Fault processing system and fault processing method of vehicle-mounted display product

Abstract

The invention relates to a fault processing system and a fault processing method for a vehicle-mounted display product. The fault processing system provided by the invention comprises a cache module and a source electrode driving module, wherein the cache module is connected with the source electrode driving module. Wherein fault image data of the vehicle-mounted display product is stored in the cache module, and the source electrode driving module is used for determining a display abnormal state value of the vehicle-mounted display product based on a fault detection function and outputting target fault image data acquired from the cache module to a screen of the vehicle-mounted display product. The target fault image data and the display abnormal state value have a mapping relationship. In the technical scheme provided by the invention, when the screen display is abnormal, the source electrode driving module can control the screen to display the target fault image data acquired from the cache module, so that a driver and passengers can intuitively understand the reason of the screen display abnormality to quickly make a response, and the driving safety is further improved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle-mounted display technology, and in particular to a fault handling system and a fault handling method for a vehicle-mounted display product. Background Art

[0002] Reliability and stability are the core design concepts of vehicle-mounted display products. To ensure driving safety, a fault detection function can be introduced into vehicle-mounted display products to detect the cause of sudden display abnormalities of vehicle-mounted display products.

[0003] For example, when the screen display of an in-vehicle display product is abnormal (such as a black screen), the fault detection function can determine the cause of the screen display abnormality by detecting the transmission status of the low-voltage differential signaling (LVDS).

[0004] However, the above method cannot enable the driver and passengers to quickly understand the reason for the abnormal screen display, which may cause panic among the driver and passengers when the screen displays abnormally, thereby affecting driving safety. Summary of the invention

[0005] The present application provides a fault handling system and a fault handling method for an in-vehicle display product.

[0006] In a first aspect, the present application provides a fault handling system for an in-vehicle display product, the fault handling system comprising: a cache module and a source driver module; the cache module is connected to the source driver module; the cache module is used to store fault image data of the in-vehicle display product; the source driver module is used to determine a display abnormality state value of the in-vehicle display product based on a fault detection function, and output target fault image data obtained from the cache module to the screen of the in-vehicle display product, and there is a mapping relationship between the target fault image data and the display abnormality state value.

[0007] In combination with the first aspect, in a possible implementation, the fault handling system also includes a control module, which includes a communication device; the control module is connected to the source driver module and the cache module respectively; the control module is used to receive the display abnormality status value from the source driver module based on the communication device, and output the target fault image data obtained from the cache module according to the display abnormality status value to the source driver module.

[0008] In combination with the first aspect, in a possible implementation manner, the source driving module is further configured to output an activation signal for activating the communication device to the control module after determining the display abnormal state value.

[0009] In combination with the first aspect, in a possible implementation, the activation signal includes a high-level signal; the fault handling system also includes a hardware pin module, the hardware pin module includes a first pin, and the control module also includes an AND gate logic device; the first input end of the AND gate logic device is connected to the source driver module, the second input end of the AND gate logic device is connected to the first pin, and the output end of the AND gate logic device is connected to the communication device; the source driver module is also used to output a high-level signal to the first input end of the AND gate logic device after determining the display abnormal state value; the first pin is used to output a high-level signal to the second input end of the AND gate logic device; the AND gate logic device is used to output a high-level signal to the communication device based on the high-level signal input by the source driver module and the first pin.

[0010] In combination with the first aspect, in a possible implementation, the hardware pin module also includes a second pin, one end of the second pin is connected to the source driver module, and the other end of the second pin is connected to the first input end of the AND gate logic device; the source driver module is also used to output a high-level signal to the first input end of the AND gate logic device through the second pin after determining the display abnormal state value.

[0011] In combination with the first aspect, in a possible implementation, the display abnormality status value is used to indicate abnormal items of the vehicle-mounted display product. When the number of the abnormal items is multiple, the number of target fault images displayed on the screen is one or more.

[0012] In a second aspect, the present application provides a fault handling method for a vehicle-mounted display product, the method being applied to a source driver module in a fault handling system as shown in the first aspect, the fault handling system also including a cache module, the cache module storing fault image data of the vehicle-mounted display product, the source driver module being connected to the cache module, the method comprising: determining a display abnormality state value of the vehicle-mounted display product based on a fault detection function; obtaining target fault image data from the cache module according to the display abnormality state value, the target fault image data having a mapping relationship with the display abnormality state value; and outputting the target fault image data to a screen of the vehicle-mounted display product.

[0013] In combination with the second aspect, in a possible implementation, the fault handling system also includes a control module, the control module includes a communication device, and the control module is connected to the source driver module and the cache module respectively; the acquiring the target fault image data from the cache module according to the display abnormal state value includes: sending the display abnormal state value to the control module so that the control module acquires the target fault image from the cache module according to the display abnormal state value; receiving the target fault image from the control module.

[0014] In combination with the second aspect, in a possible implementation manner, the method further includes: after determining the display abnormal state value, outputting an activation signal for activating the communication device to the control module.

[0015] In combination with the second aspect, in a possible implementation, the activation signal includes a high-level signal, the fault handling system also includes a hardware pin module, the hardware pin module includes a first pin, the control module also includes an AND gate logic device, the first input end of the AND gate logic device is connected to the source driver module, the second input end of the AND gate logic device is connected to the first pin, and the output end of the AND gate logic device is connected to the communication device; the activation signal output to the control module for activating the communication device includes: outputting a high-level signal to the first input end of the AND gate logic device so that the AND gate logic device outputs a high-level signal to the communication device.

[0016] In combination with the second aspect, in a possible implementation, the hardware pin module also includes a second pin, one end of the second pin is connected to the source driver module, and the other end of the second pin is connected to the first input end of the AND gate logic device; outputting a high-level signal to the first input end of the AND gate logic device includes: outputting a high-level signal to the second pin so that the second pin outputs a high-level signal to the first input end of the AND gate logic device.

[0017] In combination with the second aspect, in a possible implementation, the display abnormality status value is used to indicate abnormal items of the vehicle-mounted display product. When the number of the abnormal items is multiple, the number of target fault images displayed on the screen is one or more.

[0018] In a third aspect, the present application provides a fault handling device for an in-vehicle display product, the fault handling device having the function of implementing the fault handling method for an in-vehicle display product in the second aspect or any one of the implementations thereof. The fault handling device comprises various modules for implementing the method in the second aspect or any one of the implementations thereof, and each module can be implemented in the form of hardware and / or software.

[0019] In a fourth aspect, the present application provides a computer-readable medium storing a program code for execution by a device, wherein the program code includes a method for executing the method described in the second aspect or any possible implementation thereof.

[0020] In a fifth aspect, the present application provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the method described in the second aspect or any possible implementation thereof.

[0021] In the technical solution provided in the present application, when the screen display is abnormal, the source driver module can control the screen to display the target fault image data obtained from the cache module, so that the driver and passengers can intuitively understand the cause of the abnormal screen display and respond quickly, thereby improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A fault handling system for a vehicle-mounted display product provided in this application;

[0023] Figure 2 A schematic diagram of a target fault image provided in this application;

[0024] Figure 3 Another fault handling system for an in-vehicle display product provided by this application;

[0025] Figure 4 A fault handling system for another vehicle-mounted display product provided by the present application;

[0026] Figure 5 Another fault handling system for an in-vehicle display product provided by this application;

[0027] Figure 6 , Figure 7 A schematic diagram of another target fault image provided for this application;

[0028] Figure 8 A schematic diagram illustrating a fault handling method provided in the present application. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] To facilitate the understanding of the present application, the relevant concepts are first explained below.

[0031] 1. Taking a liquid crystal display (LCD) as an example, the screen image display process includes the following four steps.

[0032] Generation and transmission of image data: After the image processor generates digital image data, synchronization signals and clock signals, it converts the digital image data, synchronization signals and clock signals into differential signals through a low-voltage differential signaling (LVDS) transmitter, and transmits the differential signals to an LVDS receiver through multiple LVDS channels. This application does not limit the location of the LVDS transmitter.

[0033] Signal processing: The LVDS receiver converts the received differential signal into a single-ended digital signal; the deserializer deserializes the single-ended digital signal output by the LVDS receiver into parallel data. This application does not limit the location of the LVDS receiver and the deserializer.

[0034] Timing control and data transmission: The timing controller (TCON) generates timing signals for controlling source and gate drive, such as row scanning sequence, data latch control signal, etc., by analyzing synchronization signals and clock signals, and sends image data to the source driver chip at the same time.

[0035] Pixel display control: The source driver chip generates an analog voltage based on the received image data and applies the analog voltage to the source of the thin film transistor (TFT) in the screen to control the display of the screen pixels. At the same time, the gate driver chip turns on the TFT in the screen row by row so that the source voltage can be written to the pixel capacitor. The pixel capacitor stores the voltage to control the orientation of the liquid crystal molecules, thereby changing the intensity and color of the light passing through the liquid crystal molecules, thereby realizing the display of the image on the screen.

[0036] 2. Source driver chip

[0037] The source driver chip can be understood as a source integrated circuit (source IC), which is used to drive the source of the TFT; it can also be understood as a timing embedded driver integrated circuit (TCON embeded driver IC, TED IC) formed by integrating the TCON and the source integrated circuit, or it can be understood as a touch and display driver integration (TDDI) chip.

[0038] 3. LVDS

[0039] LVDS signals include image data, clock (CLK) signals, synchronization signals, and control signals, so that they can be used for image data transmission, clock synchronization, and power management in screen display. Image data includes the red, green, and blue (RGB) information of pixels. The clock signal is used to receive data in the correct timing. The synchronization signal includes the horizontal synchronization signal (HSYNC) and the vertical synchronization signal (VSYNC), which are used to control the screen to refresh line by line and frame by frame. The control signal is used to enable the screen power supply and control the backlight.

[0040] 4. Serial peripheral interface (SPI) signal

[0041] SPI signals refer to the interface signals for high-speed serial communication between a microcontroller unit (MCU) and external devices. SPI signals include: serial clock (SCK), master output slave input (MOSI), master input slave output (MISO), and chip select (CS).

[0042] The technical problems to be solved by this application are described below.

[0043] Reliability and stability are the core design concepts of vehicle-mounted display products. To ensure driving safety, a fault detection function can be introduced into vehicle-mounted display products to detect abnormal display conditions of vehicle-mounted display products in real time.

[0044] For example, when an abnormality occurs in the LVDS signal communication, causing the screen display of the vehicle display product to be abnormal (such as a black screen), the fault detection function can detect the abnormal item by detecting the LVDS transmission status and store the detected data in the fault detection register, so that the source driver chip can determine the cause of the screen display abnormality by reading the data in the fault detection register.

[0045] However, the above method lacks user interaction, that is, after determining the cause of the abnormal screen display based on the fault detection function, there is a lack of a link to inform the driver and passengers of the cause of the abnormality, which may cause the driver and passengers to panic when the screen displays abnormalities, thereby affecting driving safety.

[0046] In view of this, the present application provides a fault handling system and a fault handling method for an in-vehicle display product. In the technical solution provided by the present application, after determining the cause of the abnormal screen display based on the fault detection function, the target fault image data used to indicate the cause of the abnormal screen display is determined, and the screen is controlled to display the target fault image data, so that the driver and passengers can intuitively and effectively understand the cause of the abnormal screen display and respond quickly, thereby improving driving safety. The technical solution provided by the present application can provide useful information to the driver and passengers to instruct them to respond quickly in the event of abnormal or failed communication between the screen and the system, thereby ensuring driving safety.

[0047] Figure 1 A fault handling system for a vehicle-mounted display product is provided in this application. Figure 1 The fault handling system 100 shown includes a cache (flash) module 110 and a source driver module 120, and the cache module 110 is connected to the source driver module 120. Optionally, the source driver module 120 is a source driver chip.

[0048] The cache module 110 is used to store fault image data of the vehicle-mounted display product. For example, the cache module 110 may pre-store fault image data corresponding to the cause that may cause the screen display abnormality of the vehicle-mounted display product, or the cache module 110 may pre-store fault image data corresponding to the detection items of the fault detection function.

[0049] The source driving module 120 is used to determine the display abnormality state value of the vehicle-mounted display product based on the fault detection function; obtain the target fault image data from the cache module 110 based on the determined display abnormality state value, and convert the target fault image data into an analog voltage signal to control the screen of the vehicle-mounted display product to display the target fault image.

[0050] As an example, the detection items of the fault detection function are shown in the following table. It should be understood that the detection items given in the following table are only examples and are not intended to limit the technical solution of the present application.

[0051] Serial number Test items 0 LVDS clock lock 1 LVDS clock lost 2 LVDS enable lost (LVDS DE lost) 3 LVDS hsync lost 4 LVDS vsync lost 5 …… 6 …… 7 ……

[0052] Wherein, the status value of each detection item can be represented in binary. As an example, the normal status value of the detection item can be "0" and the abnormal status value can be "1". For example, if the LVDS clock is locked successfully, the status value of the detection item is "0", and if the LVDS clock fails to lock, the status value of the detection item is "1". Correspondingly, if the LVDS clock is successfully received, the status value of the detection item is "0", and if the LVDS clock is lost, the status value of the detection item is "1"; if the LVDS enable is successfully received, the status value of the detection item is "0", and if the LVDS enable is lost, the status value of the detection item is "1"; if the LVDS row synchronization is successfully received, the status value of the detection item is "0", and if the LVDS row synchronization is lost, the status value of the detection item is "1"; if the LVDS field synchronization is successfully received, the status value of the detection item is "0", and if the LVDS field synchronization is lost, the status value of the detection item is "1". Therefore, if the screen of the vehicle-mounted display product displays normally, the state value detected by the fault detection function is "00000000", and if the screen of the vehicle-mounted display product has a display abnormality, the state value detected by the fault detection function contains "1". For example, if the state value detected by the fault detection function is "00000010", it means that the reason for the abnormal screen display is the loss of the LVDS clock. It should be noted that the normal state value of the detection item can also be "1" and the abnormal state value can be "0", and this application does not limit this.

[0053] After detecting the status value of each detection item, the fault detection function can store the detected status value in the fault detection register, so that the source driver module 120 can determine the abnormal item by reading the data value in the fault detection register when the screen display is abnormal.

[0054] In a possible implementation, after the fault detection function detects the status value of each detection item, the detected status value can be converted into a hexadecimal value and then stored in the fault detection register to save storage space. In this implementation, the data value format in the fault detection register can be 0xaa, Ox is a fixed prefix of the data value, and aa is the hexadecimal value of the status value. It should be understood that the display abnormal status value is the status value of each detection item when the screen displays an abnormality, and the following is an explanation of the display abnormal status value as a hexadecimal value.

[0055] In the present application, the fault image data pre-stored in the cache module 110 may have a corresponding address bit, and there is a mapping relationship between the address bit and the display abnormal state value. For example, if the display abnormal state value is 06, it means that the screen display abnormality is caused by the loss of the LVDS clock and the loss of the LVDS enable, and the data read by the source driver module 120 from the fault detection register is 0x06. The source driver module 120 can obtain the target image data corresponding to the address bit that has a mapping relationship with 06 from the cache module 110. The present application does not impose specific restrictions on the mapping relationship.

[0056] Figure 1 In the fault handling system shown, the source driver module can quickly obtain the target fault image data directly from the cache module, so that the driver and passengers can quickly understand the cause of the abnormal screen display and respond, thereby improving driving safety.

[0057] Figure 2 A schematic diagram of a target fault image provided in this application. Figure 2 The target fault image shown is a fault image corresponding to the LVDS clock loss. Optionally, in addition to the abnormal cause, the target fault image may also include relevant prompt information, such as prompting the driver and passengers to go to the nearest maintenance point for inspection and the corresponding service phone number.

[0058] Figure 3 Another vehicle display product fault handling system provided by the present application. Figure 1 Compared with the fault handling system shown, Figure 3 The fault handling system 100 shown in the figure further includes a control module 130, and the control module 130 includes a communication device 131. Figure 3 As shown, the control module 130 is connected to the cache module 110 and the source driver module 120 respectively.

[0059] The source driving module 120 is further configured to output the display abnormal state value to the control module 130 , so as to instruct the control module 130 to obtain target fault image data having a mapping relationship with the display abnormal state value from the cache module 110 .

[0060] The control module 130 is used to receive the display abnormality status value from the source driver module 120 based on the communication device 131, obtain the target fault image data from the cache module 110 according to the display abnormality status value, and output the target fault image data to the source driver module 120 based on the communication device 131, so that the source driver module 120 controls the screen of the vehicle-mounted display product to display the target fault image.

[0061] Optionally, the control module may be an MCU, and the communication device may be an SPI communication device.

[0062] In this implementation, the source driver module obtains the target fault image data from the cache module through the control module. Figure 1 Compared with the above, in which the source driver module directly obtains the target fault image data from the cache module, the control module in this implementation can process the target fault image data obtained from the cache module, such as data filtering, denoising, etc., to improve the quality of the target fault image data. In addition, by using the control module, it is convenient to expand the functions of the system. For example, by integrating the communication protocol conversion function in the control module, the source driver module can communicate with different types of cache modules, thereby effectively alleviating the constraints on the communication protocol between the source driver module and the cache module.

[0063] In a possible implementation, the source driver module 120 is further used to output an activation signal for activating the communication device 131 to the control module 130 after determining that the display abnormal state value is displayed. For example, the source driver module 120 can directly output the activation signal to the communication device 131 to activate the communication device 131. In this implementation, the communication device 131 can communicate with the source driver module 120 and the cache module 110 after receiving the activation signal to shorten the working time of the communication device 131, thereby saving power consumption. In this implementation, the activation signal can include a high level signal, a low level signal, a pulse signal, etc., which is not limited here.

[0064] Figure 4 Another fault handling system for a vehicle-mounted display product provided by the present application. Figure 3 Compared with the fault handling system shown, Figure 4 The fault handling system 100 shown further includes a hardware pin module 140 , the hardware pin module 140 includes a first pin 141 , and the control module 130 further includes an AND gate logic device 132 .

[0065] like Figure 4 As shown, the first input end of the AND gate logic device 132 is connected to the source driver module 120, the second input end of the AND gate logic device 132 is connected to the first pin 141, and the output end of the AND gate logic device 132 is connected to the communication device 131. Among them, the first pin 141 is a high-level pin, which can output a high-level signal to the second input end of the AND gate logic device 132. In some implementations, the first pin can also be called a voltage input (Vin) pin, and the pin voltage can be 3.3 volts (V).

[0066] In this implementation, the source driver module 120 is also used to output a high level to the first input terminal of the AND gate logic device 132 after determining the display abnormal state value; and send the display abnormal state value to the communication device 131 to instruct the communication device 131 to obtain the target fault image data from the cache module 110 based on the display abnormal state value.

[0067] The AND gate logic device 132 is used to output a high level signal to the communication device 131 based on the high level signal input from the source driver module 120 and the first pin 141 to activate the communication device 131. The communication device 131 can communicate with the source driver module 120 and the cache module 110 after receiving the high level signal from the AND gate logic device 132. It should be noted that for the AND gate logic device 132, a high level will be output only when the first input terminal and the second input terminal are both high levels. It should be understood that in this implementation, the activation signal of the communication device 131 is a high level signal.

[0068] Figure 3 A method for activating a communication device by directly outputting an activation signal to the communication device through a source driver module is provided, which has the advantages of simple circuit, low hardware cost, short activation time of the communication device and high activation efficiency. Figure 3 The activation method provided only relies on a single activation signal output by the source driver module to activate the communication device, and lacks a verification mechanism for the activation signal. When the source driver module fails or is interfered with by the outside world, the activation signal may be output by mistake, causing the communication device to be activated by mistake, thereby causing abnormal behavior of the fault handling system, thereby affecting the reliability and stability of the fault handling system. For example, if the activation signal is a low-level signal, when the source driver module outputs a low level due to a low-level output failure (such as internal circuit damage, power supply abnormality, etc.), the communication device will be activated by mistake.

[0069] and Figure 3 Compared with the activation methods provided, Figure 4 The signal verification mechanism is added by adding hardware pin modules and AND gate logic devices. Figure 4 In the activation method provided, only when the source driver module outputs a high level and works together with the high level of the first pin, the AND gate logic device will output a high level signal to activate the communication device. Figure 3 The activation method provided, Figure 4 The activation method provided has higher reliability and stability, but at the same time the circuit complexity is higher and the hardware cost is also higher.

[0070] In some implementations, the first pin can be connected to other control signals so that the AND gate logic device will output a high level to activate the communication device only when the source driver module outputs a high level and the first pin also outputs a high level signal, so as to further improve the reliability of the communication device activation process.

[0071] Figure 5 Another vehicle display product fault handling system provided by the present application. Figure 4 Compared with the fault handling system shown, Figure 5 The hardware pin module 140 in the fault handling system 100 shown further includes a second pin 142 .

[0072] like Figure 5 As shown, one end of the second pin 142 is connected to the source driver module 120, and the other end of the second pin 142 is connected to the first input end of the AND gate logic device 132, that is, the source driver module 120 is connected to the first input end of the AND gate logic device 132 through the second pin 142.

[0073] In this implementation, the source driver module 120 outputs a high level signal to the first input terminal of the AND gate logic device 132 through the second pin 142. For example, after determining that the display abnormal state value is displayed, the source driver module 120 outputs a high level signal to the second pin 142, so that the second pin 142 outputs a high level to the first input terminal of the AND gate logic device 132, so that the AND gate logic device 132 outputs a high level to the communication device 131, thereby activating the communication device 131. It should be understood that in this implementation, the activation signal of the communication device 131 is a high level signal.

[0074] and Figure 4 Compared with the activation solutions provided, Figure 5 In the activation scheme provided, a second pin is added to isolate and buffer the output signal of the source driver module. For example, the second pin can filter the noise and other interference in the high-level signal output by the source driver module, thereby providing a more stable signal for the first input end of the AND gate logic device, thereby improving the activation reliability of the communication device. Figure 4 The activation method provided, Figure 5 The activation method provided has higher reliability and stability, but also has higher circuit complexity and hardware cost.

[0075] In some implementations, the second pin may also be referred to as a fault detection pin, that is, the level signal on the second pin may be used as a feedback signal of abnormal screen display. For example, when the level signal on the second pin is a high level signal, it indicates that the screen display is abnormal; when the level signal on the second pin is a low level signal, it indicates that the screen display is normal.

[0076] According to the above description, the display abnormal state value can be used to indicate abnormal items of the vehicle display product. In the case of multiple abnormal items, the fault image data corresponding to each abnormal item can be displayed on the screen through a target fault image, or the fault image data corresponding to each abnormal item can be displayed on the screen through a loop display of multiple target fault images. The display method of the abnormal cause can also be selected according to the needs of the driver and passengers, and this application does not limit this.

[0077] Figure 6 , Figure 7 A schematic diagram of another target fault image provided in this application. Figure 6 and Figure 7 The target fault images shown are used to indicate various abnormal items that cause screen display abnormalities, such as LVDS clock lock failure and LVDS clock loss. Figure 6 As shown in the figure, the two abnormal items of LVDS clock lock failure and LVDS clock loss can be displayed by one target fault image. Figure 7 As shown, the two abnormal items of LVDS clock lock failure and LVDS clock loss can be displayed by two target fault images, and the two target fault images are displayed cyclically.

[0078] Figure 8 A schematic diagram of a fault handling method provided in this application. Figure 8 As shown, the fault handling method may include S801 to S803.

[0079] S801, determining a display abnormality state value of an in-vehicle display product based on a fault detection function.

[0080] In the present application, the source driver module can determine the display abnormal state value of the vehicle display product based on the fault detection function. The specific implementation method of the source driver module determining the display abnormal state value can refer to the relevant description in the above embodiment and is not limited here.

[0081] S802, acquiring target fault image data from a cache module according to the display abnormality state value, wherein a mapping relationship exists between the target fault image data and the display abnormality state value.

[0082] In the present application, after the source driving module determines the display abnormal state value, the target fault image data can be directly obtained from the cache module according to the mapping relationship between the target fault image data and the display abnormal state value.

[0083] In a possible implementation, the source driver module may obtain the target fault image data from the cache module through the control module. For example, the source driver module may send a display abnormality state value to the control module, so that the control module obtains the target fault image from the cache module according to the display abnormality state value, and returns the obtained target fault image data to the source driver module.

[0084] In a possible implementation, the control module may include a communication device for communicating with the source driver module and the cache module. After determining that the display abnormal state value is displayed, the source driver module may output an activation signal to the control module to activate the communication device. The way in which the source driver module activates the communication device can refer to the relevant description in the aforementioned embodiment, which will not be repeated here.

[0085] S803, outputting target fault image data to the screen of the vehicle-mounted display product.

[0086] After the source driver module obtains the target fault image data, it outputs the target fault image data to the screen of the vehicle display product to control the screen to display the target fault image, so that the driver and passengers can understand the cause of the abnormal screen display and respond quickly to improve driving safety.

[0087] In the description of the present invention, it should be noted that the terms “first”, “second” and “third” are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0088] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0089] It should be emphasized that the above are only preferred embodiments of the present invention and do not limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A fault handling system for an in-vehicle display product, characterized in that: The fault processing system includes: a cache module and a source driver module; The cache module is connected to the source driver module; The cache module is used to store the fault image data of the vehicle-mounted display product; The source driving module is used to determine the display abnormality state value of the vehicle-mounted display product based on the fault detection function, and output the target fault image data obtained from the cache module to the screen of the vehicle-mounted display product, and there is a mapping relationship between the target fault image data and the display abnormality state value.

2. The fault handling system according to claim 1, characterized in that: The fault handling system further includes a control module, wherein the control module includes a communication device; The control module is connected to the source driver module and the cache module respectively; The control module is used to receive the display abnormal state value from the source driving module based on the communication device, and output the target fault image data obtained from the cache module according to the display abnormal state value to the source driving module.

3. The fault handling system according to claim 2, characterized in that: The source driving module is further configured to output an activation signal for activating the communication device to the control module after determining the display abnormal state value.

4. The fault handling system according to claim 3, characterized in that: The activation signal comprises a high level signal; The fault processing system further includes a hardware pin module, the hardware pin module includes a first pin, and the control module further includes an AND gate logic device; The first input end of the AND gate logic device is connected to the source driving module, the second input end of the AND gate logic device is connected to the first pin, and the output end of the AND gate logic device is connected to the communication device; The source driving module is further configured to output a high level signal to the first input terminal of the AND gate logic device after determining the display abnormal state value; The first pin is used to output a high level signal to the second input terminal of the AND gate logic device; The AND gate logic device is used to output a high level signal to the communication device based on the high level signal input from the source driving module and the first pin.

5. The fault handling system according to claim 4, characterized in that: The hardware pin module further includes a second pin, one end of which is connected to the source driving module, and the other end of which is connected to the first input end of the AND gate logic device; The source driving module is further configured to output a high level signal to the first input terminal of the AND gate logic device through the second pin after determining the display abnormal state value.

6. A method for troubleshooting a vehicle-mounted display product, characterized in that: A source driver module applied to a fault processing system, the fault processing system further comprising a cache module, the cache module storing fault image data of the vehicle-mounted display product, the source driver module being connected to the cache module, the method comprising: Determine the display abnormal state value of the vehicle-mounted display product based on the fault detection function; Acquire target fault image data from the cache module according to the display abnormal state value, wherein there is a mapping relationship between the target fault image data and the display abnormal state value; The target fault image data is output to a screen of the in-vehicle display product.

7. The fault handling method according to claim 6, characterized in that: The fault processing system further includes a control module, the control module includes a communication device, and the control module is connected to the source driver module and the cache module respectively; The acquiring target fault image data from the cache module according to the display abnormal state value includes: Sending the display abnormal state value to the control module, so that the control module acquires the target fault image from the cache module according to the display abnormal state value; The target fault image is received from the control module.

8. The fault handling method according to claim 7, characterized in that: The method further comprises: After determining the display abnormal state value, an activation signal for activating the communication device is output to the control module.

9. The fault handling method according to claim 8, characterized in that: The activation signal includes a high-level signal, the fault processing system also includes a hardware pin module, the hardware pin module includes a first pin, the control module also includes an AND gate logic device, a first input end of the AND gate logic device is connected to the source driver module, a second input end of the AND gate logic device is connected to the first pin, and an output end of the AND gate logic device is connected to the communication device; The outputting an activation signal for activating the communication device to the control module comprises: A high level signal is output to the first input terminal of the AND gate logic device, so that the AND gate logic device outputs a high level signal to the communication device.

10. The fault handling method according to claim 9, characterized in that: The hardware pin module further includes a second pin, one end of the second pin is connected to the source driver module, and the other end of the second pin is connected to the first input end of the AND gate logic device; Outputting a high level signal to the first input terminal of the AND gate logic device comprises: A high level signal is output to the second pin, so that the second pin outputs a high level signal to the first input terminal of the AND gate logic device.

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