A vehicle-mounted dual-screen CMS system and vehicle

Abstract

The application provides a vehicle-mounted double-screen CMS system and a vehicle. Through AD value selection function transmitted by touch or button of a left main driver display screen of the CMS, a central processing unit sends instructions to a serializer and a camera through a deserializer, the camera obtains a picture, and after processing, the camera converts the picture into YUV422 video signals through the serializer, and transmits the YUV422 video signals to a deserializer chip of the CMS system through a GMSL protocol or an FPD-Link protocol, and finally converts the YUV422 video signals into LVDS signals or EDP signals to display on a display screen. When information transmitted by a left main driver CAN chip is to control the field of view or the backlight brightness of a right co-driver screen, the central processing unit converts the serial port information into CAN messages, and forwards the CAN messages to a right co-driver CAN chip, the right co-driver CAN chip converts the CAN messages into serial port information and sends the serial port information back to the central processing unit, the central processing unit transmits the serial port information to the deserializer chip of the CMS system through the GMSL protocol or the FPD-Link protocol, and finally converts the serial port information into LVDS signals or EDP signals to display on the display screen.

Description

Technical Field

[0001] This application belongs to the field of automotive electronics, specifically relating to an in-vehicle dual-screen CMS system and a vehicle. Background Technology

[0002] In existing technology, the left and right side displays show the field of view, and the backlight brightness is controlled by the car's central control display. The central control host obtains the user's reported information and sends a CAN message to the CMS system to achieve the adjustment. When the field of view and brightness need to be adjusted while the vehicle is in motion, the driver is distracted and needs to access the settings interface of the central control display to make the adjustment, which poses a safety hazard. At the same time, the system has low operating efficiency in emergency situations and may adversely affect driving safety. Utility Model Content

[0003] To address the shortcomings of the existing technology, this application provides an in-vehicle dual-screen CMS system and vehicle. By identifying the functions and operations selected by the customer through reporting information, the system controls the display fields of the left and right driver and passenger displays to notify the camera or backlight module to perform corresponding operations, or obtains the AD value transmitted from the buttons and identifies the functions selected by the customer through the AD value. This solves the problem that when the driver needs to adjust the display field and backlight brightness of the CMS, they need to enter the central control interface to make settings, and may need to exit the function currently being used on the display, which is inconvenient. At the same time, it also improves the safety during driving.

[0004] Firstly, this application proposes an in-vehicle dual-screen CMS system, comprising a main display screen and a secondary display screen, wherein the display function of the secondary display screen can be controlled through the main display screen; wherein,

[0005] The main display screen includes a first display screen connected to the first central processing unit and buttons;

[0006] The secondary display screen includes a second camera module, a second backlight module, and a second display screen connected to the second central processing unit;

[0007] The first central processing unit and the second central processing unit are connected via a CAN chip for communication.

[0008] The second central processing unit sends corresponding control parameters to the second camera module and the second backlight module according to the CAN message information sent by the first central processing unit. The second camera module and the second backlight module adjust the display of the second display screen according to the control parameters.

[0009] This application proposes an in-vehicle dual-screen CMS system. The system distributes the processing tasks of the main display screen and the secondary display screen to two independent central processing units, achieving a reasonable division of labor. Communication is achieved through a CAN chip, ensuring efficient and stable data transmission between the two central processing units. The control of the secondary display screen is performed by the second central processing unit based on CAN message information sent by the first central processing unit, including adjustments to the camera module and backlight module. The secondary display screen is not merely a simple display; it also integrates a camera module and a backlight module, supporting more display modes and functions. It possesses an efficient control mechanism, superior display effect, stable communication architecture, precise function control, and good scalability, providing a more intelligent and efficient in-vehicle user experience.

[0010] Preferably, an in-vehicle dual-screen CNS system includes a second camera module.

[0011] The second camera module also includes a second sensor, a second ISP chip, and a second serializer;

[0012] The second ISP chip processes the video signal acquired by the second sensor according to the control parameters sent by the second central processing unit, and then transmits it to the second deserializer via the second serializer using the GMSL protocol or the FPD-Link protocol.

[0013] Preferably, an in-vehicle dual-screen CNS system includes:

[0014] The second deserializer acquires the video signal information transmitted from the second serializer chip and converts it into an LVDS signal or an EDP signal for display on the second display screen.

[0015] Preferably, an in-vehicle dual-screen CNS system includes:

[0016] The second central processing unit and the second backlight module transmit PWM signals.

[0017] The second central processing unit and the second display screen transmit signals via IIC.

[0018] The second camera module integrates a second sensor, a second ISP chip, and a second serializer, enabling efficient acquisition and processing of video signals. The second ISP chip is responsible for processing the video signals acquired by the sensor according to control parameters and transmitting the video signals using the GMSL or FPD-Link protocol. These protocols are specifically designed for automotive electronic systems, possessing high anti-interference capabilities and transmission speeds, ensuring stable signal transmission in high-speed and complex in-vehicle environments.

[0019] The second central processing unit and the second backlight module transmit signals via PWM. This method can precisely control the backlight brightness and achieve automatic brightness adjustment. The display brightness is adjusted according to changes in light inside and outside the vehicle. Precise backlight adjustment can also extend the lifespan of the display screen and avoid overheating problems caused by prolonged use at high brightness.

[0020] The second central processing unit and the second display screen transmit signals via the IIC bus. It features low power consumption, a simple structure, and easy integration with multiple devices, making it suitable for connecting multiple display components in a vehicle system and reducing wiring complexity and system failure risks.

[0021] Preferably, an in-vehicle dual-screen CNS system includes: a main display screen,

[0022] The main display screen also includes a first camera module and a first backlight module;

[0023] The first camera module and the first central processing unit transmit signals via IIC;

[0024] The first central processing unit can receive user commands via a first display screen or buttons.

[0025] Preferably, an in-vehicle dual-screen CNS system includes: a first camera module,

[0026] The first camera module also includes a first sensor, a first ISP chip, and a first serializer;

[0027] The first ISP chip processes the video signal acquired by the first sensor according to the control parameters sent by the first central processing unit, and then transmits it to the first deserializer via the first serializer using the GMSL protocol or the FPD-Link protocol.

[0028] Preferably, an in-vehicle dual-screen CNS system includes:

[0029] The first deserializer acquires the video signal information transmitted from the first serializer chip and converts it into an LVDS signal or an EDP signal for display on the first display screen.

[0030] Preferably, an in-vehicle dual-screen CNS system includes:

[0031] The first central processing unit and the first display screen transmit signals via IIC.

[0032] The first camera module, equipped with a first sensor, a first ISP chip, and a first serializer, can efficiently acquire and process video signals from the in-vehicle environment. The first ISP chip receives control parameters from the first central processing unit and performs real-time optimization of the video signal, including noise reduction and contrast enhancement, to improve video quality and ensure the clarity and stability of video images both inside and outside the vehicle. The first deserializer converts the video signal from the first serializer into LVDS or EDP signals, providing high-quality video output to the display screen.

[0033] The first central processing unit and the first display screen communicate via IIC signals, simplifying wiring and reducing system complexity. Simultaneously, the first central processing unit receives user commands through the display screen or buttons, providing flexible user interaction methods and allowing adjustment of display screen settings or control of other functions of the vehicle system according to actual needs.

[0034] This system employs a low-power communication protocol, and video transmission uses GMSL or FPD-Link protocols, which can reduce energy consumption and extend vehicle battery life. The system proposed in this application features efficient video acquisition and processing, flexible display signal conversion, precise display control, intelligent interaction, high reliability, low power consumption, and system compatibility and scalability. It also improves the performance of the in-vehicle infotainment system, providing a clearer, more stable, and intelligent user experience, while reducing energy consumption and enhancing the overall reliability and maintainability of the system.

[0035] Secondly, a vehicle comprising an in-vehicle dual-screen CMS system as described in any of the first aspects.

[0036] The connection method between the central processing unit of the CMS system proposed in this application and modules such as the touch screen, CAN chip, and deserializer enables the collaborative work of various components in the system. The left and right display screen systems in the system are interconnected through the CAN chip. The camera module includes a sensor, a serializer, and a CMS camera. The use of the serializer optimizes the signal transmission efficiency.

[0037] Compared with the prior art, the advantages of this application are as follows:

[0038] This application provides an in-vehicle dual-screen CMS system and vehicle. By utilizing a touchscreen display and buttons for adjustment, the driver can directly adjust functions such as the CMS system's visibility or backlight via the touchscreen or buttons when urgently needing to do so, without needing to select the corresponding function menu through the central control panel. This makes operation more convenient and faster. It also supports adjustments via the central control display and the main unit, providing users with multiple operation options. Controlling the right display via the left display reduces the processing of control information on the right display, saving costs. Furthermore, using a touchscreen for function adjustment enhances the CMS system's functionality. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of a vehicle-mounted dual-screen CMS system.

[0040] Figure 2 This is a flowchart of the software for left and right screen linkage.

[0041] Figure 3 This is the workflow diagram for the left screen.

[0042] Figure 4 This is the right-screen workflow diagram. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0044] Example 1, as Figure 2 As shown, this application proposes an in-vehicle dual-screen CMS system, including a main display screen and a secondary display screen, wherein the display function of the secondary display screen can be controlled through the main display screen; wherein,

[0045] The main display screen includes a first display screen connected to the first central processing unit and buttons;

[0046] The secondary display screen includes a second camera module, a second backlight module, and a second display screen connected to the second central processing unit;

[0047] The first central processing unit and the second central processing unit are connected via a CAN chip for communication.

[0048] The second central processing unit sends corresponding control parameters to the second camera module and the second backlight module according to the CAN message information sent by the first central processing unit. The second camera module and the second backlight module adjust the display of the second display screen according to the control parameters.

[0049] This application proposes a CMS system.

[0050] The driver can select the desired adjustment function by touching the left display screen of the CMS. If the display screen does not have a touch screen, it can be controlled using buttons. Functions include controlling the display field of view and backlight brightness of both the left and right screens. The driver can adjust both displays simply by touching the left display screen. Simultaneously, the video signal transmitted from the deserializer chip is displayed.

[0051] The first central processing unit acquires user-reported information from the central control display screen, identifies the selected function and operation based on this information, or acquires AD values ​​transmitted from the buttons, identifies the function selected by the user based on these AD values. If the information indicates control of the first display screen's field of view or backlight brightness, the unit notifies the first camera module or the first backlight module to execute the corresponding operation, outputting a corresponding PWM signal to the first backlight module to control its brightness. When the information indicates adjustment of the second display screen's field of view or backlight brightness, the information is forwarded to the CAN chip via a serial port protocol.

[0052] The second central processing unit receives serial port information sent from the first display screen via the CAN chip, identifies the corresponding function, and then sends precise control parameters to the second camera module and the second backlight module of the second display screen. Based on the control parameter instructions, it executes the corresponding function.

[0053] Preferred, such as Figure 3 , Figure 4 As shown, an in-vehicle dual-screen CNS system includes a second camera module.

[0054] The second camera module also includes a second sensor, a second ISP chip, and a second serializer;

[0055] The second ISP chip processes the video signal acquired by the second sensor according to the control parameters sent by the second central processing unit, and then transmits it to the second deserializer via the second serializer using the GMSL protocol or the FPD-Link protocol.

[0056] Preferably, an in-vehicle dual-screen CNS system includes:

[0057] The second deserializer acquires the video signal information transmitted from the second serializer chip and converts it into an LVDS signal or an EDP signal for display on the second display screen.

[0058] Preferably, an in-vehicle dual-screen CNS system includes:

[0059] The second central processing unit and the second backlight module transmit PWM signals.

[0060] The second central processing unit and the second display screen transmit signals via IIC.

[0061] Preferably, an in-vehicle dual-screen CNS system includes: a main display screen,

[0062] The main display screen also includes a first camera module and a first backlight module;

[0063] The first camera module and the first central processing unit transmit signals via IIC;

[0064] The first central processing unit can receive user commands via a first display screen or buttons.

[0065] Preferably, an in-vehicle dual-screen CNS system includes: a first camera module,

[0066] The first camera module also includes a first sensor, a first ISP chip, and a first serializer;

[0067] The first ISP chip processes the video signal acquired by the first sensor according to the control parameters sent by the first central processing unit, and then transmits it to the first deserializer via the first serializer using the GMSL protocol or the FPD-Link protocol.

[0068] Preferably, an in-vehicle dual-screen CNS system includes:

[0069] The first deserializer acquires the video signal information transmitted from the first serializer chip and converts it into an LVDS signal or an EDP signal for display on the first display screen.

[0070] Preferably, an in-vehicle dual-screen CNS system includes:

[0071] The first central processing unit and the first display screen transmit signals via IIC.

[0072] The camera captures the display screen's field of view, and its internal ISP chip allows for adjustments to the display's field of view, including vertical, horizontal, and other functions, as well as field-of-view cropping. The camera also contains a serializer chip that transmits the field-of-view information acquired by the camera to the deserializer chip on the CMS system side via protocols such as FPD-Link or GMSL.

[0073] The serializer receives the processed video signal from the camera, converts it into a YUV422 or similar video signal, and then transmits it to the deserializer chip in the CMS system via the GMSL or FPD-Link protocol. The deserializer receives the video signal information transmitted from the serializer chip and converts it into an LVDS or EDP signal for display on the screen.

[0074] The deserializer obtains the video signal information transmitted from the serializer chip and converts it into LVDS or EDP signals for display on the screen.

[0075] The backlight module controls the backlight brightness of the display screen by acquiring the PWM signal transmitted from the main control unit.

[0076] Example 2: A vehicle including any of the in-vehicle dual-screen CMS systems described in the first aspect.

[0077] The CMS system proposed in this application enables the collaborative work of various components in the system through the connection between the central processing unit and modules such as the touch screen, CAN chip, and deserializer. The left and right display screen systems in the system are interconnected through the CAN chip, and it is also compatible with the use of the central control display screen and host adjustment, giving users multiple operation options. The camera module includes a sensor, a serializer, and a CMS camera. The use of the serializer optimizes the signal transmission efficiency.

[0078] The sensor and ISP chip in the camera module work together with the deserializer to achieve efficient processing and real-time display of image signals. The application of the CAN chip enables efficient network communication and data exchange between the left and right displays.

[0079] Meanwhile, the CMS system proposed in this application can also adapt to various driving environments, including strong daylight, low light at night, and adverse weather conditions such as rain and snow. The CMS system, which links the left and right driver and passenger screens, improves driving safety, comfort, and convenience by optimizing image processing, enhancing driver visibility control, and improving display brightness adaptability, and has significant beneficial effects.

[0080] Although exemplary embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above exemplary embodiments are merely illustrative and are not intended to limit the scope of this application. Various changes and modifications can be made therein by those skilled in the art without departing from the scope and spirit of this application. All such changes and modifications are intended to be included within the scope of this application as claimed in the appended claims.

[0081] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0082] Although the description of this application has been given in conjunction with the specific embodiments described above, it will be apparent to those skilled in the art that many substitutions, modifications, and variations can be made based on the foregoing. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A vehicle-mounted dual-screen CMS system, comprising a main display screen and a secondary display screen, characterized in that: The main display screen can control the display function of the secondary display screen; wherein, The main display screen includes a first display screen connected to the first central processing unit and buttons; The secondary display screen includes a second camera module, a second backlight module, and a second display screen connected to the second central processing unit; The first central processing unit and the second central processing unit are connected via a CAN chip for communication. The second central processing unit sends corresponding control parameters to the second camera module and the second backlight module according to the CAN message information sent by the first central processing unit. The second camera module and the second backlight module adjust the display of the second display screen according to the control parameters.

2. The in-vehicle dual-screen CMS system according to claim 1, characterized in that: The second camera module also includes a second sensor, a second ISP chip, and a second serializer; The second ISP chip processes the video signal acquired by the second sensor according to the control parameters sent by the second central processing unit, and then transmits it to the second deserializer via the second serializer using the GMSL protocol or the FPD-Link protocol.

3. The in-vehicle dual-screen CMS system according to claim 2, characterized in that: The second deserializer acquires the video signal information transmitted from the second serializer chip and converts it into an LVDS signal or an EDP signal for display on the second display screen.

4. The in-vehicle dual-screen CMS system according to claim 3, characterized in that: The second central processing unit and the second backlight module transmit PWM signals. The second central processing unit and the second display screen transmit signals via IIC.

5. The in-vehicle dual-screen CMS system according to claim 4, characterized in that: The main display screen also includes a first camera module and a first backlight module; The first camera module and the first central processing unit transmit signals via IIC; The first central processing unit can receive user commands via a first display screen or buttons.

6. The in-vehicle dual-screen CMS system according to claim 5, characterized in that: The first camera module also includes a first sensor, a first ISP chip, and a first serializer; The first ISP chip processes the video signal acquired by the first sensor according to the control parameters sent by the first central processing unit, and then transmits it to the first deserializer via the first serializer using the GMSL protocol or the FPD-Link protocol.

7. The in-vehicle dual-screen CMS system according to claim 6, characterized in that: The first deserializer acquires the video signal information transmitted from the first serializer chip and converts it into an LVDS signal or an EDP signal for display on the first display screen.

8. The in-vehicle dual-screen CMS system according to claim 7, characterized in that: The first central processing unit and the first display screen transmit signals via IIC.

9. A vehicle, characterized in that: Including the in-vehicle dual-screen CMS system as described in any one of claims 1-8.

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