A diagnostic information reporting method, a vehicle-mounted display module, and a vehicle-mounted display system

Abstract

The application discloses a diagnostic information reporting method, a vehicle-mounted display module and a vehicle-mounted display system. The method is applied to the vehicle-mounted display system. The vehicle-mounted display system comprises a whole vehicle control module and a vehicle-mounted display module which are in communication connection. The vehicle-mounted display module is used for receiving image information transmitted by the whole vehicle control module to display. The vehicle-mounted display module comprises a micro control unit and a screen driving component which is in communication connection with the micro control unit. The diagnostic information reporting method comprises the following steps: the micro control unit acquires state data of the screen driving component; the micro control unit converts the state data into two-dimensional code data; the micro control unit converts the two-dimensional code data into screen superimposed display format data; the screen superimposed display format data is stored in the screen driving component; and the screen driving component controls the vehicle-mounted display module to display the screen superimposed display format data. The application further discloses a vehicle-mounted display module and a vehicle-mounted display system.

Description

Technical Field

[0001] This invention relates to the field of vehicle design and manufacturing, and in particular to a method for reporting diagnostic information of an in-vehicle display system, an in-vehicle display module, and an in-vehicle display system. Background Technology

[0002] A vehicle display system typically includes a vehicle control module and a vehicle display module connected by communication. The vehicle control module transmits driving information such as images to the vehicle display module for display. When the vehicle display system malfunctions or when it is necessary to obtain the operating status information of the vehicle display module, the vehicle control module can send a command to the vehicle display module to obtain the operating status information. However, due to the limitations of the communication protocol between the vehicle control module and the vehicle display module, the diagnostic information that can be obtained from the vehicle display module is very limited, which is not conducive to the diagnosis and resolution of malfunctions. Summary of the Invention

[0003] To address the aforementioned problems, this invention proposes a diagnostic information reporting method. The method is applied to an in-vehicle display system, which includes a vehicle control module and an in-vehicle display module connected in communication. The in-vehicle display module receives and displays image information transmitted by the vehicle control module. The in-vehicle display module includes a microcontroller unit and a screen driver component connected in communication with the microcontroller unit. The method includes the following steps:

[0004] The microcontroller unit acquires the status data of the screen driver component;

[0005] The microcontroller unit converts the status data into QR code data;

[0006] The microcontroller unit converts the QR code data into a screen overlay display format;

[0007] The screen driver component stores the screen overlay display format data;

[0008] The screen driver component controls the vehicle display module to display the screen overlay display format data.

[0009] In one embodiment of the method described above, the screen driving component includes a timing control chip, a data control chip, an audio / video decoding element, a power management element, a backlight control element, and a touch and display driver integrated chip. The step of the microcontroller unit acquiring the state data of the screen driving component further includes:

[0010] The microcontroller unit detects whether the core functions of the timing control chip, data control chip, audio / video decoding element, power management element, backlight control element, and touch and display driver integrated chip are abnormal.

[0011] In one embodiment of the method described above, the step of the screen driving component displaying the screen overlay display format data via the screen overlay display function further includes:

[0012] The timing control chip in the screen driver component controls the vehicle display module to display the screen overlay display format data on its screen via the screen overlay display function.

[0013] In one embodiment of the method described above, the step of the microcontroller acquiring the state data of the screen driving component further includes:

[0014] When the vehicle display module malfunctions, the microcontroller receives an external command to obtain the status data of the screen driver component. The external command comes from the vehicle control module or an external detection device.

[0015] In one embodiment of the method of the present invention, the step of the microcontroller unit converting the status data into QR code data further includes:

[0016] The microcontroller receives instructions from the vehicle control module to convert the status data into QR code data; or the microcontroller automatically converts the status data into QR code data.

[0017] This invention also discloses an in-vehicle display module, wherein the device is applied to an in-vehicle display system, the in-vehicle display system further includes a vehicle control module communicatively connected to the in-vehicle display module, the in-vehicle display module is used to receive image information transmitted by the vehicle control module for display, and the in-vehicle display module includes...

[0018] Microcontroller unit; and

[0019] The screen driver component is communicatively connected to the microcontroller unit;

[0020] The microcontroller unit is used to acquire the status data of the screen driver component and convert the status data into QR code data; the microcontroller unit is also used to convert the QR code data into screen overlay display format data and store the screen overlay display format data in the screen driver component; the screen driver component is used to control the vehicle display module to display the screen overlay display format data.

[0021] In one embodiment of the device described above, the screen driving component includes a timing control chip, a data control chip, an audio / video decoding element, a power management element, a backlight control element, and a touch and display driver integrated chip. The microcontroller unit is used to acquire information on whether the core functions of the timing control chip, the data control chip, the audio / video decoding element, the power management element, the backlight control element, and the touch and display driver integrated chip are abnormal.

[0022] In one embodiment of the device described above, the timing control chip in the screen driver component controls the vehicle display module to display the screen overlay display format data on its screen via the screen overlay display function.

[0023] In one embodiment of the device described above, when the vehicle display module experiences a display abnormality, the microcontroller receives an external instruction to obtain the status data of the screen driving component, wherein the external instruction comes from the vehicle control module or an external detection device.

[0024] In one embodiment of the device described above, the microcontroller unit is used to receive instructions from the vehicle control module to convert the status data into QR code data; or the microcontroller unit is used to spontaneously convert the status data into QR code data.

[0025] This invention also discloses an in-vehicle display system, comprising,

[0026] The vehicle display module as described in any of the above; and

[0027] The vehicle control module is communicatively connected to the vehicle display module.

[0028] This invention discloses a diagnostic information reporting method, an in-vehicle display module, and an in-vehicle display system. By acquiring the status data of the screen driving component, converting the status data into QR code data, and then converting the QR code data into screen overlay display format data, the screen driving component controls the in-vehicle display module to display the screen overlay display format data. Thus, when acquiring diagnostic information from the in-vehicle display module, it is not limited by the communication protocol between the vehicle control module and the in-vehicle display module. The in-vehicle display module can report more diagnostic information, which is beneficial for anomaly diagnosis and resolution.

[0029] To further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are for reference and illustration only and are not intended to limit the present invention. Attached Figure Description

[0030] Figure 1 A flowchart illustrating a diagnostic information reporting method in one embodiment of the present invention is shown.

[0031] Figure 2 A block diagram illustrating an in-vehicle display system according to an embodiment of the present invention is shown.

[0032] Figure 3 A block diagram illustrating an in-vehicle display module according to an embodiment of the present invention is shown.

[0033] Figure 4 A block diagram illustrating a display system in another embodiment of the present invention is shown.

[0034] In the attached figures, the following labels are used:

[0035] 1…Vehicle display module

[0036] 2…Vehicle control module

[0037] 10… Microcontroller Unit

[0038] 20…Screen driver components

[0039] 21… Timing control chip

[0040] 22…Data Control Chip

[0041] 23… Audio and video decoding components

[0042] 24…Power Management Components

[0043] 25…backlight control element

[0044] 26…Touch and display driver integrated chip

[0045] 100…In-vehicle display system

[0046] Steps S1-S5… Detailed Implementation

[0047] The following specific embodiments, in conjunction with the accompanying drawings, illustrate the implementation methods disclosed in this invention. Those skilled in the art can understand the advantages and effects of this invention from the content disclosed in this specification. However, the following disclosure is not intended to limit the scope of protection of this invention. Without departing from the spirit of the invention, those skilled in the art can implement this invention with other different embodiments based on different viewpoints and applications.

[0048] For clarity, the figures shown in this invention are simplified schematic diagrams illustrating the basic structure of the invention. Therefore, the structures shown in the figures are not drawn to scale according to the actual shape and size of the implementation. For example, the dimensions of certain components have been enlarged for ease of explanation.

[0049] Furthermore, it should be understood that when a component such as a layer, film, region, or substrate is referred to as being "on" or "connected" to another component, it may be directly on or connected to the other component, or an intermediate component may also be present. Conversely, when a component is referred to as being "directly on" or "directly connected" to another component, no intermediate component exists. As used herein, "connection" can refer to physical and / or electrical connections. Moreover, "electrical connection" or "coupling" can refer to the presence of other components between the two components.

[0050] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this invention pertains. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having the same meaning as they have in the context of the relevant technology and this invention, and will not be interpreted as having an idealized or overly formal meaning unless expressly defined herein.

[0051] Furthermore, it should be understood that although the terms “first,” “second,” “third,” etc., may be used herein to describe various components, parts, regions, layers, and / or portions, these components, parts, regions, and / or portions should not be limited by these terms. These terms are used only to distinguish one component, part, region, layer, or portion from another. Therefore, the “first component,” “part,” “region,” “layer,” or “part” discussed below may be referred to as a second component, part, region, layer, or portion without departing from the teachings of this document.

[0052] It should be understood that references to "an embodiment," "embodiment," "example embodiment," etc., in the specification refer to the fact that the described embodiment may include specific features, structures, or characteristics, but does not necessarily include these specific features, structures, or characteristics. Furthermore, such expressions do not refer to the same embodiment. Moreover, when describing specific features, structures, or characteristics in conjunction with embodiments, whether or not explicitly described, it is indicated that incorporating such features, structures, or characteristics into other embodiments is within the knowledge of those skilled in the art.

[0053] The specification and subsequent claims use certain terms to refer to specific modules, components, or parts. Those skilled in the art will understand that users or manufacturers may use different names or terms to refer to the same module, component, or part. This specification and subsequent claims do not distinguish modules, components, or parts by differences in name, but rather by differences in function. The terms "comprising" and "including" used throughout the specification and subsequent claims are open-ended and should be interpreted as "including but not limited to." Furthermore, the term "connection" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connections made through other means.

[0054] Furthermore, in the following specification and claims, numerous terms will be referenced, which should be defined as having the following meanings. The singular forms “a” and “” include plural referents, unless the context clearly specifies otherwise. “Optional” or “optionally” indicates that an event or situation subsequently described may or may not occur, and that the description includes both the possibility that the event occurs and the possibility that the event does not occur.

[0055] When the in-vehicle display system malfunctions or requires access to the operational status information of the in-vehicle display module, the vehicle control module can send commands to the in-vehicle display module to obtain this information. However, due to limitations such as the communication protocol between the vehicle control module and the in-vehicle display module, the diagnostic information obtainable from the in-vehicle display module is very limited, hindering the diagnosis and resolution of malfunctions. To resolve this issue, please refer to [link to relevant documentation]. Figure 1 and Figure 2 , Figure 1 A flowchart illustrating a diagnostic information reporting method in one embodiment of the present invention is shown. Figure 2 A block diagram illustrating an in-vehicle display system 100 according to an embodiment of the present invention is shown.

[0056] This invention proposes a diagnostic information reporting method, which can be applied to an in-vehicle display system 100. The in-vehicle display system 100 includes a vehicle control module 2 and an in-vehicle display module 1, which are communicatively connected. In one embodiment, the vehicle control module 2 is a vehicle control unit (VCU). The in-vehicle display module 1 is used to receive and display image information transmitted by the vehicle control module 2. The in-vehicle display module 1 includes a microcontroller unit 10 (MCU) and a screen driver component 20 communicatively connected to the microcontroller unit 10. The diagnostic information reporting method includes:

[0057] In step S1: the microcontroller unit 10 acquires the status data of the screen driver component 20;

[0058] In step S2: the microcontroller unit 10 converts the status data into QR code data. In one embodiment, when converting the status data of the screen driver component 20 into a QR code, depending on the size of the QR code, hundreds to thousands of bytes of data can be stored. Compared to the communication protocol between the vehicle control module 2 and the vehicle display module 1, which typically only transmits a few bytes of information, this greatly increases the amount of status data that can be acquired / stored from the screen driver component 20, allowing for a more comprehensive understanding and determination of the operating status of the vehicle display module 1. Furthermore, the specific implementation method for converting the status data into a QR code is well-known in the art and will not be elaborated here.

[0059] In step S3: the microcontroller unit 10 converts the QR code data into OSD (On-Screen Display) format data;

[0060] In step S4: the screen driver component 20 stores screen overlay display format data; and

[0061] In step S5: the screen driver component 20 controls the vehicle display module 1 to display the screen overlay display format data, in other words, to display the aforementioned QR code on the vehicle display module 1.

[0062] Generally, when a display screen in a display system malfunctions, the computer host (e.g., the main unit, not the display screen itself) is used to confirm the relevant information before outputting the image to the display screen. This invention, however, relies on the vehicle display module 1 itself to acquire and display its own component status data. The OSD (On-Screen Display) function is an application function of the screen driver component 20 (specifically, one of its chips), generally used to display fault lights or to display a general image at a specific location when no image is displayed. This invention fully utilizes this function. After the vehicle display module 1 acquires the status data of the screen driver component 20 using its own microcontroller unit 10 and converts it into QR code data, the QR code data of the screen driver component 20 is displayed on the screen via the OSD function. In other words, this invention utilizes the vehicle display module 1 itself to trigger and provide relevant status information.

[0063] In one embodiment, a QR code displayed in the vehicle display module 1 is scanned using a QR code scanning device to obtain the status data of the screen driving component 20 of the vehicle display module 1. The QR code scanning device can be an electronic device capable of scanning QR codes, such as a smartphone, smart tablet, or smart head-mounted device, and the present invention is not limited thereto. Further, in one embodiment, the obtained status data of the screen driving component 20 of the vehicle display module 1 can be raw data (e.g., binary data), or it can be highly readable data content converted from the raw data and the status data corresponding to each raw data, so as to facilitate efficient diagnosis of anomalies in the vehicle display system 100 based on the status data of the screen driving component 20.

[0064] Please see Figure 3 , Figure 3 A block diagram illustrating an in-vehicle display module 1 according to an embodiment of the present invention is shown. In one embodiment, the screen driving component 20 includes a timing control chip 21 (TCON), a data control chip 22, an audio / video decoding element 23, a power management element 24, a backlight control element 25, and a touch and display driver integrated chip 26 (TDDI). Each chip / component can communicate with the microcontroller unit 10. The step of the microcontroller unit 10 acquiring the status data of the screen driving component 20 further includes: the microcontroller unit 10 acquiring whether the core functions of the timing control chip 21, the data control chip 22, the audio / video decoding element 23, the power management element 24, the backlight control element 25, and the touch and display driver integrated chip 26 are abnormal.

[0065] In one embodiment, the microcontroller unit 10 includes multiple pins, which can be connected to the status detection pins of the timing control chip 21 (TCON), data control chip 22, audio / video decoding element 23, power management element 24, backlight control element 25, and touch and display driver integrated chip 26 via corresponding connection lines. These connection lines can be I2C or GPIO lines, etc. In actual operation, each chip can be connected to the microcontroller unit 10 via different types of connection lines. When the vehicle display module 1 is powered on, the microcontroller unit 10 obtains the status detection information of each module in real time through each connection line. Since the connection relationship between the microcontroller unit 10 and each module is fixed, and the pins used by the microcontroller unit 10 to connect to other chips are fixed, it can be assumed that each chip or component has its own fixed address bit. The fixed address bit of the microcontroller unit 10 stores the real-time status detection information of the corresponding chip or component, thereby allowing the determination of whether its core function is abnormal based on this real-time status detection information. When the vehicle display system 100 malfunctions, the malfunction can be determined by checking whether the core functions of each chip and component in the screen driver component 20 are abnormal. This can also determine whether the malfunction is caused by the vehicle control module 2 or the vehicle display module 1.

[0066] In one embodiment, the step of displaying screen overlay display format data via screen overlay display function by screen driver component 20 further includes: timing control chip 21 in screen driver component 20 controlling vehicle display module 1 to display screen overlay display format data on its screen via screen overlay display function. In this embodiment, by using the screen overlay display function of vehicle display module 1 (specifically timing control chip 21) to actively display screen overlay display format data on its own screen, the data transmission path of this display method is different from the data transmission path from vehicle control component to vehicle display module 1 under normal circumstances. Thus, when some chips / components in vehicle display module 1 or vehicle control module 2 malfunction, for example, when vehicle display module 1 has no screen display, data can still be displayed on the screen via screen overlay display method to obtain the required information and diagnose the malfunction.

[0067] In one embodiment, before the step of the microcontroller unit 10 acquiring the status data of the screen driving component 20, the method further includes: when the vehicle display module 1 experiences a display abnormality, the microcontroller unit 10 receives an external instruction to acquire the status data of the screen driving component 20. The external instruction comes from the vehicle control module 2 or an external detection device. When the vehicle display module 1 experiences a display abnormality, in order to diagnose the abnormality, the vehicle control module 2 sends an external instruction to the microcontroller unit 10 of the vehicle display module 1 to display the status data of the chip or component of the vehicle display module 1 on the screen through a screen overlay display. In one embodiment, when the vehicle control module 2 experiences an abnormality and cannot successfully send and retrieve the screen overlay display function, the external instruction can also be sent to the microcontroller unit 10 of the vehicle display module 1 through an external detection device to perform screen overlay display. If the screen overlay display can be performed normally at this time, it can be determined that the vehicle control module 2 is abnormal based on the status data of the chip or component of the vehicle display module 1. The external detection device can also send the external instruction to perform screen overlay display independently, and the present invention is not limited thereto.

[0068] In this invention, when the vehicle display system 100 malfunctions, causing the vehicle display module 1 to display abnormally (no image displayed or displaying an abnormal image), the cause of the malfunction cannot be accurately determined. It could be due to damage to certain chips / components in the vehicle display module 1, leading to the malfunction of the vehicle display module 1 itself, or it could be due to a malfunction in the vehicle control module 2 (either itself or the transmission line between it and the vehicle display module 1), preventing the transmission of image information (or the transmission of correct image information) to the vehicle display module 1 (i.e., abnormal front-end display output). In this situation, this invention utilizes the microcontroller unit 10 of the vehicle display module 1 to obtain the status data of the screen driving component 20 and leverages the screen overlay display function inherent in the vehicle display module 1 itself. Even though the vehicle display module 1 is displaying abnormally, relevant information can still be displayed on the screen of the vehicle display module 1 to assist in malfunction diagnosis.

[0069] In one embodiment, the step of converting status data into QR code data by the microcontroller unit 10 further includes: the microcontroller unit 10 receiving an instruction from the vehicle control module 2 to convert the status data into QR code data; or the microcontroller unit 10 spontaneously converting the status data into QR code data. In this embodiment, the microcontroller unit 10 can receive instructions from the vehicle control module 2 or external detection equipment to perform screen overlay display processing, so as to facilitate the acquisition of required information and diagnosis of abnormalities by performing screen overlay display according to the instructions from the vehicle control module 2 or external detection equipment; furthermore, the microcontroller unit 10 can also periodically and spontaneously acquire status data, convert the status data into QR code data, and display the QR code data on the screen, so that users can understand the operating status of the vehicle display module 1 in a timely manner.

[0070] Please refer to the following: Figure 2 The present invention also discloses an in-vehicle display module 1, which can be applied to an in-vehicle display system 100. The in-vehicle display system 100 further includes a vehicle control module 2 communicatively connected to the in-vehicle display module 1. The in-vehicle display module 1 is used to receive image information transmitted by the vehicle control module 2 for display. The in-vehicle display module 1 includes a microcontroller unit 10 and a screen driver component 20 communicatively connected to the microcontroller unit 10. The microcontroller unit 10 is used to acquire the status data of the screen driver component 20 and convert the status data into QR code data; the microcontroller unit 10 is also used to convert the QR code data into screen overlay display format data and store the screen overlay display format data in the screen driver component 20; the screen driver component 20 is used to control the in-vehicle display module 1 to display the screen overlay display format data.

[0071] Please refer to the following: Figure 3In one embodiment, the screen driver assembly 20 includes a timing control chip 21, a data control chip 22, an audio / video decoding element 23, a power management element 24, a backlight control element 25, and a touch and display driver integrated chip 26. Each chip / element is communicatively connected to the microcontroller unit 10. The microcontroller unit 10 is used to determine whether the core functions of the timing control chip 21, data control chip 22, audio / video decoding element 23, power management element 24, backlight control element 25, and touch and display driver integrated chip 26 are malfunctioning. In actual operation, each chip can be connected to the microcontroller unit 10 via different types of connection cables. When the vehicle display module 1 is powered on, the microcontroller unit 10 acquires the status detection information of each module in real time through the various connection lines. Since the connection relationship between the microcontroller unit 10 and each module is fixed, and the pins used by the microcontroller unit 10 to connect with other chips are also fixed, it can be assumed that each chip or component has its own fixed address bit. The fixed address bit of the microcontroller unit 10 stores the real-time status detection information of the corresponding chip or component, so that the core function can be judged based on the real-time status detection information. By checking whether the core functions of each chip and component in the screen driver component 20 are abnormal, it can also be determined whether the abnormality of the vehicle display system 100 is caused by the vehicle control module 2 or the vehicle display module 1.

[0072] In one embodiment, the timing control chip 21 in the screen driver component 20 controls the vehicle display module 1 to display screen overlay display format data on its screen via the screen overlay display function. In this invention, the screen overlay display format data is displayed on the screen via the screen overlay display function because the data transmission path controlled by the timing control chip 21 for screen overlay display is different from the normal data transmission path from the vehicle control component to the vehicle display module 1. When some chips / components in the vehicle display module 1 or the vehicle control module 2 malfunction, for example, when the vehicle display module 1 has no display, the vehicle display module 1 can still display data on the screen via screen overlay display (i.e., information is displayed by the vehicle display module 1 itself) to obtain the required information and diagnose the malfunction.

[0073] In one embodiment, when the vehicle display module 1 experiences a display malfunction, the microcontroller unit 10 receives an external command to obtain the status data of the screen driver component 20. The external command originates from the vehicle control module 2 or an external detection device. When the vehicle display module 1 experiences a display malfunction, to diagnose the malfunction, the vehicle control module 2 sends an external command to the microcontroller unit 10 of the vehicle display module 1 to display the status data of the chip or component of the vehicle display module 1 on the screen via screen overlay display. In one embodiment, when the vehicle control module 2 malfunctions and cannot successfully send the call to the screen overlay display function, the external command can also be sent to the microcontroller unit 10 of the vehicle display module 1 via an external detection device to perform screen overlay display. If screen overlay display can be performed normally at this time, the status data of the chip or component of the vehicle display module 1 can be used to determine that the vehicle control module 2 is malfunctioning. The external detection device can also independently send the external command for screen overlay display; this invention is not limited to this.

[0074] In one embodiment, the microcontroller unit 10 is used to receive instructions from the vehicle control module 2 to convert status data into QR code data; or the microcontroller unit 10 is used to spontaneously convert status data into QR code data. In this embodiment, in addition to receiving instructions from the vehicle control module 2 or external detection equipment to perform screen overlay display processing, so as to perform screen overlay display according to the instructions from the vehicle control module 2 or external detection equipment, the microcontroller unit 10 can also periodically and spontaneously convert status data into QR code data and display the QR code data on the screen, so that users can understand the operating status of the vehicle display module 1 in a timely manner.

[0075] Please see Figure 4 , Figure 4 A block diagram illustrating an in-vehicle display system according to another embodiment of the present invention is shown. The present invention also discloses an in-vehicle display system 100, comprising an in-vehicle display module 1 as described above and a vehicle control module 2, wherein the vehicle control module 2 is communicatively connected to the in-vehicle display module 1.

[0076] The diagnostic information reporting method, vehicle display module, and vehicle display system disclosed in this invention enable the vehicle display module to autonomously acquire the status data of its own screen driver component, convert the status data into QR code data, and then convert the QR code data into screen overlay display format data. The screen driver component controls the vehicle display module to display the screen overlay display format data. Thus, the vehicle display module can acquire diagnostic information on its own, without being limited by the communication protocol between the vehicle control module and the vehicle display module. The vehicle display module can report more diagnostic information, which is beneficial for anomaly diagnosis and resolution.

[0077] The above-disclosed content is only a preferred and feasible embodiment of the present invention, and is not intended to limit the scope of the patent application of the present invention. Therefore, any equivalent technical changes made based on the contents of the present invention specification and drawings fall within the scope of the patent application of the present invention.

Claims

1. A diagnostic information reporting method, the method being applied to an in-vehicle display system, the in-vehicle display system comprising a vehicle control module and an in-vehicle display module communicatively connected, the in-vehicle display module being used to receive and display image information transmitted by the vehicle control module, the in-vehicle display module comprising a microcontroller unit and a screen driver component communicatively connected to the microcontroller unit, characterized in that... The method includes the following steps: The microcontroller unit acquires the status data of the screen driver component; The microcontroller unit converts the status data into QR code data; The microcontroller unit converts the QR code data into a screen overlay display format; The screen driver component stores the screen overlay display format data; The screen driver component controls the vehicle display module to display the screen overlay display format data.

2. The method according to claim 1, characterized in that, The screen driver component includes a timing control chip, a data control chip, an audio / video decoding element, a power management element, a backlight control element, and a touch and display driver integrated chip. The step of the microcontroller unit acquiring the status data of the screen driver component further includes: The microcontroller unit detects whether the core functions of the timing control chip, data control chip, audio / video decoding element, power management element, backlight control element, and touch and display driver integrated chip are abnormal.

3. The method according to claim 2, characterized in that, The step of displaying the screen overlay display format data via the screen overlay display function by the screen driving component further includes: The timing control chip in the screen driver component controls the vehicle display module to display the screen overlay display format data on its screen via the screen overlay display function.

4. The method according to claim 1, characterized in that, Before the step of the microcontroller acquiring the status data of the screen driver component, the following is also included: When the vehicle display module malfunctions, the microcontroller receives an external command to obtain the status data of the screen driver component. The external command comes from the vehicle control module or an external detection device.

5. The method according to claim 1, characterized in that, The step of the microcontroller unit converting the status data into QR code data further includes: The microcontroller receives instructions from the vehicle control module to convert the status data into QR code data; or the microcontroller automatically converts the status data into QR code data.

6. A vehicle-mounted display module, the device being applied to a vehicle-mounted display system, the vehicle-mounted display system further comprising a vehicle control module communicatively connected to the vehicle-mounted display module, the vehicle-mounted display module being used to receive image information transmitted by the vehicle control module for display, characterized in that, The vehicle-mounted display module includes... Microcontroller unit; as well as The screen driver component is communicatively connected to the microcontroller unit; The microcontroller unit is used to acquire the status data of the screen driver component and convert the status data into QR code data; the microcontroller unit is also used to convert the QR code data into screen overlay display format data and store the screen overlay display format data in the screen driver component; the screen driver component is used to control the vehicle display module to display the screen overlay display format data.

7. The vehicle-mounted display module according to claim 6, characterized in that, The screen driver component includes a timing control chip, a data control chip, an audio / video decoding element, a power management element, a backlight control element, and a touch and display driver integrated chip. The microcontroller unit is used to detect whether the core functions of the timing control chip, the data control chip, the audio / video decoding element, the power management element, the backlight control element, and the touch and display driver integrated chip are abnormal.

8. The vehicle-mounted display module according to claim 7, characterized in that, The timing control chip in the screen driver component controls the vehicle display module to display the screen overlay display format data on its screen via the screen overlay display function.

9. The vehicle-mounted display module according to claim 6, characterized in that, When the vehicle display module malfunctions, the microcontroller receives an external command to obtain the status data of the screen driver component. The external command comes from the vehicle control module or an external detection device.

10. The vehicle-mounted display module according to claim 6, characterized in that, The microcontroller unit is used to receive instructions from the vehicle control module to convert the status data into QR code data; or the microcontroller unit is used to spontaneously convert the status data into QR code data.

11. A vehicle-mounted display system, characterized in that, Include, The vehicle-mounted display module as described in any one of claims 6 to 10; and The vehicle control module is communicatively connected to the vehicle display module.

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