Intelligent cabin multi-screen control system and method

Abstract

The invention relates to the technical field of multi-screen control, in particular to an intelligent cockpit multi-screen control system and method, and the system comprises a cockpit main control board which is internally provided with a USB HUB chip and is used for transmitting a corresponding HID key value to a screen backboard according to the mapping relation between a preset HID key value and a screen ID and the screen backboard of a screen; an MCU control chip is arranged in the screen back plate, and the screen back plate is used for receiving the HID key value distributed by the USB HUB chip and sending the HID key value to the TCON chip and the touch screen chip of the corresponding screen; the TCON chip is used for calling a preset EDID parameter group according to the received HID key value and adjusting the display attribute of the display screen; and the touch screen chip is used for calling a preset touch parameter group according to the received HID key value and adjusting the touch attribute of the touch screen. According to the invention, the display of a plurality of screens with different specifications and the quick and convenient setting and optimization of the touch parameters are realized, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-screen control, and particularly to an intelligent cockpit multi-screen control system and method. Background Art

[0002] Currently, the number and types of screens in in-vehicle intelligent cockpits are increasing day by day, including different specifications such as LCD screens and OLED screens, and the interfaces include types such as LVDS, eDP, and MIPI. Parameters such as size, resolution, and frame rate are also different. The application of dual-connected screens, triple-connected screens, and even multi-connected screens is becoming more and more widespread, and the splicing methods mainly include direct physical connection and full lamination with a large glass cover plate. The former has a simple structure but uneven touch transition, while the latter has a good touch feeling but affects the coherence of different touch screens.

[0003] In an intelligent cockpit connected screen system, the display screen and the touch screen are the core components. Different connected screen splicing methods have a greater impact on the coherence and accuracy of the touch screen, while the impact on the display screen is mainly reflected in aspects such as the gap width between the screens. Its display effect more depends on the specifications and calibration degree of the screen itself. The multi-screen control function of in-vehicle intelligent cockpits is constantly developing, supporting both independent display and touch control of each screen, and also allowing splicing into an integral screen to display a complete picture or video. When multi-connected screens use the same specification screens, the display and touch parameters can be set independently or uniformly; but for multi-connected screens spliced with different specification screens, parameter setting is often difficult to unify, and even the same settings cannot be achieved. In the prior art, the parameters of each screen are independently operated and set. As an integral screen, the differences in display and touch effects of different blocks will affect the user experience, and manual setting is cumbersome. It is difficult for users to determine the optimal matching index, and there is an urgent need for a convenient setting method to achieve one-key optimization of the display and touch matching effects of multiple screens. Summary of the Invention

[0004] In view of this, the present invention provides an intelligent cockpit multi-screen control system and method to solve the problems that the independent setting of display and touch parameters of multi-connected screens leads to inconsistent overall screen effects, and manual setting is cumbersome and it is difficult to determine the optimal matching index, affecting the user experience.

[0005] In a first aspect, the present invention provides an intelligent cockpit multi-screen control system, and the system includes:

[0006] A cockpit main control board, which is built with a USB HUB chip, and the USB HUB chip is used to send corresponding HID key values to the screen backplanes of multiple screens according to the mapping relationship between preset HID key values and different screen IDs and the screen backplanes of the screens;

[0007] Multiple screen backplanes, each of which is provided with an MCU control chip. The MCU control chip is used to receive the HID key values allocated by the USB HUB chip, and according to the preset mapping relationship between the HID key values and the screen IDs, send the HID key values to the TCON chips and touch screen chips of the corresponding screens respectively;

[0008] The TCON chip, connected to the display screen, is used to call the preset EDID parameter group according to the received HID key value, adjust the display attributes of the display screen, and output a PWM signal to control the backlight brightness;

[0009] The touch screen chip, connected to the touch screen, is used to call the preset touch control parameter group according to the received HID key value, and adjust the touch control attributes of the touch screen.

[0010] In an optional implementation manner, the mapping relationship between the HID key values and different screen IDs and the screen backplanes is preset in the USB HUB chip through firmware, and the HID key values are transmitted to the MCU control chips of each screen backplane through the USB protocol.

[0011] In an optional implementation manner, the MCU control chip is further used for:

[0012] Receiving the original touch control data and touch control operation signals of the touch screen chip, forwarding the original touch control data to the cockpit main control board through the I2C interface, and dynamically adjusting the touch control parameter group according to the touch control operation signals.

[0013] In an optional implementation manner, the EDID parameter group includes brightness level, frame rate, color temperature and screen occupation ratio, and each group of EDID parameter groups is associated with at least one HID key value.

[0014] In an optional implementation manner, the touch control parameter group includes touch control reporting rate, touch control delay threshold and capacitance sensing sensitivity, and each group of touch control parameters is associated with at least one HID key value.

[0015] In an optional implementation manner, the cockpit main control board is turned on through a one-key reset. Through a user trigger instruction, the USB HUB chip sends a reset key value to the MCU control chip of the screen backplane to synchronously reset the parameters of all the display screens and the touch screens to the preset default values.

[0016] In an optional implementation manner, a backlight chip is provided in the screen backplane, and a backlight board is provided in the screen, and the backlight chips and the backlight boards correspond one by one;

[0017] The backlight chip is used to receive the PWM signal output by the TCON chip and control the backlight brightness of the backlight panel through the PWM signal; the PWM signal adjusts the backlight brightness level through the duty cycle, and the PWM signal is independent of the power configuration of the cockpit main control board, and is a control signal generated by the TCON chip according to the EDID parameter group.

[0018] In an optional implementation, the interface type of the screen includes one or more of an LVDS interface, an eDP interface, and a MIPI interface, and the TCON chip configures a corresponding deserializer or a direct signal path according to the interface type.

[0019] In an optional implementation, the USB HUB chip is also pre-installed with a plurality of groups of HID key value combinations, each group of the HID key value combinations corresponds to a parameter configuration of an application scenario, and the application scenarios include entertainment mode, driving mode and eye protection mode.

[0020] In a second aspect, the present invention provides a smart cockpit multi-screen control method, which is applied to the above-mentioned smart cockpit multi-screen control system, and the method includes:

[0021] The USB HUB chip of the cockpit main control board sends the corresponding HID key value to the screen back panels of multiple screens according to the mapping relationship between the preset HID key value and different screen IDs and the screen back panels of the screens;

[0022] The MCU control chip in the screen backplane sends the HID key value to the TCON chip and the touch screen chip of the corresponding screen respectively according to the preset mapping relationship between the HID key value and the screen ID;

[0023] The TCON chip calls a preset EDID parameter group according to the received HID key value, adjusts the display properties of the display screen, and outputs a PWM signal to control the backlight brightness;

[0024] The touch screen chip calls a preset touch parameter group according to the received HID key value to adjust the touch properties of the touch screen.

[0025] In a third aspect, the present invention provides a computer device, comprising: a memory and a processor, the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes a smart cockpit multi-screen control method according to the first aspect or any corresponding embodiment thereof by executing the computer instructions.

[0026] Fourthly, the present invention provides a computer-readable storage medium, on which computer instructions are stored, and the computer instructions are used to cause a computer to execute an intelligent cockpit multi-screen control method according to the first aspect or any corresponding embodiment thereof.

[0027] Fifthly, the present invention provides a computer program product, including computer instructions, and the computer instructions are used to cause a computer to execute an intelligent cockpit multi-screen control method according to the first aspect or any corresponding embodiment thereof.

[0028] The technical solution provided by the present invention may include the following beneficial effects:

[0029] The cockpit main control board is internally provided with a USB HUB chip, and multiple groups of HID key value combinations are preset in the USB HUB chip, corresponding to parameter configurations of different application scenarios. Users can flexibly select and switch modes according to actual needs. By adding an MCU chip to the screen backplane, the control functions of the display screen and the touch screen are integrated, reducing the system complexity, improving the system integration and reliability. Moreover, this MCU control chip can receive and transmit the I2C control signal of the touch screen, realizing efficient control and data processing of the touch screen, and ensuring the smoothness and accuracy of the touch operation. The TCON chip and the touch screen chip call the preset EDID parameter group and touch control parameter group according to the HID key value, realizing fine adjustment of the parameters of the display screen and the touch screen, and improving the display and touch performance.

[0030] Secondly, by coordinating the control of the EDID parameter group and the touch control parameter group of multiple screens, when used as an overall screen, the display and touch effects of each block are kept consistent, improving the user experience. There is no need to configure the main and secondary power supplies of the cockpit main control board. The backlight brightness is directly adjusted by the PWM signal output by the TCON chip, and the PWM signal control can realize multiple brightness level adjustments, with a better subjective experience.

[0031] In addition, through the one-key reset function, users can quickly set the display and touch parameters of all screens to the optimal matching, without manually entering the multi-level sub-menus for cumbersome settings, significantly improving the operation efficiency. It can not only adapt to screens of different sizes or specifications, but also realize the control of the display screen parameters of different interface types, making the system have stronger versatility and expandability. Description of the Drawings

[0032] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0033] Figure 1 is a schematic structural diagram of a multi-screen control system for an intelligent cockpit according to an embodiment of the present invention;

[0034] Figure 2 is a schematic data flow diagram of the multi-screen control system for an intelligent cockpit according to an embodiment of the present invention;

[0035] Figure 3 is a flowchart of a method for controlling multiple screens in an intelligent cockpit according to an embodiment of the present invention;

[0036] Figure 4 is a flowchart of another method for controlling multiple screens in an intelligent cockpit according to an embodiment of the present invention;

[0037] Figure 5 is a schematic hardware structure diagram of a computer device according to an embodiment of the present invention. Specific Embodiments

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0039] It should be noted that for the instrument screen, the center console screen, and the co-pilot screen used in the current in-vehicle intelligent cockpit, there are separate designs and layouts, and there are also designs in which two or more screens are integrated. In the multi-screen design, multiple screens of the same specification model are spliced, or multiple screens of different sizes or specifications are used. Regardless of which continuous screen design scheme, in existing market models, other screens can be controlled through the center console screen, but generally only the adjustment of the display brightness can be controlled, and more parameter indicators such as the display frame rate, screen-to-body ratio, color temperature, and touch screen reporting rate of the display and touch cannot be adjusted simultaneously. And in the existing solutions, only the center console screen can control other screens such as the co-pilot screen and the instrument screen, and the brightness of other screens can be adjusted to the same brightness as that displayed on the center console screen, while the co-pilot screen or the instrument screen cannot actively control the center console screen. In addition, the method of adjusting the brightness of all screens through the center console screen generally controls the power supply of the main control board of the cockpit to control the power supply voltage of all backlight chips of the multi-connected screens to the screens, so as to realize the simultaneous control and adjustment of the brightness of all screens of the multi-connected screens. Based on this, the present invention configures multi-screen display and touch parameters through one-key reset and HID key values, solves the problems of cumbersome manual setting and inconsistent parameters of different specification screens, and significantly improves the interactive experience of the intelligent cockpit.

[0040] According to an embodiment of the present invention, there is provided an embodiment of a multi-screen control system for an intelligent cockpit. Figure 1 It is a schematic structural diagram of a multi-screen control system for an intelligent cockpit according to an embodiment of the present invention, as Figure 1 shown. The system includes:

[0041] A cockpit main control board (i.e., Figure 1 the intelligent cockpit main control board in Figure 1 ), which is built with a USB HUB chip. The USB HUB chip is used to send corresponding HID key values to the backplanes of multiple screens (such as Figure 1 screen 1 and screen 2 in

[0042] ), according to the mapping relationship between the preset HID key values and different screen IDs and the backplanes of the screens (such as Figure 1 backplane 1 and backplane 2 in Figure 1 ); Figure 1 multiple backplanes, each of which is provided with an MCU control chip (such as

[0043] MCU1 and MCU2 in Figure 1 Figure 1 ). The MCU control chip is used to receive the HID key values allocated by the USB HUB chip, and according to the mapping relationship between the preset HID key values and the screen IDs, send the HID key values to the TCON chips (such as Figure 1 TCON1 and TCON2 in Figure 1 ) and touch screen chips (such as

[0043] ) of the corresponding screens; Figure 1connected to the LVDS display screen and the eDP display screen therein, and is configured to call a preset EDID parameter group according to the received HID key value, adjust the display attributes of the display screen, and output a PWM signal to control the backlight brightness;

[0044] A touch screen chip, connected to a touch screen (such as Figure 1 the touch screen 1 and the touch screen 2 therein), and is configured to call a preset touch parameter group according to the received HID key value, and adjust the touch attributes of the touch screen.

[0045] Furthermore, in the design and selection of in-vehicle intelligent cockpit automotive-grade screens, the most widely used type is the screen with an LVDS interface, another type is the screen with an eDP interface, and there are also a few with an MIPI interface. Taking the screens with two interfaces as an example in the present invention, one is a screen with an LVDS interface and the other is a screen with an eDP interface. By adding a USB HUB chip on the cockpit main control board, it transmits the preset corresponding HID key values to the corresponding screen backplanes according to different screen IDs. Each screen backplane is designed with an MCU control chip. One of the purposes is to receive the HID key values and transmit the HID key values to the TCON chip and the touch screen chip, and the second purpose is to receive and transmit the control signals of the I2C interface of the touch screen. For example, in Figure 1 it, the HID key value 1 is given to the MCU1 of the screen backplane 1, and the HID key value 2 is given to the MCU2 of the screen backplane 2. After receiving the HID key value 1, MCU1 will respectively associate the EDID of TCON1 in screen 1 and the firmware of the touch screen chip 1 through the HID key value 1, so as to control the display screen 1 and the touch screen 1. After receiving the HID key value 2, MCU2 will respectively associate the EDID of TCON2 in screen 2 and the firmware of the touch screen chip 2 through the HID key value 2, so as to control the display screen 2 and the touch screen 2.

[0046] Among them, the cockpit main control board is the control center of the system and is built-in with a USB HUB chip. The function of the USB HUB chip is to send the corresponding HID key values to each screen backplane according to the preset mapping relationship (that is, the corresponding relationship between the HID key value and different screen IDs and screen backplanes). For example, if there are two screens (screen 1 and screen 2) in the system, the USB HUB chip will send specific HID key values to their screen backplanes 1 and 2 respectively according to the preset mapping relationship.

[0047] Each screen has a corresponding screen backplane, which contains an MCU control chip. The MCU control chip is responsible for receiving the HID key values from the USB HUB chip. Then, according to the internally preset mapping relationship (the correspondence between HID key values and screen IDs), this HID key value is sent to the corresponding TCON chip and touch screen chip respectively. For example, after MCU1 in screen backplane 1 receives the HID key value 1, it will send this key value to TCON1 and touch screen chip 1 of screen 1.

[0048] The TCON chip is connected to the display screen and is mainly responsible for controlling the display attributes of the display screen. When the TCON chip receives the HID key value, the TCON chip calls the preset EDID parameter group. Through these parameters, the TCON chip can adjust the display effect of the display screen. In addition, the TCON chip also outputs a PWM signal to control the backlight brightness. The PWM signal adjusts the brightness of the backlight panel by changing the duty cycle, thereby achieving fine control of the display brightness.

[0049] The touch screen chip is connected to the touch screen and is mainly responsible for controlling the touch attributes of the touch screen. When the touch screen chip receives the HID key value, the touch screen chip will call the preset touch parameter group. Through these parameters, the touch screen chip can adjust the touch effect of the touch screen to ensure the accuracy and smoothness of touch operations.

[0050] In an alternative embodiment, the mapping relationship between the HID key value and different screen IDs and the screen backplanes is preset in the USB HUB chip by firmware, and the HID key value is transmitted to the MCU control chips of each screen backplane through the USB protocol.

[0051] Furthermore, the mapping relationship between the HID key value and different screen IDs and the screen backplanes is preset in the USB HUB chip by firmware, and the HID key value is transmitted to the MCU control chips of each screen backplane through the USB protocol. This method ensures that the system can accurately send control instructions to the corresponding screen, realizing precise control of multiple screens. By presetting the mapping relationship in firmware, the system can quickly establish the correspondence between the HID key value and the screen during startup or reset, without manual configuration by the user, improving the automation level and user experience of the system. At the same time, using the USB protocol for transmission ensures the stability and compatibility of data transmission, enabling the system to communicate effectively with different types of screen backplanes and MCU control chips.

[0052] In an alternative embodiment, the MCU control chip is further used for:

[0053] Receiving the original touch data and touch operation signals of the touch screen chip, forwarding the original touch data to the cockpit main control board through the I2C interface, and dynamically adjusting the touch parameter group according to the touch operation signals.

[0054] Furthermore, the MCU control chip can receive the original touch data (such as touch position, pressure, etc.) and touch operation signals (such as click, slide, etc.) from the touch screen chip, and send these original touch data to the cockpit main control board through the I2C interface (low-speed serial communication interface) for further processing and response by the main control board. The MCU control chip also adjusts the touch parameter group in real time according to the touch operation signal. For example, if a rapid sliding operation by the user is detected, it may be necessary to adjust the touch reporting rate to improve the response speed; or adjust the touch sensitivity according to the touch pressure, etc. This dynamic adjustment helps to optimize the touch experience and make the touch operation more smooth and accurate.

[0055] In an alternative embodiment, the EDID parameter group includes brightness level, frame rate, color temperature, and screen-to-body ratio, and each group of the EDID parameter group is associated with at least one of the HID key values.

[0056] Furthermore, the EDID (Extended Display Identification Data) parameter group contains multiple parameters for adjusting the display attributes of the display screen. These include brightness level (controlling the brightness and darkness of the screen), frame rate (the number of frames displayed per second, affecting the smoothness of the display), color temperature (affecting the warm and cool tones of the screen color), and screen-to-body ratio (the ratio of the screen in the display area). Each EDID parameter group is associated with at least one HID (Human Interface Device) key value. The HID key value can be regarded as an instruction or identifier. When the system receives a specific HID key value, it will call the corresponding EDID parameter group to set the attributes of the display screen. For example, when the user presses a preset shortcut key (corresponding to a specific HID key value), the system may switch to an EDID parameter group suitable for watching videos, increasing the brightness, adjusting the frame rate, etc.

[0057] In an alternative embodiment, the touch parameter group includes touch reporting rate, touch delay threshold, and capacitance sensing sensitivity, and each group of the touch parameters is associated with at least one of the HID key values.

[0058] Further, the touch control parameter group includes a series of parameters for adjusting the touch performance of the touch screen. Among them, the touch reporting rate refers to the number of times the touch screen reports the touch position information to the system per second. A higher touch reporting rate can improve the response speed and accuracy of touch control; the touch delay threshold refers to the maximum allowable time from when the system detects a touch operation to when it makes a response, which is used to ensure the timeliness of touch operations; the capacitance sensing sensitivity determines the sensitivity of the touch screen to touch actions, including the perception of touch force, touch area, etc. Similar to the EDID parameter group, each touch control parameter group is also associated with at least one HID key value. When the system receives a specific HID key value, it will call the corresponding touch control parameter group to adjust the touch attributes of the touch screen. For example, in an application scenario that requires high-precision drawing, the touch control parameter group with a high touch reporting rate and high sensitivity can be switched through a specific HID key value to meet the user's demand for fine touch control.

[0059] In an optional implementation, the cockpit main control board is turned on by a one-key reset. The USB HUB chip sends a reset key value to the MCU control chip on the screen backplane through a user-triggered instruction to synchronously reset all the parameters of the display screen and the touch screen to the preset default values.

[0060] Further, the cockpit main control board has the function of one-key reset. Users can start this reset process through a simple operation (such as pressing a certain button or triggering a certain instruction). When the user triggers the reset instruction, the USB HUB chip will send a specific reset key value to the MCU control chip on each screen backplane. After receiving the reset key value, the MCU control chip will synchronously reset all the parameters of the corresponding display screen and touch screen to restore them to the preset default values. This can ensure that the display and touch effects of all screens are consistent and avoid display or touch problems caused by inconsistent parameters.

[0061] In an optional implementation, a backlight chip (such as Figure 1 the backlight chip 1 and backlight chip 2 in Figure 1 is set in the screen backplane, and a backlight board (such as

[0062] the backlight 1 and backlight 2 in

[0063] Furthermore, in this embodiment, a backlight chip is provided in each screen backplane, and a corresponding backlight panel is provided in the screen. The backlight chips and the backlight panels are in one-to-one correspondence, that is, each backlight chip controls one backlight panel. The main function of the backlight chip is to control the backlight brightness of the backlight panel. It adjusts the backlight brightness by receiving the PWM signal output by the TCON chip. The backlight chip receives the PWM (pulse width modulation) signal from the TCON chip and adjusts the backlight brightness of the backlight panel according to the duty cycle of the received PWM signal. The larger the duty cycle, the higher the backlight brightness; the smaller the duty cycle, the lower the backlight brightness. The PWM signal is a signal that controls the output power by changing the duty cycle of the pulse, and its generation and transmission are independent of the power supply configuration of the cockpit main control board. That is to say, the adjustment of the backlight brightness is not affected by the power fluctuations of the cockpit main control board, thus ensuring the stability and accuracy of the backlight brightness.

[0064] The TCON chip generates the PWM signal according to the settings in the EDID parameter group. The EDID parameter group contains parameters regarding the display attributes of the display screen, such as brightness levels, etc. The TCON chip determines the duty cycle of the PWM signal based on these parameters, thereby achieving precise control of the backlight brightness.

[0065] In an alternative embodiment, the interface type of the screen includes one or more of the LVDS interface, eDP interface, and MIPI interface, and the TCON chip configures the corresponding deserializer or direct connection signal path according to the interface type.

[0066] Furthermore, the interface type of the screen in this embodiment can be one or more of LVDS (low-voltage differential signal), eDP (embedded display port), or MIPI (mobile industry processor interface). Different interface types are applicable to different screen technologies and application scenarios. The TCON (timing controller) chip configures the corresponding deserializer or direct connection signal path according to the interface type of the screen. For a screen with an LVDS interface, the TCON chip will configure a deserializer to convert the serial LVDS signal into a parallel signal so that the display screen can correctly receive and process these signals. For screens with eDP and MIPI interfaces, the TCON chip configures a direct connection signal path to directly transmit the signal to the display screen (because these interface types can usually already transmit signals in a format suitable for the display screen to process).

[0067] In an alternative embodiment, multiple groups of HID key value combinations are also preset in the USB HUB chip, and each group of HID key value combinations corresponds to the parameter configuration of an application scenario, and the application scenarios include entertainment mode, driving mode, and eye protection mode.

[0068] Furthermore, multiple groups of HID key value combinations are pre-set in the USB HUB chip. Each group of HID key value combinations corresponds to a specific application scenario, and these scenarios have different parameter configuration requirements.

[0069] Entertainment mode: In this mode, the parameter configuration focuses on providing the best visual and touch experience, such as high brightness, high frame rate, high touch reporting rate, etc., to meet the requirements of users for display effects and response speeds during entertainment activities such as watching videos and playing games.

[0070] Driving mode: The parameter configuration in this mode takes into account the particularity of the driving environment, such as moderate brightness to avoid being too bright in strong light or too dark in weak light, a stable frame rate to ensure the smoothness of the displayed content, and appropriate touch parameters to ensure that the driver can operate the touch screen accurately and quickly.

[0071] Eye protection mode: This mode mainly focuses on the visual health of users. The parameter configuration may include reducing the screen brightness, adjusting the color temperature to reduce blue light radiation, controlling the frame rate to relieve eye fatigue, etc., so as to reduce the damage to the eyes during long-term use of the intelligent cockpit system.

[0072] Through this pre-set HID key value combination, users can quickly switch different application scenarios according to the current usage needs, without manually adjusting each parameter, improving the usability and user experience of the system.

[0073] Furthermore, as Figure 1 shown, the cockpit main control board supplies power to LDO1 and LDO2 on the screen backplane through the Power line (LDO is a low dropout linear regulator, which is used to convert the input voltage into a stable output voltage to provide stable power for the backend circuits, such as the backlight chip, MCU control chip, etc.). After being regulated by the LDO, it supplies power to components such as backlight 1 and backlight 2. This process can avoid voltage fluctuations from affecting the backlight brightness of the display screen and the operation stability of the chip, ensuring the stable operation of the intelligent cockpit multi-screen control system.

[0074] Furthermore, the cockpit main control board transmits the video signal to the screen backplane through the eDP / DP interface. After being processed by components such as the deserializer, it is finally transmitted to the display screen (such as an LVDS display screen, an eDP display screen) to achieve the high-definition display function.

[0075] In summary, compared with the intelligent cockpit technology solutions on the market, in each screen backplane of multiple screens in this embodiment, an additional MCU control chip is added, and an additional USB HUB chip is added to the intelligent cockpit main control board. It is mainly used to send key values to the MCU control chips of the screen backplanes corresponding to each screen according to the HID key values corresponding to different screen IDs through the USB HUB chip. The corresponding relationship between the HID key values and different screens will be pre-set in the firmware and burned into the corresponding MCU control chips. The MCU control chips will process the corresponding display screens and touch screens respectively. One is to send the corresponding HID key values to the TCON chips of the display screens and the touch screen chips of the touch screens of the corresponding screens. The corresponding relationship between the EDID screen parameter groups and the HID key values will be pre-set in the TCON chips, and the corresponding relationship between the touch control parameter groups and the HID key values will be pre-set in the firmware of the touch screen chips. Multiple groups of corresponding relationships between the HID key values and the parameters can be pre-set respectively. The display screen sets the parameters of the display screen with a group of EDID screen parameter groups corresponding to the key values of the TCON chip, and the touch screen sets the touch screen with a group of touch control parameter groups corresponding to the HID key values of the touch screen chip. Another function of the MCU control chip is to read and write the I2C interface signals of the touch screen. When performing a touch operation on the touch screen, the channel and the original touch data will be transmitted to the MCU control chip through the touch screen chip, and the MCU control chip will transmit it to the cockpit main control board, so as to receive the coordinate data and operation signals of the touch screen, etc. For the display screen signals, it is basically the same as the existing intelligent cockpit solutions. For the eDP display screen, the eDP control and data signals are output by the cockpit main control and directly connected to the TCON of the display screen through the screen backplane, so as to control the display of the display screen. For the LVDS display screen, after the display signal is serialized by the intelligent cockpit main control, an eDP or DP signal is output to the deserializer on the screen backplane, and after being deserialized into an LVDS signal by the deserializer, it is output to the display screen TCON, and then the display of the display screen is controlled.

[0076] Figure 2 It is a data flow schematic diagram of the multi-screen control system of the intelligent cockpit in this embodiment (taking three different interface type screens as examples). From the perspective of data flow, the USB HUB chip in the intelligent cockpit main control board has the corresponding relationship between different HID key values, different screen IDs, and the MCU control chips in their screen backplanes; each MCU control chip has the corresponding relationship between different HID key values and screen IDs; each TCON chip has the corresponding relationship between different HID key values and EDID parameter groups; the firmware of each touch screen chip has the corresponding relationship between different HID key values and touch control parameter groups (i.e., Figure 2 the TP FW parameters in). Figure 2 It shows the data flow of three different interfaces, including LVDS display screens, eDP display screens, and MIPI display screens. In actual applications, it is also applicable to the data flow control of more interface types and more screens.

[0077] In summary, the cockpit main control board of this embodiment is built-in with a USB HUB chip, and multiple groups of HID key value combinations are preset in the USB HUB chip, corresponding to the parameter configurations of different application scenarios. Users can flexibly select and switch modes according to actual needs. By adding an MCU chip to the screen backplane, the control functions of the display screen and the touch screen are integrated, reducing the system complexity and improving the system integration and reliability. Moreover, this MCU control chip can receive and transmit the I2C control signal of the touch screen, realizing efficient control and data processing of the touch screen, and ensuring the smoothness and accuracy of touch operations. The TCON chip and the touch screen chip call the preset EDID parameter group and touch parameter group according to the HID key value, realizing fine adjustment of the parameters of the display screen and the touch screen, and improving the display and touch performance.

[0078] Secondly, in this embodiment, by coordinating the control of the EDID parameter group and the touch parameter group of multiple screens, when used as an overall screen, the display and touch effects of each block are kept consistent, improving the user experience. There is no need to configure the main and secondary power supplies of the cockpit main control board. The backlight brightness is directly adjusted by the PWM signal output by the TCON chip, and the PWM signal control can realize multiple brightness level adjustments, with a better subjective experience.

[0079] In addition, in this embodiment, through the one-key reset function, users can quickly set the display and touch parameters of all screens to the optimal matching, without manually entering the multi-level sub-menus for cumbersome settings, significantly improving the operation efficiency. It can not only adapt to screens of different sizes or specifications, but also realize the control of the display screen parameters of different interface types, making the system have stronger versatility and scalability.

[0080] In this embodiment, an intelligent cockpit multi-screen control method is provided, and this method is applied to Figure 1 an intelligent cockpit multi-screen control system shown in Figure 3 is a flowchart of an intelligent cockpit multi-screen control method according to an embodiment of the present invention. As shown in Figure 3 the following steps are included in this process:

[0081] Step S301, according to the mapping relationship between the preset HID key value and different screen IDs and the screen backplane of the cockpit main control board, send the corresponding HID key value to the screen backplanes of multiple screens.

[0082] Step S302, enable the MCU control chip in the screen backplane to send the HID key value to the TCON chip and the touch screen chip of the corresponding screen respectively according to the mapping relationship between the preset HID key value and the screen ID.

[0083] Step S303: Cause the TCON chip to call a preset EDID parameter group according to the received HID key value, adjust the display attributes of the display screen, and output a PWM signal to control the backlight brightness.

[0084] Step S304: Cause the touch screen chip to call a preset touch control parameter group according to the received HID key value, and adjust the touch control attributes of the touch screen.

[0085] Further, Figure 4 FIG. [FIG. number not provided in the original] is a flowchart of another multi-screen control method for an intelligent cockpit shown in this embodiment. Taking two display screens (LVDS display screen and eDP display screen) as an example (more screens can also refer to this process), after the power of the intelligent cockpit main control board is turned on, each screen of the cockpit multi-screen is initialized and then the normal display and touch control functions are turned on. In different application scenarios, different screens respectively set the display and touch control parameters according to requirements, such as display parameters such as brightness, aspect ratio, frame rate, etc., and touch control parameters such as touch reporting rate. After the setting is completed, the normal cockpit starts to run. At this time, the intelligent cockpit main control board is reset and turned on with one key. The USB HUB chip on the cockpit main control board transmits the key values of different HID protocols to the MCU control chips of each screen backplane according to the corresponding relationship between the firmware built-in key values, screen IDs, and the screen backplane MCU. After each MCU control chip receives the corresponding key value, it will transmit the HID key value to the TCON chip and touch screen chip of the corresponding screen according to the corresponding relationship between the HID key value and the screen ID in the MCU firmware. According to the corresponding relationship between the built-in HID key value and the EDID parameter group of each TCON chip, and the corresponding relationship between the key value built in the firmware of each touch screen chip and the touch control parameter group, the TCON chip will set the display screen according to the corresponding EDID parameter group, and the touch screen chip will set the touch screen according to the corresponding touch control parameter group of the firmware. After the display and touch control parameters of each screen of the multi-screen are set, the entire screen parameter setting is completed.

[0086] In Figure 4 the intelligent cockpit system is powered on and starts the initialization process. According to the actual usage requirements, display and touch control parameters are set for each screen respectively, such as brightness, aspect ratio, frame rate, reporting rate, etc. The user triggers the one-key reset function (by pressing a certain button or triggering a certain instruction), and the USB HUB chip on the cockpit main control board sends the corresponding HID key value to the screen backplane of each screen through the HID protocol according to the preset mapping relationship between the HID key value and the screen ID.

[0087] The MCU1 in the screen backplane 1 receives the HID key value 1, and the MCU1 sends the HID key value 1 to the TCON1. At the same time, the MCU1 sends the HID key value 1 to the touch screen chip 1. The TCON1 calls the preset EDID parameter group according to the HID key value 1 to set the display attributes such as the brightness, aspect ratio, and frame rate of the display screen 1. The touch screen chip 1 calls the preset touch control parameter group according to the HID key value 1 to set the touch control attributes such as the reporting rate and touch control delay of the touch screen 1. For a display screen using an LVDS interface, specific display settings are performed according to the EDID parameters corresponding to the HID key value 1. The touch screen 1 performs specific touch control settings according to the touch control parameters corresponding to the HID key value 1 to complete all parameter settings for the screen 1.

[0088] The MCU2 in the screen backplane 2 receives the HID key value 2, and the MCU2 sends the HID key value 2 to the TCON2. At the same time, the MCU2 sends the HID key value 2 to the touch screen chip 2. The TCON2 calls the preset EDID parameter group according to the HID key value 2 to set the display attributes such as the brightness, aspect ratio, and frame rate of the display screen 2. The touch screen chip 2 calls the preset touch control parameter group according to the HID key value 2 to set the touch control attributes such as the reporting rate and touch control delay of the touch screen 2. For a display screen using an eDP interface, specific display settings are performed according to the EDID parameters corresponding to the HID key value 2. The touch screen 2 performs specific touch control settings according to the touch control parameters corresponding to the HID key value 2 to complete all parameter settings for the screen 2.

[0089] After the parameter settings or resets of all screens are completed, one-key screen parameter setting is completed, and the system enters a stable working state, providing users with a consistent and optimized display and touch control experience.

[0090] In summary, the cockpit main control board of this embodiment is built-in with a USB HUB chip, and multiple groups of HID key value combinations are preset in the USB HUB chip, corresponding to parameter configurations for different application scenarios. Users can flexibly select and switch modes according to actual needs. By adding an MCU chip to the screen backplane, the control functions of the display screen and the touch screen are integrated, reducing the system complexity, improving the system integration and reliability. Moreover, this MCU control chip can receive and transmit the I2C control signal of the touch screen, realizing efficient control and data processing of the touch screen, ensuring the smoothness and accuracy of touch operations. The TCON chip and the touch screen chip call the preset EDID parameter group and touch control parameter group according to the HID key value to achieve fine adjustment of the parameters of the display screen and the touch screen, improving the display and touch control performance.

[0091] Secondly, in this embodiment, by coordinately controlling the EDID parameter groups and touch control parameter groups of multiple screens, when used as an overall screen, the display and touch control effects of each block are kept consistent, improving the user experience. There is no need to configure the power supply of the cockpit main control board as primary and secondary. The backlight brightness is directly adjusted through the PWM signal output by the TCON chip, and the PWM signal control can achieve multiple brightness level adjustments, resulting in a better subjective experience.

[0092] In addition, in this embodiment, through the one-key reset function, users can quickly set the display and touch control parameters of all screens to the optimal matching, without manually entering the multi-level sub-menus for cumbersome settings, significantly improving the operation efficiency. It can not only adapt to screens of different sizes or specifications, but also control the parameter settings of display screens of different interface types, making the system have stronger versatility and scalability.

[0093] The embodiment of the present invention also provides a computer device. Please refer to Figure 5 , Figure 5 which is a schematic structural diagram of a computer device provided by an optional embodiment of the present invention. As shown in Figure 5 , the computer device includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including a high-speed interface and a low-speed interface. Each component communicates with each other using different buses and can be installed on a common main board or installed in other ways as needed. The processor can process instructions executed within the computer device, including instructions stored in the memory or on the memory to display graphical information of the GUI on an external input / output device (such as a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (such as a server array, a set of blade servers, or a multi-processor system). Figure 5 In

[0094] , a single processor 10 is taken as an example.

[0095] The memory 20 stores instructions executable by at least one processor 10, so that at least one processor 10 executes the method shown in the above embodiment.

[0096] The memory 20 may include a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function; the data storage area can store data created according to the use of the computer device and the like. In addition, the memory 20 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some alternative embodiments, the memory 20 may optionally include a memory remotely disposed relative to the processor 10, and these remote memories can be connected to the computer device through a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0097] The memory 20 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, a hard disk, or a solid-state drive; the memory 20 may further include a combination of the above types of memory.

[0098] The computer device further includes a communication interface 30 for the computer device to communicate with other devices or a communication network.

[0099] Embodiments of the present invention also provide a computer-readable storage medium. The method according to the embodiments of the present invention can be implemented in hardware, firmware, or be implemented as computer code that can be recorded on a storage medium, or be implemented as computer code originally stored in a remote storage medium or a non-transitory machine-readable storage medium and to be downloaded through a network and stored in a local storage medium, so that the method described herein can be stored in such software processed on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk, or a solid-state drive, etc.; further, the storage medium may also include a combination of the above types of memory. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code, and when the software or computer code is accessed and executed by the computer, the processor, or the hardware, the method shown in the above embodiments is implemented.

[0100] A part of the present invention can be applied as a computer program product, such as computer program instructions, which, when executed by a computer, can call or provide the methods and / or technical solutions according to the present invention through the operations of the computer. Those skilled in the art should understand that the forms of existence of computer program instructions in a computer-readable medium include, but are not limited to, source files, executable files, installation package files, etc. Correspondingly, the ways in which computer program instructions are executed by a computer include, but are not limited to: the computer directly executes the instructions, or the computer compiles the instructions and then executes the corresponding compiled program, or the computer reads and executes the instructions, or the computer reads and installs the instructions and then executes the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible by the computer.

[0101] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the defined scope.

Claims

1. An intelligent cockpit multi-screen control system, characterized in that, The system includes: A cockpit main control board with a built-in USB HUB chip, which is used to send corresponding HID key values to the backplanes of multiple screens according to the mapping relationship between preset HID key values and different screen IDs and the backplanes of the screens; Multiple screen backplanes, each of which is provided with an MCU control chip, which is used to receive the HID key values allocated by the USB HUB chip and send the HID key values to the TCON chips and touch screen chips of the corresponding screens according to the preset mapping relationship between the HID key values and the screen IDs; A TCON chip, connected to the display screen, which is used to call a preset EDID parameter group according to the received HID key value, adjust the display attributes of the display screen, and output a PWM signal to control the backlight brightness; A touch screen chip, connected to the touch screen, which is used to call a preset touch parameter group according to the received HID key value and adjust the touch attributes of the touch screen.

2. The system according to claim 1, wherein The mapping relationship between the HID key values and different screen IDs and the backplanes of the screens is preset in the USB HUB chip through firmware, and the HID key values are transmitted to the MCU control chips of each backplane through the USB protocol.

3. The system according to claim 1, wherein The MCU control chip is further used for: Receiving the original touch data and touch operation signals of the touch screen chip, forwarding the original touch data to the cockpit main control board through the I2C interface, and dynamically adjusting the touch parameter group according to the touch operation signals.

4. The system according to claim 1, wherein The EDID parameter group includes brightness level, frame rate, color temperature and screen ratio, and each group of EDID parameter groups is associated with at least one of the HID key values.

5. The system according to claim 1, wherein The touch parameter group includes touch reporting rate, touch delay threshold and capacitance sensing sensitivity, and each group of touch parameters is associated with at least one of the HID key values.

6. The system according to claim 1, wherein The cockpit main control board is turned on through a one-key reset. By triggering a user instruction, the USB HUB chip sends a reset key value to the MCU control chip of the backplane to synchronously reset the parameters of all the display screens and the touch screens to the preset default values.

7. The system according to claim 1, characterized in that, A backlight chip is provided in the backplane, and a backlight board is provided in the screen, and the backlight chips and the backlight boards correspond one by one; The backlight chip is used to receive the PWM signal output by the TCON chip and control the backlight brightness of the backlight board through the PWM signal; the PWM signal adjusts the backlight brightness level through the duty cycle, and the PWM signal is independent of the power supply configuration of the cockpit main control board and is a control signal generated by the TCON chip according to the EDID parameter group.

8. The system according to claim 1, wherein The interface type of the screen includes one or more of LVDS interface, eDP interface and MIPI interface, and the TCON chip configures a corresponding deserializer or direct connection signal path according to the interface type.

9. The system according to claim 1, wherein Multiple groups of HID key value combinations are also preset in the USB HUB chip, and each group of HID key value combinations corresponds to the parameter configuration of an application scenario, and the application scenarios include entertainment mode, driving mode and eye protection mode.

10. A multi-screen control method for an intelligent cockpit, characterized in that, The method is applied to an intelligent cockpit multi-screen control system according to any one of claims 1-9, and the method includes: According to the mapping relationship between the preset HID key values and different screen IDs and the screen backplanes of the screens, the USB HUB chip of the cockpit main control board sends the corresponding HID key values to the screen backplanes of multiple screens; The MCU control chip in the screen backplane sends the HID key values to the TCON chip and the touch screen chip of the corresponding screen respectively according to the mapping relationship between the preset HID key values and the screen IDs; The TCON chip calls the preset EDID parameter group according to the received HID key value, adjusts the display attributes of the display screen, and outputs a PWM signal to control the backlight brightness; The touch screen chip calls the preset touch control parameter group according to the received HID key value to adjust the touch control attributes of the touch screen.

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