deploy a device for back-sampling display light and a circuit for detecting display light. Therefore, the detection of the display in the display detection system is still in a state of technical blank.

[0017] Based on this, on the basis of the existing HUD, the display detection device can further include a light collector and a detection circuit. The display includes a plurality of display partitions, and at least one display partition of the display emits display light. The light collector is arranged on the light path of the display light, and is used to collect the display light emitted from at least one display partition and convert the collected display light into first display information in the form of an electrical signal, and send the first display information to the detection circuit. The detection circuit is coupled with the light collector, and is used to receive the first display information and compare the first display information with reference display information of the corresponding display partition to indicate whether the display is abnormal.

[0018] In the present application, the detection circuit receives the reference display information of at least one display partition and the first display information sent by the light collector, and compares the first display information and the reference display information of the same display partition. If the target processor is directly coupled with the display and directly controls the display to display the picture, when the difference between the first display information and the reference display information exceeds the fourth threshold range, it indicates that the display, and / or the transmission path from the target processor to the display, is faulty, resulting in abnormal display of the display; otherwise, the display and the transmission path from the target processor to the display are normal. Alternatively, if the target processor is indirectly coupled with the display and controls the display to display the picture through a bridge chip and / or a display controller, when the difference between the first display information and the reference display information exceeds the fourth threshold range, it indicates that the display, and / or the transmission path from the display controller (or the bridge chip) to the display, is faulty, resulting in abnormal display of the display; otherwise, the display and the transmission path from the display controller (or the bridge chip) to the display are normal.

[0019] In some possible implementations, the display detection device can further include a safety processing module. The safety processing module is coupled with the detection circuit. The detection circuit can send the comparison result of whether the display is normally displayed to the safety processing module. When the comparison result indicates that the display is abnormal, the safety processing module can take a series of measures to remind the user in response to the abnormal display of the display. In addition, when any one of the aforementioned display controller, the transmission path from the second comparison module to the display controller, the bridge chip, the transmission path from the first comparison module to the bridge chip, and the target processor is faulty, the safety processing module can also take the above measures to remind the user.

[0020] In some possible implementation manners, the display detection apparatus further includes a light path adjusting component and a mirror. The light path adjusting component is arranged on an exit light path of the display light and is configured to adjust the light path of the display light. The light path adjusting component includes a half-mirror, and the mirror is arranged on a light path between the half-mirror and the light ray collector. The mirror is configured to reflect the display light of at least one display subregion that passes through the half-mirror to the light ray collector.

[0021] The display light emitted by the display is projected to the half-mirror after passing through the lens group. Part of the display light is reflected by the half-mirror and projected to the human eye to form a virtual image in front of the driver. Another part of the display light is transmitted through the half-mirror and projected to the mirror. The display light is reflected by the mirror and projected to the light ray collector. The half-mirror can be the front windshield of the vehicle.

[0022] The light ray collector collects the display light that passes through the half-mirror and is wasted as the display light for detection, so that the display can be detected without affecting the intensity of the display light projected to the human eye.

[0023] In some possible implementation manners, the display detection apparatus further includes a light guide fiber. The light guide fiber is arranged on an exit light side of the display and is configured to transmit the display light of at least one display subregion to the light ray collector. The light guide fiber is arranged on the exit light side of the display, so that the display light emitted by at least one display subregion can be transmitted to the light ray collector by the light guide fiber.

[0024] In some possible implementation manners, the detection circuit further includes a first image processing module. Each display subregion includes at least one pixel region. The first image processing module is configured to convert the first display information into second display information. The pixel data amount of the second display information of each pixel region is less than the pixel data amount of the first display information of the pixel region.

[0025] The first image processing module can be used to perform dimension reduction processing on the first display information to obtain the second display information after dimension reduction. In this way, by reducing the pixel data amount of the second display information, the calculation amount in the comparison process of the detection circuit can be reduced.

[0026] In some possible implementation manners, the number of subpixels corresponding to the first display information is unchanged or reduced compared to the actual data of the subpixels in the display. The first display information is converted into second display information with a smaller pixel data amount. Specifically, the data bit width of each subpixel (for example, a red subpixel, a green subpixel, and a blue subpixel) can be reduced.

[0027] In some possible implementation manners, the number of sub-pixels corresponding to the first display information is unchanged or reduced compared to the actual data of the sub-pixels in the display 102, and the first display information is converted into second display information with a smaller amount of pixel data. Specifically, the gray scale bit width of each sub-pixel (for example, a red sub-pixel, a green sub-pixel, and a blue sub-pixel) can also be reduced.

[0028] In some possible implementation manners, when the light collector collects display light, part of ambient light can also be collected by the light collector, thereby affecting the comparison result of the detection circuit. Based on this, the detection circuit further includes a second image processing module. The second image processing module is configured to perform filtering processing on the first display information or the second display information to obtain third display information. The third display information obtained through the filtering processing filters out ambient light other than display light, and improves the detection accuracy of the detection circuit.

[0029] Specifically, the process in which the second image processing module performs filtering processing on the first display information or the second display information to obtain third display information includes the following steps. The second image processing module is configured to obtain a first feature value of the first display information or the second display information. The first feature value is used to indicate display data of the display. The second image processing module is further configured to perform filtering processing on the first display information or the second display information according to the first feature value and reference display information to obtain the third display information.

[0030] In addition, in some possible implementation manners, part of color sub-pixels can be color-shifted before display light is projected to the light collector, for example, red sub-pixels are color-shifted, thereby affecting the comparison result. Based on this, if the display displays a full-color picture, the detection circuit can further perform gray scale conversion on the first display information (or the second display information or the third display information). The first display information (or the second display information or the third display information) obtained through the gray scale conversion can indicate a black-and-white picture, thereby improving the accuracy of the comparison result.

[0031] In some possible implementation manners, the target processor is further configured to send the reference display information to the detection circuit.

[0032] In a first case, the target processor sends the reference display information to the detection circuit when the first ideal data or the first actual data is sent, and the detection circuit stores the reference display information. When the detection circuit receives the first display information sent by the light collector, the detection circuit can directly call the reference display information stored in advance.

[0033] In a second case, the target processor can also send the reference display information to the detection circuit after the first ideal data or the first actual data is sent and before the detection circuit receives the first display information.

[0034] In the third case, the detection circuit receives the first display information sent by the light collector, and obtains the reference display information from the target processor.

[0035] In some possible implementation manners, the detection circuit includes a processing circuit. The processing circuit is configured to receive the second display information or the third display information. In a case where the comparison between the second display information (or the third display information) and the reference display information is implemented by software code, the processing circuit is further configured to execute the software code to compare the second display information (or the third display information) of the corresponding display partition with the reference display information, so as to indicate whether the display is abnormal.

[0036] In some possible implementation manners, the detection circuit includes a processing circuit and a comparison circuit. The processing circuit is configured to receive the second display information or the third display information. The processing circuit is further configured to send a control signal to the comparison circuit in response to the second display information or the third display information. The comparison circuit is configured to compare the second display information or the third display information of the corresponding display partition with the reference display information in response to the control signal, so as to indicate whether the display is abnormal.

[0037] In some possible implementation manners, the detection circuit is integrated in the target processor, so as to shorten the path between the target processor and the detection circuit.

[0038] In addition, the display detection apparatus can further include a memory. When any one of the aforementioned first image processing module, second image processing module, and comparison module exists in the form of software code, or when any one of the aforementioned first image processing module, second image processing module, and comparison module exists in the form of computer program, the computer program or software code can be stored on the memory. When the computer program or software code is executed, the display detection apparatus performs respective steps to implement the aforementioned functions.

[0039] In a second aspect, the present application provides a display detection system. The display detection system includes a terminal and the display detection apparatus of the first aspect. Display light emitted by the display of the display detection apparatus forms a virtual image at a target position of the terminal. The detection circuit of the display detection apparatus is configured to indicate whether the display is abnormal.

[0040] In the present application, the detection circuit of the display detection device receives the reference display information of at least one display partition and the first display information sent by the light collector, and compares the first display information of the same display partition with the reference display information. If the target processor is directly coupled with the display and directly controls the display to display the picture, when the difference between the first display information and the reference display information exceeds the fourth threshold range, it indicates that the display and / or the transmission path from the target processor to the display is faulty, resulting in abnormal display of the display; otherwise, the display and the transmission path from the target processor to the display are normal. Alternatively, if the target processor is indirectly coupled with the display and controls the display to display the picture through the bridge chip and / or the display controller, when the difference between the first display information and the reference display information exceeds the fourth threshold range, it indicates that the display and / or the transmission path from the display controller (or the bridge chip) to the display is faulty, resulting in abnormal display of the display; otherwise, the display and the transmission path from the display controller (or the bridge chip) to the display are normal.

[0041] In some possible implementations, the terminal is at least one of a car, an airplane, and a head-mounted device.

[0042] Taking the car or the airplane as an example, the virtual image can be formed in front of the driver's seat of the car or the airplane, and the display content of the virtual image can include the current speed, the fuel amount, and other driving information of the car or the airplane.

[0043] Taking the head-mounted device as an example, the virtual image can be formed in front of the eyes of a user wearing the head-mounted device, and the display content of the virtual image can be a movie, a game, or the like.

[0044] In a third aspect, the present application provides a display detection method applied to a display detection device, the display detection device including a display, a light collector, and a detection circuit; the display includes a plurality of display partitions, the light collector is located on an outgoing light path of display light, and the light collector is coupled with the detection circuit; the display detection method includes: emitting display light through at least one display partition of the display; collecting the display light emitted from the at least one display partition through the light collector, converting the collected display light into first display information in the form of an electrical signal, and sending the first display information to the detection circuit; and receiving, by the detection circuit, the first display information, comparing the first display information with reference display information of the corresponding display partition, and indicating whether the display is abnormal.

[0045] In the present application, the detection circuit receives the reference display information of the at least one display partition and the first display information sent by the light collector, and compares the first display information and the reference display information of the same display partition. If the target processor is directly coupled with the display and directly controls the display to display the picture, when the difference between the first display information and the reference display information exceeds the fourth threshold range, it indicates that the display and / or the transmission path from the target processor to the display is faulty, resulting in abnormal display of the display; otherwise, the display and the transmission path from the target processor to the display are normal. Alternatively, if the target processor is indirectly coupled with the display and controls the display to display the picture through the bridge chip and / or the display controller, when the difference between the first display information and the reference display information exceeds the fourth threshold range, it indicates that the display and / or the transmission path from the display controller (or the bridge chip) to the display is faulty, resulting in abnormal display of the display; otherwise, the display and the transmission path from the display controller (or the bridge chip) to the display are normal.

[0046] In some possible implementation manners, the display detection apparatus further includes a mirror and a light path adjusting component for adjusting the display light, and the light path adjusting component includes a half mirror; and the light collector collects the display light emitted from the at least one display partition by reflecting the display light of the at least one display partition that transmits through the half mirror to the light collector by using the mirror.

[0047] The display light emitted by the display is projected to the half mirror after being adjusted by the lens group. Part of the display light projected to the half mirror is reflected by the half mirror and projected to the human eye to form a virtual image in front of the driver. Another part of the display light projected to the half mirror is transmitted from the half mirror and projected to the mirror, and the display light is projected to the light collector after being reflected by the mirror. The half mirror can be the front windshield of the vehicle.

[0048] The light collector collects the display light that transmits through the half mirror and is wasted as the display light for detection, so that the display can be detected without affecting the intensity of the display light projected to the human eye.

[0049] In some possible implementation manners, the display detection apparatus further includes a light guide fiber; and the light collector collects the display light emitted from the at least one display partition by transmitting the display light of the at least one display partition to the light collector by using the light guide fiber. The display light emitted from the at least one display partition can be transmitted to the light collector by using the light guide fiber by arranging the light guide fiber on the light emitting side of the display.

[0050] In some possible implementations, receiving, by the detection circuit, the first display information, and comparing the first display information with the reference display information of the corresponding display partition to indicate whether the display is displaying abnormally, includes: receiving, by the detection circuit, the first display information, and performing image processing on the first display information; and indicating, by the detection circuit, whether the display is displaying normally according to the reference display information.

[0051] In the first case, each display partition includes at least one pixel region; and receiving, by the detection circuit, the first display information, and performing image processing on the first display information, includes: converting, by the detection circuit, the first display information into second display information; and the amount of pixel data of the second display information of each pixel region is less than the amount of pixel data of the first display information of the pixel region.

[0052] The first image processing module can be used to perform dimension reduction processing on the first display information to obtain second display information after dimension reduction. In this way, by reducing the amount of pixel data of the second display information, the amount of calculation in the comparison process of the detection circuit can be reduced.

[0053] In some possible implementations, the first display information is converted into second display information with a smaller amount of pixel data, in a case where the number of sub-pixels corresponding to the first display information is not changed or reduced compared with the actual number of sub-pixels in the display. Specifically, the data bit width of each sub-pixel (for example, a red sub-pixel, a green sub-pixel, and a blue sub-pixel) can be reduced.

[0054] In some possible implementations, the first display information is converted into second display information with a smaller amount of pixel data, in a case where the number of sub-pixels corresponding to the first display information is not changed or reduced compared with the actual number of sub-pixels in the display. Specifically, the data bit width of each sub-pixel (for example, a red sub-pixel, a green sub-pixel, and a blue sub-pixel) can be reduced.

[0055] In the second case, when the light collector collects display light, part of ambient light can also be collected by the light collector, thereby affecting the comparison result of the detection circuit. Based on this, the first display information or the second display information can also be filtered by the detection circuit to obtain third display information. The third display information after filtering processing filters out ambient light other than display light, and improves the detection accuracy of the detection circuit.

[0056] Specifically, the process of filtering the first display information or the second display information by the detection circuit to obtain the third display information specifically includes: obtaining a first characteristic value of the first display information or the second display information by detection; the first characteristic value is used to indicate display data of the display; and filtering the first display information or the second display information by the detection circuit to obtain the third display information according to the first characteristic value and reference display information.

[0057] In addition, in some possible implementations, part of the color sub-pixels may be color-shifted before the display light is projected to the light collector, for example, the red sub-pixel is color-shifted, thereby affecting the comparison result. Based on this, if the display displays a full-color picture, the detection circuit can also perform gray scale conversion on the first display information (or the second display information or the third display information), and the first display information (or the second display information or the third display information) after the gray scale conversion can indicate a black-and-white picture, thereby improving the accuracy of the comparison result.

[0058] In some possible implementations, the display detection apparatus further includes a target processor.

[0059] The display light emitted by the at least one display partition of the display includes: the target processor controls the display light emitted by the at least one display partition of the display. Before the display detection method compares the first display information with the reference display information of the corresponding display partition by the detection circuit to indicate whether the display displays abnormally, the display detection method further includes: the target processor sends the reference display information to the detection circuit.

[0060] In the first case, the target processor sends the reference display information to the detection circuit by the target processor when the first ideal data or the first actual data is sent, and the reference display information is stored by the detection circuit. When the first display information sent by the light collector is received by the detection circuit, the pre-stored reference display information can be directly called.

[0061] In the second case, the target processor can also send the reference display information to the detection circuit by the target processor before the first display information is received by the detection circuit after the first ideal data or the first actual data is sent by the target processor.

[0062] In the third case, the target processor can obtain the reference display information from the target processor when the first display information sent by the light collector is received by the detection circuit.

[0063] In some possible implementation manners, the comparison of the second display information of the corresponding display partition with the reference display information by the detection circuit to indicate whether the display is normally displayed comprises: receiving, by the detection circuit, the second display information or the third display information; and in a case where the comparison of the second display information (or the third display information) with the reference display information is implemented by software code, the processing circuit is further configured to execute the software code to compare the second display information (or the third display information) of the corresponding display partition with the reference display information to indicate whether the display is abnormally displayed.

[0064] In some possible implementation manners, the detection circuit comprises a processing circuit and a comparison circuit; and the comparison of the second display information of the corresponding display partition with the reference display information by the detection circuit to indicate whether the display is normally displayed comprises: receiving, by the processing circuit, the second display information or the third display information; sending, by the processing circuit, a control signal to the comparison circuit in response to the second display information or the third display information; and comparing, by the comparison circuit, the second display information or the third display information of the corresponding display partition with the reference display information in response to the control signal to indicate whether the display is abnormally displayed.

[0065] In a fourth aspect, the present application provides a computer readable storage medium, including a computer program or software code, which, when running on a display detection apparatus, causes the display detection apparatus to perform the steps of the first aspect.

[0066] In a fifth aspect, the present application provides a computer program, which includes instructions for performing the steps in any possible implementation manner of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0067] Figure 1 A relationship diagram of structures in a display detection apparatus and a light path diagram of display light are provided for an embodiment of the present application;

[0068] Figure 2 A display effect diagram of a HUD is provided for an embodiment of the present application;

[0069] Figure 3 A relationship diagram of structures in another display detection apparatus and a light path diagram of display light are provided for an embodiment of the present application;

[0070] Figure 4 A relationship diagram of structures in still another display detection apparatus and a light path diagram of display light are provided for an embodiment of the present application;

[0071] Figure 5A relationship diagram of structures in a display detection device and a light path diagram of display light according to another embodiment of the present application;

[0072] Figure 6a A division diagram of display partitions of a display according to an embodiment of the present application;

[0073] Figure 6b Another division diagram of display partitions of a display according to an embodiment of the present application;

[0074] Figure 7 A relationship diagram of structures in a display detection device and a light path diagram of display light according to another embodiment of the present application;

[0075] Figure 8 A relationship diagram of structures in a display detection device and a light path diagram of display light according to another embodiment of the present application;

[0076] Figure 9a A relationship diagram of structures in a display detection device and a light path diagram of display light according to another embodiment of the present application;

[0077] Figure 9b A relationship diagram of structures in a display detection device and a light path diagram of display light according to another embodiment of the present application;

[0078] Figure 10 An image processing effect diagram according to an embodiment of the present application;

[0079] Figure 11 A relationship diagram of structures in a display detection device and a light path diagram of display light according to another embodiment of the present application;

[0080] Figure 12 A flowchart of a display detection method according to an embodiment of the present application.

[0081] Reference Signs:

[0082] 101 - target processor; 1011 - first comparison module; 102 - display; 103 - light path adjustment assembly; 1031 - lens group; 1032 - half-mirror; 104 - bridge chip; 1041 - second comparison module; 105 - display controller; 1051 - third comparison module; 106 - light ray collector; 107 - detection circuit; 1071 - first image processing module; 1072 - second image processing module; 1073 - processing circuit; 1074 - comparison circuit; 108 - security processing module; 109 - mirror; 11 - display partition. DETAILED DESCRIPTION

[0083] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions 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.

[0084] The terms "first," "second," etc., used in the specification, embodiments, claims, and drawings of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or order. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can mean: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "Installation," "connection," "linking," etc., should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection within two elements. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, such as including a series of steps or units. A method, system, product, or device is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices. Terms such as “up,” “down,” “left,” and “right” are used only in relation to the orientation of the components in the accompanying drawings. These directional terms are relative concepts used for relative description and clarification, and they can change accordingly depending on the orientation of the components in the accompanying drawings.

[0085] This application provides a display detection system, which includes a terminal and a display detection device. The display detection device may include an existing HUD, such as... Figure 1 As shown, the HUD may include a target processor 101, a display 102, and a light path adjustment component 103. The target processor 101 is coupled to the display 102 and is used to control the display 102 to display images. Under the control of the target processor 101, the display 102 emits display light to display important information related to the terminal. The light path adjustment component 103 is disposed on the output light path of the display light. After the display light is projected onto the light path adjustment component 103, it is adjusted by the light path adjustment component 103 to form a virtual image at the target position of the terminal, so that the user can see the virtual image when using the terminal.

[0086] It should be noted that, first, the light path adjusting assembly 103 is arranged on the exit light path of the display light, that is, based on the arrangement positions of the display 102 and the light path adjusting assembly 103, and the exit direction of the display light, at least part of the display light exiting from the display 102 can be projected to the light path adjusting assembly 103. The following object arranged on the exit light path of the display light, or the object arranged on the light path between the other two objects, can be explained in this way, and the following will not be repeated.

[0087] Second, according to the type of the terminal and the actual needs, the above-mentioned target position can be any position relative to the terminal. In some possible implementations, the target position can be fixed, that is, the position of the virtual image relative to the terminal is fixed. In this case, the virtual image can present the warning icons, status icons, numbers and the like related to the terminal. In other possible implementations, the target position can also be variable, for example, the position of the display 102 changes randomly, the target position relative to the terminal also changes, and the position of the virtual image relative to the terminal is variable. In this case, the virtual image can present icons, linear icons, numbers and the like related to the terminal, which can change in size and shape.

[0088] The terminal can be a car, an airplane, a head-mounted device and the like suitable for a HUD.

[0089] For example, as shown in Figure 2 The virtual image can be formed in front of the driver's cabin of the car or the airplane, and the display content of the virtual image can include the current speed, fuel quantity and the like of the car or the airplane.

[0090] For example, as a head-mounted device, the virtual image can be formed in front of the eyes of the user wearing the head-mounted device, and the display content of the virtual image can be a movie, a game and the like.

[0091] Of course, the terminal can also be other devices, and the embodiments of the present application do not limit this. For the convenience of description, the terminal is taken as a car in the following description.

[0092] As shown in Figure 3 In addition to the target processor 101, the display 102 and the light path adjusting assembly 103, the HUD can also include a bridge chip 104 supporting a safety function and a display controller 105.

[0093] The bridge chip 104 can be integrated between the signal transmission path of the target processor 101 and the display 102, and used to make the display detection system enter a safety state when safety warning information and the like cannot be correctly displayed. The safety state is manifested as: the current display detection system can be abnormal.

[0094] For example, when icons related to driver not wearing a seatbelt warning or brake system malfunction cannot be displayed normally, the bridging chip 104 can send a signal to the display 102 to control the display 102 to display a power-on icon or other special icons (such as an exclamation mark) to enter a safe state. Of course, the above-mentioned safe state can also be reflected in other ways, such as through in-car audio alerts, vibration of the steering wheel or seat, or illumination of interior lights.

[0095] The aforementioned display controller 105 can be integrated between the bridge chip 104 and the display 102 signal transmission path, and is used to control the display 102 to display images under the control of the target processor 101. When the display detection system is in a safe state, the display 102 can also be controlled to display a power-on icon or other special icons under the control of the bridge chip 104.

[0096] In a HUD, if any one of the target processor 101, display 102, or bridging chip 104 malfunctions, the display 102 will fail to correctly display the aforementioned driving information, resulting in an incorrect virtual image seen by the driver and potentially causing unnecessary safety accidents. Therefore, it is essential to promptly detect whether the target processor 101, display 102, and bridging chip 104 are malfunctioning. In this embodiment, the display detection system, in addition to forming a virtual image at the target location on the terminal, can also detect whether the target processor 101, display 102, and bridging chip 104 are malfunctioning.

[0097] like Figure 4 As shown, for the target processor 101, bridge chip 104 and display controller 105, a first comparison module 1011 can be integrated in the target processor 101, a second comparison module 1041 can be integrated in the bridge chip 104, and a third comparison module 1051 can be integrated in the display controller 105 to detect whether the target processor 101, bridge chip 104 and display controller 105 are faulty.

[0098] Specifically, the target processor 101 can send first actual data and a first control signal to the first comparison module 1011. Under the control of the first control signal, the first comparison module 1011 can generate first ideal data. The first comparison module 1011 compares the received first actual data with the first ideal data. If the difference between the first actual data and the first ideal data exceeds a first threshold range, it indicates that the target processor 101 has malfunctioned, and the first comparator 1011 sends the first ideal data to the bridge chip 104; otherwise, the target processor 101 is normal, and the first comparator 1011 sends either the first ideal data or the first actual data to the bridge chip 104.

[0099] After the bridge chip 104 receives the first ideal data or the first actual data, the bridge chip 104 generates second actual data and sends the second actual data to the second comparison module 1041. The target processor 101 can also send a second control signal to the second comparison module 1041, and under the control of the second control signal, the second comparison module 1041 can generate second ideal data. The second comparison module 1041 compares the received second actual data with the second ideal data, and if the difference between the second actual data and the second ideal data exceeds a second threshold range, it indicates that the bridge chip 104 and / or the transmission path from the first comparison module 1011 to the bridge chip 104 is faulty, and the second comparison module 1041 sends the second ideal data to the display controller 105; otherwise, the bridge chip 104 and the transmission path from the first comparison module 1011 to the bridge chip 104 are normal, and the second comparison module 1041 sends the second ideal data or the second actual data to the display controller 105.

[0100] After the display controller 105 receives the second ideal data or the second actual data, the display controller 105 generates third actual data and sends the third actual data to the third comparison module 1051. The target processor 101 can also send a third control signal to the third comparison module 1051, and under the control of the third control signal, the third comparison module 1051 can generate third ideal data. The third comparison module 1051 compares the received third actual data with the third ideal data, and if the difference between the third actual data and the third ideal data exceeds a third threshold range, it indicates that the display controller 105 and / or the transmission path from the second comparison module 1041 to the display controller 105 is faulty, and the third comparison module 1051 sends the third ideal data to the display 102; otherwise, the display controller 105 and the transmission path from the second comparison module 1041 to the display controller 105 are normal, and the third comparison module 1051 sends the third ideal data or the third actual data to the display 102.

[0101] It should be noted that the first actual data, the second actual data and the third actual data are actual signals generated by the target processor 101, the bridge chip 104 and the display controller 105 respectively, and are used to instruct the display 102 to display a picture. The first ideal data, the second ideal data and the third ideal data are ideal signals generated by the target processor 101, the bridge chip 104 and the display controller 105 respectively, and are used to instruct the display 102 to display a picture. The first threshold range, the second threshold range and the third threshold range can be adaptively set to a reasonable range based on the needs of manufacturers or customers, and the embodiments of the present application do not limit this.

[0102] Of course, as Figure 1As shown, the target processor 101 can also directly control the display 102 to display the screen. For convenience of description, hereinafter, unless otherwise stated, the target processor 101, the display 102, the bridge chip 104 and the display controller 105 are all taken as examples to be described. Figure 3 The target processor 101 shown in the figure controls the display 102 to display the screen through the bridge chip 104 and the display controller 105.

[0103] The foregoing introduces that any one of the target processor 101, the display 102, the bridge chip 104 and the display controller 105 fails, which can cause the display 102 to fail to correctly display the driving information. Moreover, the method for detecting whether the target processor 101, the bridge chip 104 and the display controller 105 fail is introduced. As for the display 102, on the one hand, the parameters of the display 102 provided by various suppliers are different, and it is impossible to detect the display 102 at the digital end as the foregoing target processor 101, the bridge chip 104 and the display controller 105; on the other hand, the inventors find that the current display detection system design does not deploy a device for collecting display light and a circuit for detecting display light. Therefore, the detection of the display 102 in the display detection system is still in a technical blank state.

[0104] Based on this, as shown in the figure, the embodiment of the application provides a display detection device. Figure 5 As shown in the figure, the embodiment of the application provides a display detection device, which adds the light collector 106 and the detection circuit 107 on the basis of the existing HUD, avoids additional separate detection devices, and can save detection costs.

[0105] The display 102 includes a plurality of display partitions, and at least one display partition of the display 102 emits display light (the part of the dashed arrow in the figure represents the display light).

[0106] The light collector 106 is arranged on the light path of the display light, is used for collecting the display light emitted from the at least one display partition, and converts the collected display light into the first display information in the form of an electrical signal and sends the first display information to the detection circuit 107.

[0107] The detection circuit 107 is coupled with the light collector 106, is used for receiving the first display information, and compares the first display information with the reference display information of the corresponding display partition to indicate whether the display 102 displays abnormally.

[0108] On the basis of the foregoing, as shown in the figure, the embodiment of the application provides a display detection method. Figure 5As shown, the display detection apparatus can further include a safety processing module 108. The safety processing module 108 is coupled with the detection circuit 107. The detection circuit 107 can send the comparison result of whether the display 102 displays normally to the safety processing module 108. When the comparison result indicates that the display 102 displays abnormally, the safety processing module 108 can take a series of measures for the display 102 to display abnormally to remind the user.

[0109] For example, the safety processing module 108 can be coupled with the display 102, receive the comparison result of the display 102 displaying abnormally, and control the display 102 to reset. Alternatively, the safety processing module 108 can also be coupled with the target processor 101, receive the comparison result of the display 102 displaying abnormally, and control the display 102 to reset by using the target processor 101.

[0110] Alternatively, the safety processing module 108 can be coupled with the control circuit of the automobile, which can be coupled with at least one of the horn, seat, steering wheel, etc. of the automobile. The safety processing module 108 receives the comparison result of the display 102 displaying abnormally, and controls the horn to sound an alarm, or the seat to vibrate, or the steering wheel to vibrate, etc.

[0111] Of course, other ways to reset the display 102 can also be adopted, and other changes or alternatives that can be easily thought of should be covered within the protection scope of the present application.

[0112] In addition, any one of the aforementioned display controller 105, the transmission path from the second comparison module 1041 to the display controller 105, the bridge chip 104, the transmission path from the first comparison module 1011 to the bridge chip 104, and the target processor 101 can fail, and the safety processing module 108 can also take the aforementioned measures to remind the user.

[0113] In some possible implementations, the present embodiment does not limit the division manner of the display partition 11. Optionally, as shown in Figure 6a and Figure 6b As shown, each display partition 11 can include at least one pixel area, and each pixel area has a pixel unit. If the display 102 can display a full-color picture, each pixel unit includes at least three sub-pixels that can constitute three primary colors, and the three sub-pixels that constitute the three primary colors can be a red sub-pixel, a green sub-pixel, and a blue sub-pixel respectively; or the three sub-pixels that constitute the three primary colors can be a yellow sub-pixel, a cyan sub-pixel, and a magenta sub-pixel respectively. Of course, the display 102 of the present application can also display a black-and-white picture, and the present embodiment does not limit this.

[0114] As shown in Figure 6aAs shown, each display partition 11 contains the same number of sub-pixels. For example, each display partition 11 includes three pixel areas, and the three sub-pixel areas have a total of 9 sub-pixels.

[0115] Or, such as Figure 6b As shown, the number of subpixels contained in each display partition 11 is at least partially different. For example, some display partitions 11 include three pixel areas with a total of 9 subpixels; some display partitions 11 include four pixel areas with a total of 12 subpixels; and some display partitions 11 include two pixel areas with a total of 6 subpixels.

[0116] It should be noted that each display zone 11 of the display 102 can display an image. Based on this, the light collector 106 can collect the display light of some of the display zones 11 for detection by the detection circuit 107; the light collector 106 can also collect the display light of all display zones 11 for detection by the detection circuit 107.

[0117] The reason why the light collector 106 collects the display light of a portion of the display partition 11 for detection by the detection circuit 107 could be that when the display 102 is displaying a certain image, only a portion of the display partition 11 displays the image, while the other portion is black. Alternatively, it could be that the display detection device is used to detect whether a portion of the display partition 11 of the display 102 is displaying abnormally, without needing to detect whether the other portion of the display partition 11 is displaying abnormally.

[0118] In some possible implementations, the embodiments of this application do not limit the way the light collector 106 collects display light, as long as the light collector 106 can receive display light and convert the display light into a first display signal in the form of an electrical signal, so that the first display signal is transmitted in the form of an electrical signal between the light collector 106 and the detection circuit 107.

[0119] Specifically, in the first case, such as Figure 5 As shown, the display detection device also includes a reflector 109. The optical path adjustment assembly 103 may include a lens group 1031 and a semi-transparent mirror 1032. The lens group 1031 is disposed in the optical path between the display 102 and the semi-transparent mirror 1032, and the reflector 109 is disposed in the optical path between the semi-transparent mirror 1032 and the light collector 106.

[0120] The display light emitted by the display 102 is projected to the lens group 1031, and then is adjusted by the lens group 1031 and projected to the half-mirror 1032. Part of the display light projected to the half-mirror 1032 is reflected by the half-mirror 1032 and projected to the human eye, and forms a virtual image in front of the driver. Another part of the display light projected to the half-mirror 1032 is transmitted by the half-mirror 1032 and projected to the mirror 109, and then is reflected by the mirror 109 and projected to the light collector 106. The light collector 106 receives the display light and converts the display light into a first display signal in the form of an electric signal.

[0121] In this case, the light collector 106 collects the display light that is transmitted by the half-mirror 1032 and is wasted, as display light for detection, and can detect the display 102 without affecting the intensity of the display light projected to the human eye. In addition, the display 102 can be arranged on a driver seat, and the front windshield of the car can be used as the half-mirror 1032. Of course, the arrangement positions of the display 102 and the half-mirror 1032 can also be other positions, which are not limited in the embodiments of the present application.

[0122] In the second case, as shown in FIG. 1B, the display detection device further comprises a light guide fiber 110, which has a function of transmitting light. The embodiments of the present application arrange the light guide fiber 110 on the light emitting side of the display 102, and transmit the display light emitted from the at least one display sub-area 11 to the light collector 106. The light collector 106 receives the display light and converts the display light into a first display signal in the form of an electric signal. Figure 7

[0123] It should be noted that the embodiments of the present application do not limit the specific arrangement position of the light guide fiber 110, as long as the light guide fiber is arranged on the light emitting side of the display 102 and can transmit the display light to the light collector 106. Optionally, as shown in FIG. 1C, the light collector 106 can be arranged on the lens group 1031. Figure 7

[0124] Of course, the light collector 106 can also collect the display light in other manners, which are not limited in the embodiments of the present application.

[0125] In some possible implementation manners, the embodiments of the present application do not limit the specific structure and model of the light collector 106, as long as the light collector 106 has the functions of collecting the display light and converting the light signal into an electric signal. For example, the light collector 106 can be an emitron camera.

[0126] ​​In some possible implementation manners, the detection circuit 107 compares the first display information with the reference display information of the corresponding display partition 11, specifically including: the detection circuit 107 receives the reference display information of at least one display partition 11 and the first display information sent by the light ray collector 106, and compares the first display information with the reference display information of the same display partition 11. As shown in Figure 7 , if the target processor 101 is directly coupled with the display 102 and directly controls the display 102 to display a picture, and the difference between the first display information and the reference display information exceeds the fourth threshold range, it indicates that the display 102 and / or the transmission path from the target processor 101 to the display 102 is faulty, resulting in abnormal display of the display 102; otherwise, the display 102 and the transmission path from the target processor 101 to the display 102 are normal. Alternatively, as shown in Figure 4 , if the target processor 101 is indirectly coupled with the display 102 and controls the display 102 to display a picture through the bridge chip 104 and / or the display controller 105, and the difference between the first display information and the reference display information exceeds the fourth threshold range, it indicates that the display 102 and / or the transmission path from the display controller 105 (or the bridge chip) to the display 102 is faulty, resulting in abnormal display of the display 102; otherwise, the display 102 and the transmission path from the display controller 105 (or the bridge chip) to the display 102 are normal.

[0127] It should be noted that, first, the detection circuit 107 can compare the first display information and the reference display information of the same display partition 11 at the same time when receiving the first display information and the reference display information; or the detection circuit 107 can experience a delay after receiving the first display information and the reference display information, and then compare the first display information and the reference display information of the same display partition 11, which is not limited in the embodiment of the application. Considering the timely prompt of the driver display abnormality and avoiding unnecessary accidents, the detection circuit 107 of the embodiment of the application compares the first display information and the reference display information of the same display partition 11 at the same time when receiving the first display information and the reference display information.

[0128] Second, the process of comparing the first display information with the reference display information can be implemented by a hardware circuit or by software code, which is not limited in the embodiment of the application. The display detection device can further include a memory, and if the comparison process of the first display information and the reference display information is implemented by software code, the above software code can be stored in the memory.

[0129] Thirdly, the first display information is the actual signal corresponding to the picture displayed by the display 102. The reference display information is the ideal signal generated by the target processor 101, or the bridge chip 104, or the display controller 105, and used to instruct the display 102 to display the picture. The fourth threshold range can be adaptively set according to the requirements of the manufacturer or the customer, and the present application does not limit the reasonable range.

[0130] In some possible implementations, the target processor 101 can directly or indirectly control the display 102 to display the picture, regardless of whether the target processor 101 is directly coupled with the display 102. Those skilled in the art should know that the target processor 101 can control the display 102 to display the correct picture only when the target processor 101 determines what kind of picture the display 102 should display. Therefore, the target processor 101 can pre-store the information corresponding to the picture that the display 102 should display, i.e., the reference display information of the display 102. Moreover, the target processor 101 can also send the reference display information of the same frame picture to the detection circuit 107. In this case, the detection circuit 107 can be integrated in the target processor 101 to shorten the path between the target processor 101 and the detection circuit 107.

[0131] Specifically, the target processor 101 can send the reference display information to the detection circuit 107 for storage when the target processor 101 sends the first ideal data or the first actual data. The detection circuit 107 can directly call the pre-stored reference display information after receiving the first display information sent by the light collector 106.

[0132] Alternatively, the target processor 101 can also send the reference display information to the detection circuit 107 before the detection circuit 107 receives the first display information after the target processor 101 sends the first ideal data or the first actual data.

[0133] Alternatively, the detection circuit 107 can obtain the reference display information from the target processor 101 after receiving the first display information sent by the light collector 106. Compared with the above two methods, this method can not need to integrate a storage circuit in the detection circuit 107 for storing the reference display information, thereby saving the layout area occupied by the detection circuit 107.

[0134] In some possible implementations, the first display information and the reference display information can indicate the display data of the display 102, which can be, for example, luminance information, highlight information, gray scale information, etc.

[0135] Taking the luminance information of the picture displayed by the display 102 indicated by the first display information and the reference display information as an example, the first display information indicates the actual luminance of the picture displayed by the display 102, and the reference display information indicates the ideal luminance of the picture displayed by the display 102. Based on this, the specific process of comparing the first display information with the reference display information can include: accumulating the actual luminance of the plurality of sub-pixels in one display partition 11, accumulating the ideal luminance of the plurality of sub-pixels in one display partition 11, and comparing the accumulated values of the two.

[0136] Taking the highlight information of the picture displayed by the display 102 indicated by the first display information and the reference display information as an example, the first display information indicates the actual highlight when the display 102 displays a frame of picture, and the reference display information indicates the ideal highlight when the display 102 displays the same frame of picture. Based on this, the specific process of comparing the first display information with the reference display information can include: calculating the standard deviation of the actual highlight and the ideal highlight in each display partition 11 line by line.

[0137] Of course, the embodiments of the present application can also compare the first display information with the reference display information in other ways, such as hash calculation, cyclic redundancy code (CRC) based on the first display information and the reference display information, and the like. Other easily thought changes or substitutions should be covered within the protection scope of the present application.

[0138] In some embodiments, as shown in FIG. 1, the detection circuit 107 can further include a first image processing module 1071, which is configured to convert the first display information into second display information. The pixel data amount of each pixel region of the second display information is less than the pixel data amount of the first display information of the pixel region. Figure 8 That is, the first image processing module 1071 is used to perform dimension reduction processing on the first display information to obtain the second display information after dimension reduction. In this way, by reducing the pixel data amount of the second display information, the calculation amount in the comparison process of the detection circuit 107 can be reduced.

[0139] In some possible implementation manners, the first display information is converted into second display information with smaller pixel data amount under the condition that the number of sub-pixels corresponding to the first display information is not changed or reduced compared with the actual data of the sub-pixels in the display 102. Specifically, the data bit width of each sub-pixel (for example, red sub-pixel, green sub-pixel and blue sub-pixel) can be reduced.

[0140] For example, the first display information indicates a red sub-pixel with a data bit width of 8 bits, from 0 to 255, and can display 255 different red colors except 0. The second display information with a smaller pixel data amount indicates a red sub-pixel with a data bit width of 4 bits, from 0 to 15, and can display 15 different red colors except 0.

[0141] In another possible implementation, the first display information is converted into the second display information with a smaller pixel data amount when the number of sub-pixels corresponding to the first display information is unchanged or reduced compared to the actual data of the sub-pixels in the display 102. Specifically, the gray scale bit width of each sub-pixel (for example, a red sub-pixel, a green sub-pixel, and a blue sub-pixel) can also be reduced.

[0142] For example, the first display information indicates a display screen with a gray scale bit width of 8 bits, from 0 to 255, that is, the display screen displayed by the display 102 can have 256 different gray scales. The second display information with a smaller pixel data amount indicates a display screen with a gray scale bit width of 2 bits, from 0 to 3, that is, the display screen displayed by the display 102 can have 4 different gray scales.

[0143] In some embodiments, when the light collector 106 collects display light, part of ambient light can also be collected by the light collector 106, thereby affecting the comparison result of the detection circuit 107. Based on this, as shown in Figure 9a and Figure 9b The detection circuit 107 can further include a second image processing module 1072. As shown in Figure 10 The second image processing module 1072 performs filtering processing on the first display information or the second display information to obtain third display information. The third display information after filtering processing filters out ambient light other than display light, and improves the detection accuracy of the detection circuit 107.

[0144] Specifically, the second image processing module 1072 is configured to obtain a first feature value of the first display information or the second display information, and the first feature value is used to indicate display data of the display 102. The second image processing module 1072 is further configured to perform filtering processing on the first display information or the second display information according to the first feature value and reference display information to obtain third display information.

[0145] Taking the gray scale information as an example, the second image processing module 1072 can determine the ideal display gray scale of each sub-pixel and the outline of the display screen displayed by the display 102 according to the reference display information. Based on this, the gray scale threshold range of each sub-pixel can be set according to the reference display information, and the sub-pixel with a gray scale exceeding the gray scale threshold range is filtered; the sub-pixel with a gray scale within the gray scale threshold range retains its original gray scale.

[0146] For example, the second image processing module 1072 determines, according to the reference display information, that the gray scale threshold range of the sub-pixel with the coordinate (8, 200) is [15, 20], and the actual gray scale of the sub-pixel indicated by the first display information is 25, which is out of the gray scale threshold range, and thus the display information of the sub-pixel is filtered out.

[0147] For another example, the second image processing module 1072 determines, according to the reference display information, that the gray scale threshold range of the sub-pixel with the coordinate (1, 3) is [0, 3], and the actual gray scale of the sub-pixel indicated by the second display information is 2, which is within the gray scale threshold range, and thus the display information of the sub-pixel is retained.

[0148] In addition, it needs to be explained that, first, in the case where the detection circuit 107 simultaneously includes the first image processing module 1071 and the second image processing module 1072, the above description shows that the first display information is first processed by the dimension reduction to obtain the second display information, and then the second display information is processed by the filtering to obtain the third display information. Of course, in the case where the detection circuit 107 simultaneously includes the first image processing module 1071 and the second image processing module 1072, the first display information can also be first processed by the filtering and then processed by the dimension reduction, which is not limited in the embodiments of the application.

[0149] Second, the dimension reduction processing and the filtering processing can be realized by a hardware circuit or by software code. In other words, the first image processing module 1071 and the second image processing module 1072 can be a hardware circuit or software code. The display detection apparatus can further include a memory, and the software code for realizing the dimension reduction processing and the filtering processing can be stored in the memory.

[0150] In addition, in some embodiments, the display light can be color-shifted in part of the color sub-pixels before being projected to the light ray collector 106, for example, the red sub-pixel is color-shifted, thereby affecting the comparison result. Based on this, if the display 102 displays a full-color picture, the detection circuit 107 can further perform a gray scale conversion on the first display information (or the second display information or the third display information), and the first display information (or the second display information or the third display information) after the gray scale conversion can indicate a black-and-white picture, thereby improving the accuracy of the comparison result.

[0151] In addition, in some embodiments, as Figure 11As shown in FIG. 7, the detection circuit 107 can further include a processing circuit 1073. The processing circuit 1073 is configured to receive the second display information sent by the first image processing module 1071 or the third display information sent by the second image processing module 1072. In a case where the comparison between the second display information (or the third display information) and the reference display information is implemented by software code, the processing circuit 1073 is further configured to execute the software code to compare the second display information (or the third display information) of the corresponding display partition 11 with the reference display information, to indicate whether the display 102 is abnormal.

[0152] In some other embodiments, as shown in FIG. 8, in addition to the processing circuit 1073, the detection circuit 107 can further include a comparison circuit 1074. The processing circuit 1073 is configured to receive the second display information sent by the first image processing module 1071 or the third display information sent by the second image processing module 1072, to generate a control signal, and to send the control signal to the comparison circuit 1074. The comparison circuit 1074 is configured to compare the second display information (or the third display information) of the corresponding display partition 11 with the reference display information in response to the control signal, to indicate whether the display 102 is abnormal. Figure 9a Figure 9b It should be noted that the method of comparing the second display information (or the third display information) of the corresponding display partition 11 with the reference display information is the same as the method of comparing the first display information of the corresponding display partition 11 with the reference display information, and thus will not be described herein.

[0153] It should be noted that the method of comparing the second display information (or the third display information) of the corresponding display partition 11 with the reference display information is the same as the method of comparing the first display information of the corresponding display partition 11 with the reference display information, and thus will not be described herein.

[0154] The embodiments of the present application further provide a display detection method, applied to a display detection device. The display detection device includes a display 102, a light collector 106, and a detection circuit 107. The display 102 includes a plurality of display partitions 11. The light collector 106 is located on an outgoing light path of display light. The light collector 106 is coupled with the detection circuit 107. As shown in FIG. 9, the display detection method can be implemented by the following steps. Figure 12

[0155] S110, as shown in FIG. 10, display light (the part of the dashed arrow in the figure represents the display light) is emitted by at least one display partition 11 of the display 102. Figure 5

[0156] In some possible implementation manners, the embodiments of the present application do not limit the division manner of the display partitions 11. Optionally, as shown in FIG. 11 and FIG. 12, Figure 6a Figure 6b ​​​​As shown, each display partition 11 can include at least one pixel region, and each pixel region has a pixel unit. If the display 102 can display full-color pictures, each pixel unit includes at least three sub-pixels which can constitute three primary colors. The three sub-pixels which constitute three primary colors can be red sub-pixels, green sub-pixels and blue sub-pixels respectively. Alternatively, the three sub-pixels which constitute three primary colors can be yellow sub-pixels, cyan sub-pixels and magenta sub-pixels respectively. Of course, the display 102 of the present application can also display black-and-white pictures, and the embodiments of the present application do not limit this.

[0157] As shown in FIG. 1, the display 102 includes a plurality of display partitions 11. Each display partition 11 can display a picture. The display 102 can display a picture by displaying the picture in each display partition 11. Figure 6a As shown, the number of sub-pixels included in each display partition 11 is the same. For example, each display partition 11 includes three pixel regions, and the three pixel regions have a total of nine sub-pixels.

[0158] Alternatively, as shown, the number of sub-pixels included in each display partition 11 is at least partially different. For example, part of the display partitions 11 include three pixel regions, and the three pixel regions have a total of nine sub-pixels. Part of the display partitions 11 include four pixel regions, and the four pixel regions have a total of twelve sub-pixels. Part of the display partitions 11 include two pixel regions, and the two pixel regions have a total of six sub-pixels. Figure 6b S120, collecting, by the light collector 106, display light emitted from at least one display partition 11, and converting the collected display light into first display information in the form of an electrical signal, and sending the first display information to the detection circuit 107.

[0159] Each display partition 11 of the display 102 can display a picture. Based on this, the display light of part of the display partitions 11 can be collected by the light collector 106 for detection by the detection circuit 107. Alternatively, the display light of all the display partitions 11 can be collected by the light collector 106 for detection by the detection circuit 107.

[0160] For the case where the display light of part of the display partitions 11 is collected by the light collector 106 for detection by the detection circuit 107, the reason can be that when the display 102 displays a picture, only part of the display partitions 11 display the picture, and the other part of the display partitions 11 display a black picture. Of course, it can also be because the display detection device is used to detect whether part of the display partitions 11 of the display 102 display abnormally, and there is no need to detect whether the other part of the display partitions 11 of the display 102 display abnormally.

[0161]

[0162] ​In some possible implementation manners, the display detection device does not limit the manner in which the display light is collected by the light collector 106, as long as the light collector 106 can receive the display light and convert the display light into the first display signal in the form of an electrical signal, so that the first display signal is transmitted in the form of an electrical signal in the light collector 106 and the detection circuit 107.

[0163] Specifically, in a first case, as shown in FIG. 1, the display detection device further includes a mirror 109. The light path adjusting assembly 103 can include a lens set 1031 and a semi-transparent semi-reflective mirror 1032, the lens set 1031 is arranged on a light path between the display 102 and the semi-transparent semi-reflective mirror 1032, and the mirror 109 is arranged on a light path between the semi-transparent semi-reflective mirror 1032 and the light collector 106. Figure 5

[0164] The display light emitted by the display 102 is projected onto the lens set 1031, and is adjusted by the lens set 1031 and then projected onto the semi-transparent semi-reflective mirror 1032. Part of the display light projected onto the semi-transparent semi-reflective mirror 1032 is reflected by the semi-transparent semi-reflective mirror 1032 and projected onto the human eye, forming a virtual image in front of the driver. Another part of the display light projected onto the semi-transparent semi-reflective mirror 1032 is transmitted through the semi-transparent semi-reflective mirror 1032 and projected onto the mirror 109. The part of the display light is reflected by the mirror 109 and then projected onto the light collector 106. The light collector 106 receives the display light and converts the display light into the first display signal in the form of an electrical signal.

[0165] In this case, the display light that is transmitted through the semi-transparent semi-reflective mirror 1032 and wasted is collected by the light collector 106 as display light for detection, so that the display 102 can be detected without affecting the intensity of the display light projected onto the human eye. In addition, the display 102 can be arranged on a driver seat, and a front windshield of a car can be used as the semi-transparent semi-reflective mirror 1032. Of course, the display 102 and the semi-transparent semi-reflective mirror 1032 can also be arranged in other positions, and the embodiments of the present application do not limit the positions.

[0166] In a second case, as shown in FIG. 2, the display detection device further includes a light guide fiber 110, and the light guide fiber 110 has a function of transmitting light. The display detection device of the present application can transmit the display light emitted from the at least one display sub-area 11 to the light collector 106 by arranging the light guide fiber 110 on the light emitting side of the display 102. The light collector 106 receives the display light and converts the display light into the first display signal in the form of an electrical signal. Figure 7

[0167] ​​It should be noted that the embodiments of the present application do not limit the specific position of the light guide fiber 110. As long as the light guide fiber is arranged on the light emitting side of the display 102, and the display light can be transmitted to the light ray collector 106 through the light guide fiber 110, it is acceptable. Optionally, as shown in Figure 7 The light ray collector 106 can be arranged on the lens group 1031.

[0168] Of course, other ways can also be used to collect display light through the light ray collector 106, and the embodiments of the present application do not limit this.

[0169] In some possible implementations, the embodiments of the present application do not limit the specific structure and model of the light ray collector 106. As long as the light ray collector 106 has the functions of collecting display light and converting optical signals into electrical signals, it is acceptable. For example, the light ray collector 106 can be a photoelectric camera.

[0170] S130, the first display information is received by the detection circuit 107, and the first display information is compared with the reference display information of the corresponding display partition 11 to indicate whether the display 102 is displayed abnormally.

[0171] As shown in Figure 5 The display detection device can further include a safety processing module 108. The safety processing module 108 is coupled with the detection circuit 107. The comparison result of whether the display 102 is normally displayed can be sent to the safety processing module 108 through the detection circuit 107. When the comparison result indicates that the display 102 is displayed abnormally, a series of measures can be taken by the safety processing module 108 to remind the user in response to the abnormal display of the display 102.

[0172] For example, the safety processing module 108 can be coupled with the display 102 to receive the comparison result of the abnormal display of the display 102. When the comparison result indicates that the display 102 is displayed abnormally, the safety processing module 108 can be used to control the display 102 to reset.

[0173] Alternatively, the safety processing module 108 can also be coupled with the target processor 101 to receive the comparison result of the abnormal display of the display 102. When the comparison result indicates that the display 102 is displayed abnormally, the safety processing module 108 can be used to control the display 102 to reset by using the target processor 101.

[0174] Alternatively, the safety processing module 108 can be coupled with a control circuit of the vehicle, which can be coupled with at least one of a horn, a seat, a steering wheel, etc. of the vehicle. The safety processing module 108 receives the comparison result of the display 102 displaying abnormality, and when the comparison result indicates that the display 102 displays abnormality, the safety processing module 108 can control the horn to sound an alarm, or the seat to vibrate, or the steering wheel to vibrate, etc.

[0175] Of course, other ways of resetting the display 102 can also be adopted, and other easily conceivable changes or alternatives shall be covered within the protection scope of the present application.

[0176] In some possible implementations, the comparison of the first display information with the reference display information of the corresponding display partition 11 by the detection circuit 107 specifically includes: receiving, by the detection circuit 107, the reference display information of at least one display partition 11 and the first display information sent by the light collector 106, and comparing the first display information with the reference display information of the same display partition 11. For example, as shown in Figure 7 If the target processor 101 is directly coupled with the display 102 and directly controls the display 102 to display a picture, when the difference between the first display information and the reference display information exceeds the fourth threshold range, it indicates that the display 102, and / or the transmission path from the target processor 101 to the display 102, is faulty, resulting in display abnormality of the display 102; otherwise, the display 102 and the transmission path from the target processor 101 to the display 102 are normal. Figure 4 If the target processor 101 is indirectly coupled with the display 102 and controls the display 102 to display a picture through the bridge chip 104 and / or the display controller 105, when the difference between the first display information and the reference display information exceeds the fourth threshold range, it indicates that the display 102, and / or the transmission path from the display controller 105 (or the bridge chip) to the display 102, is faulty, resulting in display abnormality of the display 102; otherwise, the display 102 and the transmission path from the display controller 105 (or the bridge chip) to the display 102 are normal.

[0177] It should be noted that, first, the first display information and the reference display information of the same display partition 11 can be compared at the same time when the first display information and the reference display information are received by the detection circuit 107, or the first display information and the reference display information of the same display partition 11 can be compared after a delay after the first display information and the reference display information are received by the detection circuit 107, and the embodiments of the present application do not limit this. In order to timely prompt the driver of the display abnormality and avoid unnecessary accidents, the first display information and the reference display information of the same display partition 11 can be compared at the same time when the first display information and the reference display information are received by the detection circuit 107.

[0178] Second, the comparison between the first display information and the reference display information can be realized by a hardware circuit or by software code, and the embodiments of the present application do not limit this. The display detection device can further include a memory, and if the comparison between the first display information and the reference display information is realized by software code, the software code can be stored in the memory.

[0179] Third, the first display information is the actual signal corresponding to the picture displayed by the display 102. The reference display information is the ideal signal generated by the target processor 101, or the bridge chip 104, or the display controller 105, for instructing the display 102 to display a picture. The fourth threshold range can be adaptively set to a reasonable range based on the needs of manufacturers or customers, and the embodiments of the present application do not limit this.

[0180] In some possible implementations, whether the target processor 101 is directly coupled with the display 102 or not, the display 102 can be controlled to display a picture directly or indirectly by the target processor 101. Those skilled in the art should know that, in the case where it is predetermined that the display 102 should display a certain picture, the display 102 can be controlled to display the correct picture by the target processor 101. Therefore, the information corresponding to the picture that the display 102 should display, i.e., the reference display information of the display 102, can be pre-stored by the target processor 101. Moreover, the reference display information of the same frame picture can be sent to the detection circuit 107 by the target processor 101. In this case, the detection circuit 107 can be integrated in the target processor 101 to shorten the path between the target processor 101 and the detection circuit 107.

[0181] Specifically, when the target processor 101 sends out the first ideal data or the first actual data, the target processor 101 can send the reference display information to the detection circuit 107 for storage. When the detection circuit 107 receives the first display information sent by the light collector 106, the pre-stored reference display information can be directly called.

[0182] Alternatively, the target processor 101 can send the reference display information to the detection circuit 107 before the detection circuit 107 receives the first display information after the target processor 101 sends out the first ideal data or the first actual data.

[0183] Alternatively, when the detection circuit 107 receives the first display information sent by the light collector 106, the reference display information can be obtained from the target processor 101. Compared with the above two manners, this manner can not need to integrate a storage circuit in the detection circuit 107 for storing the reference display information, thereby saving the layout area occupied by the detection circuit 107.

[0184] In some possible implementation manners, the first display information and the reference display information can indicate display data of the display 102, which can be luminance information, highlight information, gray scale information, etc.

[0185] Taking the luminance information of a picture displayed by the display 102 as an example, the first display information indicates the actual luminance of the picture displayed by the display 102, and the reference display information indicates the ideal luminance of the picture displayed by the display 102. Based on this, the specific process of comparing the first display information with the reference display information can include: accumulating the actual luminance of a plurality of sub-pixels in one display partition 11, accumulating the ideal luminance of a plurality of sub-pixels in one display partition 11, and comparing the accumulated values.

[0186] Taking the highlight information of a picture displayed by the display 102 as an example, the first display information indicates the actual highlight when the display 102 displays a frame of picture, and the reference display information indicates the ideal highlight when the display 102 displays the same frame of picture. Based on this, the specific process of comparing the first display information with the reference display information can include: calculating the standard deviation of the actual highlight and the ideal highlight in each display partition 11 row by row.

[0187] Of course, the embodiment of the present application can also compare the first display information with the reference display information in other manners, for example, performing hash calculation, cyclic redundancy code check, etc. based on the first display information and the reference display information. Other changes or replacements that can be easily thought of should be covered within the protection scope of the present application.

[0188] In some embodiments, receiving the first display information by the detection circuit 107 and comparing the first display information with the reference display information of the corresponding display partition 11 to indicate whether the display 102 displays abnormally can include:

[0189] S131, receiving the first display information by the detection circuit 107 and performing image processing on the first display information.

[0190] Specifically, the reference display information of the corresponding display partition 11 can be obtained by the detection circuit 107 through the following steps: Figure 8 In some possible implementations, the detection circuit 107 can also convert the first display information into second display information, and the amount of pixel data of each pixel area of the second display information is less than that of the first display information of the pixel area. That is, the detection circuit 107 performs dimension reduction processing on the first display information to obtain the second display information after dimension reduction. In this way, by reducing the amount of pixel data of the second display information, the calculation amount in the comparison process of the detection circuit 107 can be reduced.

[0191] In one possible implementation, when the number of sub-pixels corresponding to the first display information is unchanged or reduced compared with the actual data of the sub-pixels in the display 102, the first display information is converted into second display information with a smaller amount of pixel data. Specifically, the data bit width of each sub-pixel (such as red sub-pixel, green sub-pixel and blue sub-pixel) can be reduced.

[0192] For example, the data bit width of the red sub-pixel indicated by the first display information is 8 bits, from 0 to 255, and except 0, 255 different red colors can be displayed. While the data bit width of the red sub-pixel indicated by the second display information with a smaller amount of pixel data is 4 bits, from 0 to 15, and except 0, 15 different red colors can be displayed.

[0193] In another possible implementation, when the number of sub-pixels corresponding to the first display information is unchanged or reduced compared with the actual data of the sub-pixels in the display 102, the first display information is converted into second display information with a smaller amount of pixel data. Specifically, the gray scale bit width of each sub-pixel (such as red sub-pixel, green sub-pixel and blue sub-pixel) can also be reduced.

[0194] For example, the gray scale bit width of the display picture indicated by the first display information is 8 bits, from 0 to 255, that is, the display picture displayed by the display 102 can have 256 different gray scales. While the gray scale bit width of the display picture indicated by the second display information with a smaller amount of pixel data is 2 bits, from 0 to 3, that is, the display picture displayed by the display 102 can have 4 different gray scales.

[0195] In some possible implementations, while the display light is collected by the light collector 106, part of the ambient light can also be collected by the light collector 106, thereby affecting the comparison result of the detection circuit 107. Based on this, the reference display information can be used to filter the first display information or the second display information, so as to obtain third display information. Figure 9a and Figure 9b In addition, the detection circuit 107 can also filter the first display information or the second display information to obtain third display information. The third display information obtained through the filtering processing filters out the ambient light other than the display light, and improves the detection accuracy of the detection circuit 107.

[0196] Specifically, the detection circuit 107 can obtain a first characteristic value of the first display information or the second display information, and the first characteristic value is used to indicate the display data of the display 102. In addition, the detection circuit 107 can filter the first display information or the second display information according to the first characteristic value and the reference display information, to obtain the third display information.

[0197] Taking the display data as the gray scale information as an example, the detection circuit 107 can determine the ideal display gray scale of each sub-pixel and the outline of the picture displayed by the display 102 according to the reference display information. Based on this, the detection circuit 107 can set a gray scale threshold range of each sub-pixel according to the reference display information, and filter the sub-pixel whose gray scale exceeds the gray scale threshold range; and the sub-pixel whose gray scale is within the gray scale threshold range retains the original gray scale.

[0198] For example, the detection circuit 107 can determine, according to the reference display information, that the gray scale threshold range of the sub-pixel with the coordinates (8, 200) is [15, 20], and the actual gray scale of the sub-pixel indicated by the first display information is 25, which exceeds the gray scale threshold range. Therefore, the display information of the sub-pixel is filtered out.

[0199] For another example, the detection circuit 107 can determine, according to the reference display information, that the gray scale threshold range of the sub-pixel with the coordinates (1, 3) is [0, 3], and the actual gray scale of the sub-pixel indicated by the second display information is 2, which is within the gray scale threshold range. Therefore, the display information of the sub-pixel is retained.

[0200] In addition, it should be noted that, first, in the case of the dimension reduction processing and the filtering processing, the above description shows that the dimension reduction processing is performed on the first display information to obtain the second display information, and then the filtering processing is performed on the second display information to obtain the third display information. Of course, the filtering processing can be performed on the first display information first, and then the dimension reduction processing is performed, which is not limited in the embodiments of the application.

[0201] Secondly, the dimension reduction processing and the filtering processing can be implemented by a hardware circuit or by software code. The display detection apparatus can further include a memory, and the software code for implementing the dimension reduction processing and the filtering processing can be stored in the memory.

[0202] In addition, in some embodiments, the display light can cause color deviation of some color sub-pixels, such as red sub-pixels, before being projected to the light collector 106, thereby affecting the comparison result. Based on this, if the display 102 displays a full-color picture, the first display information (or the second display information or the third display information) can be converted to a grayscale by the detection circuit 107, and the first display information (or the second display information or the third display information) after the grayscale conversion can indicate a black-and-white picture, thereby improving the accuracy of the comparison result.

[0203] In S132, the detection circuit 107 determines whether the display 102 displays normally according to the reference display information.

[0204] Specifically, in one possible implementation, the reference display information can be obtained by the detection circuit 107 from the display 102. Figure 10 As shown in FIG. 1, the detection circuit 107 can also receive the second display information or the third display information. In the case where the comparison between the second display information (or the third display information) and the reference display information is implemented by software code, the detection circuit 107 can also execute the software code to compare the second display information (or the third display information) of the corresponding display partition 11 with the reference display information, so as to indicate whether the display 102 displays abnormally.

[0205] In another possible implementation, as shown in FIG. 2, the detection circuit 107 can include a processing circuit 1073 and a comparison circuit 1074. Figure 9a and Figure 9b As shown in FIG. 2, the detection circuit 107 can include a processing circuit 1073 and a comparison circuit 1074. The processing circuit 1073 can receive the second display information or the third display information, generate a control signal, and send the control signal to the comparison circuit 1074. The comparison circuit 1074 can compare the second display information (or the third display information) of the corresponding display partition 11 with the reference display information in response to the control signal, so as to indicate whether the display 102 displays abnormally.

[0206] It should be noted that the method of comparing the second display information (or the third display information) of the corresponding display partition 11 with the reference display information is the same as the method of comparing the first display information of the corresponding display partition 11 with the reference display information, and thus will not be described herein.

[0207] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A display detection device, characterized in that, Includes a display, a light collector, a detection circuit, and a light path adjustment assembly; The display includes multiple display zones, and at least one of the display zones emits display light; The optical path adjustment component is disposed on the outgoing optical path of the display light and is used to adjust the optical path of the display light; The light collector is disposed on the output light path of the display light, and is used to collect the display light emitted from at least one of the display partitions, convert the collected display light into first display information in the form of an electrical signal, and send the first display information to the detection circuit; The detection circuit, in which the light collector is coupled, is used to receive the first display information and compare the first display information with the reference display information of the corresponding display partition to indicate whether the display is abnormal. The display detection device further includes a reflector, and the optical path adjustment component includes a semi-transparent and semi-reflective mirror. The reflector is disposed in the optical path between the semi-transparent and semi-reflective mirror and the light collector. The reflector is used to reflect the display light that has passed through at least one of the display zones through the semi-transparent and semi-reflective mirror to the light collector. Alternatively, the display detection device may further include a light guide fiber, and the light path adjustment assembly includes a lens group, with the light guide fiber disposed on the lens group for transmitting the display light of at least one of the display zones to the light collector.

2. The display detection device according to claim 1, characterized in that, The detection circuit further includes a first image processing module; each of the display partitions includes at least one pixel area; The first image processing module is used to convert the first display information into second display information, wherein the amount of pixel data of the second display information in each pixel area is less than the amount of pixel data of the first display information in that pixel area.

3. The display detection device according to claim 2, characterized in that, The detection circuit also includes a second image processing module; The second image processing module is used to filter the first display information or the second display information to obtain the third display information.

4. The display detection device according to claim 3, characterized in that, The second image processing module filters the first or second display information to obtain the third display information, specifically including: The second image processing module is used to acquire a first feature value of the first display information or the second display information; the first feature value is used to indicate the display data of the display. The second image processing module is further configured to perform filtering processing on the first display information or the second display information based on the first feature value and the reference display information to obtain third display information.

5. The display detection device according to claim 3 or 4, characterized in that, The display detection device also includes a target processor; The target processor is used to control the display to show the image and send the reference display information to the detection circuit.

6. The display detection device according to claim 5, characterized in that, The detection circuit includes a processing circuit; The processing circuit is used to receive the second display information or the third display information; The processing circuit is further configured to compare the second display information or the third display information of the corresponding display partition with the reference display information to indicate whether the display is displaying an abnormality.

7. The display detection device according to claim 5, characterized in that, The detection circuit includes a processing circuit and a comparison circuit; The processing circuit is used to receive the second display information or the third display information; The processing circuit is further configured to send a control signal to the comparison circuit in response to the second display information or the third display information; The comparison circuit is configured to, in response to the control signal, compare the second display information or the third display information of the corresponding display partition with the reference display information to indicate whether the display is displaying an abnormality.

8. The display detection device according to claim 6 or 7, characterized in that, The detection circuit is integrated into the target processor.

9. A display detection system, characterized in that, Includes the terminal and the display detection device according to any one of claims 1-8; The display light emitted from the display of the display detection device forms a virtual image at the target position of the terminal; The detection circuit of the display detection device is used to indicate whether the display shows an abnormality.

10. The display detection system according to claim 9, characterized in that, The terminal is at least one of a car, an airplane, and a head-mounted display device.

11. A display detection method, applied to a display detection device, characterized in that, The display detection device includes a display, a light collector, a detection circuit, and a light path adjustment component for adjusting the display light; the display includes multiple display zones, the light collector is located on the outgoing light path of the display light, and the light collector is coupled to the detection circuit; The display detection method includes: Display light is emitted through at least one of the display zones of the display; The light collector collects display light emitted from at least one of the display zones, converts the collected display light into first display information in the form of an electrical signal, and sends the first display information to the detection circuit. The detection circuit receives the first display information and compares it with the reference display information of the corresponding display partition to indicate whether the display is abnormal. The display detection device further includes a reflector, and the optical path adjustment component includes a semi-transparent and semi-reflective mirror; the step of collecting display light emitted from at least one of the display zones through the light collector includes: using the reflector to reflect the display light that has passed through the semi-transparent and semi-reflective mirror to the light collector. Alternatively, the display detection device may further include a light guide fiber, and the light path adjustment assembly may include a lens group; the step of collecting display light emitted from at least one of the display zones through the light collector may include: using the light guide fiber to transmit the display light from at least one of the display zones to the light collector, wherein the light guide fiber is disposed on the lens group.

12. The display detection method according to claim 11, characterized in that, The step of receiving the first display information through a detection circuit and comparing the first display information with reference display information of the corresponding display partition to indicate whether the display is abnormal includes: The detection circuit receives the first display information and performs image processing on the first display information. The detection circuit uses the reference display information to indicate whether the display is functioning correctly.

13. The display detection method according to claim 12, characterized in that, Each of the aforementioned display partitions includes at least one pixel area; The step of receiving the first display information through the detection circuit and performing image processing on the first display information includes: The detection circuit converts the first display information into the second display information. The amount of pixel data in the second display information of each pixel region is less than the amount of pixel data in the first display information of that pixel region.

14. The display detection method according to claim 13, characterized in that, The step of receiving the first display information through the detection circuit and performing image processing on the first display information includes: The detection circuit filters the first or second display information to obtain the third display information.

15. The display detection method according to claim 14, characterized in that, The step of filtering the first display information or the second display information through the detection circuit to obtain the third display information includes: The detection circuit acquires a first feature value of the first display information or the second display information; the first feature value is used to indicate the display data of the display. The detection circuit filters the first display information or the second display information based on the first feature value and the reference display information to obtain the third display information.

16. The display detection method according to claim 14 or 15, characterized in that, The display detection device also includes a target processor; The emission of display light through at least one of the display zones of the display includes: The target processor controls at least one of the display zones of the display to emit display light; Before comparing the first display information with the reference display information of the corresponding display partition through the detection circuit to indicate whether the display is abnormal, the display detection method further includes: The target processor sends the reference display information to the detection circuit.

17. The display detection method according to claim 16, characterized in that, The step of comparing the first display information with the reference display information of the corresponding display partition through the detection circuit to indicate whether the display is abnormal includes: The detection circuit receives the second display information or the third display information. The detection circuit retrieves the reference display information and compares the second or third display information of the corresponding display partition with the reference display information to indicate whether the display is abnormal.

18. The display detection method according to claim 16, characterized in that, The detection circuit includes a processing circuit and a comparison circuit; the step of comparing the first display information with the reference display information of the corresponding display partition through the detection circuit to indicate whether the display is abnormal includes: The processing circuit receives the second display information or the third display information. The processing circuit sends a control signal to the comparison circuit in response to the second display information or the third display information. The comparison circuit, in response to the control signal, compares the second or third display information of the corresponding display zone with the reference display information to indicate whether the display is malfunctioning.

Images