A signal adapter board and display screen for multi-size displays

Abstract

This application provides a signal adapter board for multi-size displays, comprising: a deserializer (DES) assembly section, an FPGA module, a video signal converter, and an HDMI interface; wherein, the deserializer (DES) assembly section is composed of multiple deserializers; the deserializer (DES) assembly section receives video signals from different serializers at the DHU (Device Head Unit) vehicle host and converts GMSL signals or FPD LINK signals into EDP signals and LVDS signals; the FPGA module converts the EDP signals and LVDS signals into LVDS signals, and then the video signal converter converts the LVDS signals into HDMI signals for display. The HDMI signals are then displayed on different displays via the HDMI interface. This application provides a signal adapter board for multi-size displays, supporting multiple video signal input formats. It achieves compatibility with multiple video sources, enabling the system to flexibly handle signal input from different sources, avoiding the limitations of traditional technologies that only support a single signal format.

Description

Technical Field

[0001] This application belongs to the field of automotive display technology, specifically relating to a signal adapter board and display screen for multi-size displays. Background Technology

[0002] Currently, with the continuous advancement and widespread application of display technology, video signal switching and display technologies are widely used in various devices. Especially in the fields of high-resolution display devices and multi-screen display technology, the demand for video stream switching, conversion, and display is increasing. Existing patented technologies mainly focus on video signal switching, conversion, and display solutions, but they still have certain limitations, specifically: existing HDMI interface connection to a screen for display is limited to video source switching and does not involve advanced applications such as serializers; or it is limited to switching between LVDS or MINI LVDS signals and outputting HDMI signals; in addition, there is a screen-pointing solution applied to the Maxim Integrated MAX96751 deserializer, which uses the I.X6 solution to achieve the lighting function of the rear headrest screens and adds a compatible design, supporting coaxial and differential signal output. It mainly changes the original 1-to-1 screen-pointing device to a 1-to-2 screen-pointing device, but contrary to the need for multiple signals output to the same screen, its application scenario is relatively specific and only suitable for small-scale multi-screen display needs.

[0003] In summary, existing technologies mainly focus on the development of multi-video stream switching displays and one-to-two or multi-screen devices, exhibiting certain technological commonalities and largely limited to low-resolution displays and traditional video signal conversion. With the increasing prevalence of video display technologies and high-resolution display devices, existing technologies still cannot meet the demands of multi-display application scenarios in terms of processing multiple video streams, signal conversion efficiency, and the flexibility of multi-screen displays. Utility Model Content

[0004] To address the shortcomings of the existing technology, this application proposes a signal adapter board for multi-size displays. This adapter board supports various video signal input formats, including GMS L2 / FPD, LINK / EDP, LVDS, HDMI, and MINI. By converting and integrating these different video signal formats, compatibility with multiple video sources is achieved, enabling the system to flexibly handle signal input from different sources and avoiding the limitations of traditional technologies that only support a single signal format.

[0005] In a first aspect, the signal adapter board for multi-size displays described in this application includes: a deserializer (DES) assembly section, an FPGA module, a video signal converter, and an HDMI interface; wherein...

[0006] The DES deserializer assembly consists of multiple deserializers.

[0007] The DES deserializer assembly receives video signals from different serializers at the DHU vehicle host and converts the GMSL signal or FPD LINK signal into EDP and LVDS signals. The FPGA module converts the EDP and LVDS signals into LVDS signals, and then the video signal converter converts the LVDS signals into HDMI signals for screen display. The HDMI signals are then displayed on different displays through the HDMI interface.

[0008] Preferably, the signal adapter board for multi-size displays further includes a power module; the power module includes a first DC-DC module, a second DC-DC module, and a third DC-DC module.

[0009] The first, second, and third DC-DC modules are all connected to an external 12V power supply.

[0010] The first DC-DC module converts the 12V power supply to 5V to power the FPGA module;

[0011] The second DC-DC module converts the 12V power supply to 3.3V to power the DES (Deserializer Equipped System) section.

[0012] The third DC-DC module converts the 12V power supply to 1.8V to power the MCU.

[0013] Preferably, the signal adapter board for multi-size displays further includes:

[0014] A MOSFET switching circuit is provided between the second DC-DC module and the deserializer.

[0015] The MOSFET switching circuit includes: MOSFET Q1 and transistor D1;

[0016] The gate of the MOS transistor Q1 is connected to the transistor D1;

[0017] The drain of the MOS transistor Q1 is connected to the input terminal of the deserializer, and the source of the MOS transistor Q1 is connected to the input terminal of the second DC-DC module.

[0018] Preferably, the signal adapter board for multi-size displays further includes:

[0019] The MCU is connected to the video signal converter via I2C.

[0020] Preferably, the signal adapter board for multi-size displays further includes:

[0021] The MCU is connected to the DES deserializer assembly section.

[0022] Preferably, the signal adapter board for multi-size displays further includes:

[0023] The second and third DC-DC modules are also connected to the switch SW.

[0024] Preferably, the signal adapter board for multi-size displays further includes:

[0025] The display screen includes at least different models of vehicle-mounted displays.

[0026] In a second aspect, a display screen includes different models of vehicle-mounted displays, which are connected to the DHU vehicle-mounted host via a signal adapter board for multi-size displays as described in the first aspect.

[0027] Compared with the prior art, the advantages of this application are as follows:

[0028] This application provides a signal adapter board for multi-size displays, supporting various video signal input formats including GMS L2 / FPD, LINK / EDP, LVDS, HDMI, and MINI. By converting and integrating these different video signal formats, compatibility with multiple video sources is achieved, enabling the system to flexibly handle signal input from different sources and avoiding the limitations of traditional technologies that only support a single signal format.

[0029] This application integrates different deserializer solutions, seamlessly connecting and processing video signals from various deserializers to ensure stable display of all signal sources on a single screen. This solution enhances system compatibility and flexibility, supporting more diverse application scenarios and adapting to changing device and application requirements, making it particularly suitable for multi-size display applications. Regardless of screen size, the signal adapter board effectively processes and converts signals, ensuring high-definition display effects for different sized display devices.

[0030] The signal adapter board of this application enables rapid conversion and unified output of video signals of different formats and deserializers, reducing the latency and loss caused by multiple conversions and signal transmissions in traditional technologies. This significantly improves the response speed and image display smoothness of the video display system, enhancing the user experience. Furthermore, when expanding the system, it is not necessary to replace multiple components; only the adapter board solution needs to be adjusted to meet the display requirements of different specifications and needs. Attached Figure Description

[0031] Figure 1This is a schematic diagram of a signal adapter board for multi-size displays.

[0032] Figure 2 This is a schematic diagram of the display screen.

[0033] Figure 3 This is a MOSFET switching circuit. Detailed Implementation

[0034] 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.

[0035] Example 1, as Figure 1 As shown, the signal adapter board for multi-size displays described in this application includes: a deserializer (DES) assembly section, an FPGA module, a video signal converter, and an HDMI interface; wherein,

[0036] The DES deserializer assembly consists of multiple deserializers.

[0037] The DES deserializer assembly receives video signals from different serializers at the DHU vehicle host and converts the GMSL signal or FPD LINK signal into EDP and LVDS signals. The FPGA module converts the EDP and LVDS signals into LVDS signals, and then the video signal converter converts the LVDS signals into HDMI signals for screen display. The HDMI signals are then displayed on different displays through the HDMI interface.

[0038] Preferably, the DES (deserializer) assembly is mainly composed of the following TI and Maxim Integrated DES deserializer assemblies, primarily used in common automotive display solutions, capable of supporting the illumination of screens of different sizes (different pixel counts):

[0039]

[0040] Preferably, the signal adapter board for multi-size displays further includes a power module; the power module includes a first DC-DC module, a second DC-DC module, and a third DC-DC module. Preferably, the first DC-DC module, the second DC-DC module, and the third DC-DC module are SA24493TLQ.

[0041] The first, second, and third DC-DC modules are all connected to an external 12V power supply.

[0042] The first DC-DC module converts the 12V power supply to 5V to power the FPGA module;

[0043] The second DC-DC module converts the 12V power supply to 3.3V to power the DES (Deserializer Equipped System) section.

[0044] The third DC-DC module converts the 12V power supply to 1.8V to power the MCU.

[0045] Preferably, the signal adapter board for multi-size displays further includes:

[0046] like Figure 3 As shown, a MOSFET switching circuit is provided between the second DC-DC module and the deserializer. This MOSFET switching circuit controls the power-on / off timing of the deserializer and the FPGA to ensure that signals do not interfere with each other during power-on and power-off processes. For example, the FPGA module is typically powered after the deserializer, and when the system is powered off, the deserializer is powered off first, followed by the FPGA module. This control method not only ensures the normal operation of the hardware but also improves the system's fault tolerance under unexpected conditions.

[0047] Specifically, the MOSFET switching circuit includes: MOSFET Q1 and transistor D1;

[0048] The gate of the MOS transistor Q1 is connected to the transistor D1;

[0049] The drain of the MOS transistor Q1 is connected to the input terminal of the deserializer, and the source of the MOS transistor Q1 is connected to the input terminal of the second DC-DC module.

[0050] Preferably, the signal adapter board for multi-size displays further includes:

[0051] The MCU connects to the video signal converter via I2C. The MCU can control the video signal converter's operating mode, configuration, and status monitoring through the I2C interface. The video signal converter converts input video signals (such as HDMI, VGA, or DisplayPort signals) into a signal format suitable for the display driver. I2C is a commonly used serial communication protocol. Through the I2C interface, the MCU can send control commands to the video signal converter or read status information, thereby achieving precise control over the signal conversion process. For example, adjusting the video signal resolution or switching the input source. I2C communication enables efficient data exchange and command control between modules, and the operation of different modules can be flexibly configured according to actual needs. For example, through I2C, the MCU can send signal format switching commands to the video signal converter, or control the deserializer's operating status; it can also send voltage adjustment commands to the DC-DC module to ensure stable power supply. Through this communication mechanism, each module in the system can operate precisely according to the MCU's instructions, thereby achieving coordinated operation of the entire system.

[0052] Preferably, the signal adapter board for multi-size displays further includes:

[0053] The MCU connects to the DES (Deserializer Electronic Sequence) assembly section of the deserializer, and is responsible for controlling and monitoring the deserializer. Specifically, the MCU detects the status of the "Video Lock" signal to ensure that the video signal has been successfully unlocked and is ready for display. The Video Lock signal is an indicator signal indicating whether the video deserializer has successfully received a valid synchronization signal and is ready to output stable video data. If the video signal is not properly locked, video display will malfunction (such as screen tearing or no signal). The MCU monitors this signal to ensure system stability; only when the Video Lock signal is normal can subsequent processing and display operations continue. In other words, the MCU detects the "Video Lock" signal by connecting to the status pin of the deserializer. The deserializer outputs a digital signal indicating whether the video signal has been successfully unlocked. If the signal is normal, the MCU will determine this through internal logic and continue operating; if the signal is abnormal, the MCU will perform error handling and notify other modules or the user through logic control.

[0054] The MCU is responsible not only for signal detection but also for the logic control of the entire system. It monitors the system and detects errors based on feedback signals from each module. Each module typically has error pins that trigger when a module malfunctions. By reading the status of these error pins, the MCU can promptly detect any abnormalities in module operation (such as overcurrent, overtemperature, signal loss, etc.). When a module malfunctions, the MCU records the error information and reports it to the system or user via the communication interface, ensuring timely fault detection and handling.

[0055] The MCU can perform different reporting processes based on the error type. For example, it can send error information to the main control system via I2C, or display the module's error status via LED indicators. If there are multiple modules in the system, the MCU can manage multiple error reports simultaneously and process them according to their priority.

[0056] The MCU can also monitor the overall system operating status, such as power supply voltage and module operating status. Through real-time monitoring, the MCU can determine whether the system is in normal working condition and alert the user through alarm mechanisms (such as audible and visual alarms).

[0057] Power-on / off control is another crucial function of MCU modules, especially in power management. The MCU needs to ensure that each module starts and shuts down at the appropriate timing to meet the timing requirements of various chips and prevent system failures caused by power instability or timing errors. The MCU manages the power of each module by controlling GPIOs (General Purpose Input / Output Ports). GPIOs can be configured for output mode. When the MCU needs to power a module, it sets the corresponding GPIO pin high to start the module's power supply. Conversely, when power needs to be turned off, the MCU sets the GPIO pin low to cut off the power. For example, some chips require a certain delay to stabilize upon power-on, or require input signals to be disabled before power is cut off upon power-off. Precise GPIO control by the MCU ensures that each module performs power-on and power-off operations at the appropriate timing, preventing system instability or damage caused by power problems.

[0058] The MCU can also perform dynamic power management based on the system's operating status. When the system is in standby mode, the MCU can control GPIO to shut down the power of certain modules, thereby reducing overall power consumption and improving system energy efficiency. When the system needs to operate at full load, the MCU will re-energize the power of all modules as required, ensuring efficient system operation.

[0059] Preferably, the signal adapter board for multi-size displays further includes:

[0060] The second and third DC-DC modules are also connected to the switch SW.

[0061] The switch (SW) plays a crucial role in power management and current distribution. By connecting the second and third DC-DC modules to the switch, the switch can switch between multiple power sources and achieve load balancing. Based on the system load, the switch determines which DC-DC module to supply power to each module, ensuring stable and efficient power supply. In this way, the system can optimize power management according to different operating modes (such as high-power or low-power modes).

[0062] Preferred, such as Figure 2 As shown, the signal adapter board for multi-size displays also includes:

[0063] The display screen includes at least different models of in-vehicle displays. Preferably, the in-vehicle display can be a central control screen, an instrument panel display, a rearview mirror display, a seatback entertainment display, a reversing camera display, etc.

[0064] Example 2: A display screen, the display screen including different models of vehicle-mounted displays, the vehicle-mounted displays being connected to the DHU vehicle-mounted host via a signal adapter board for multi-size display screens as described in Example 1.

[0065] The DHU (Display Host Unit) is the core processing unit of the in-vehicle system, responsible for controlling, processing, and transmitting image or video signals to the in-vehicle display. It is usually integrated with other modules of the in-vehicle system (such as entertainment systems and navigation systems) to process various multimedia signals.

[0066] Different models of in-vehicle displays may have different sizes (such as 7 inches, 10 inches, 15 inches, etc.), while the output signal format of the DHU host may be fixed. Therefore, the adapter board described in this application adjusts the signal output to adapt to different sized displays. This includes adjusting the display's resolution, refresh rate, and video signal interface.

[0067] The input signals for in-vehicle displays may include HDMI, LVDS, MIPI DSI, etc., while the output signal format and interface of the DHU head unit may be different. A signal adapter board can convert these signals to ensure compatibility between the head unit and the display screen.

[0068] In summary, the display screen design in this application provides a flexible solution for connecting to the DHU (Digital Hub) vehicle-mounted host via a signal adapter board, enabling it to adapt to different models and sizes of vehicle-mounted displays. This not only enhances the scalability and compatibility of the vehicle-mounted system but also improves the adaptability of car owners and manufacturers to different needs and vehicle models. This design ensures that the system can stably and clearly display the required content regardless of the size of the vehicle-mounted display.

[0069] 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.

[0070] 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.

[0071] 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 signal adapter board for multi-size displays, characterized in that, include: The DES (Deserializer and Executor) assembly includes an FPGA module, a video signal converter, and an HDMI interface; among which, The DES deserializer assembly consists of multiple deserializers. The DES deserializer assembly receives video signals from different serializers at the DHU vehicle host and converts the GMSL signal or FPD LINK signal into EDP and LVDS signals. The FPGA module converts the EDP and LVDS signals into LVDS signals, and then the video signal converter converts the LVDS signals into HDMI signals for screen display. The HDMI signals are then displayed on different displays through the HDMI interface.

2. The signal adapter board for multi-size displays according to claim 1, characterized in that, Also includes: Power module; The power supply module includes: a first DC-DC module, a second DC-DC module, and a third DC-DC module.

3. A signal adapter board for multi-size displays according to claim 2, characterized in that, Also includes: The first, second, and third DC-DC modules are all connected to an external 12V power supply.

4. A signal adapter board for multi-size displays according to claim 3, characterized in that, Also includes: The first DC-DC module converts the 12V power supply to 5V to power the FPGA module; The second DC-DC module converts the 12V power supply to 3.3V to power the DES (Deserializer Equipped System) section. The third DC-DC module converts the 12V power supply to 1.8V to power the MCU.

5. A signal adapter board for multi-size displays according to claim 4, characterized in that, Also includes: A MOSFET switching circuit is provided between the second DC-DC module and the deserializer; The MOSFET switching circuit includes: MOSFET Q1 and transistor D1; The gate of the MOS transistor Q1 is connected to the transistor D1; The drain of the MOS transistor Q1 is connected to the input terminal of the deserializer, and the source of the MOS transistor Q1 is connected to the input terminal of the second DC-DC module.

6. A signal adapter board for multi-size displays according to claim 5, characterized in that, Also includes: The MCU is connected to the video signal converter via I2C.

7. A signal adapter board for multi-size displays according to claim 6, characterized in that, Also includes: The MCU is connected to the DES deserializer assembly section.

8. A signal adapter board for multi-size displays according to claim 7, characterized in that, Also includes: The second and third DC-DC modules are also connected to the switch SW.

9. A signal adapter board for multi-size displays according to claim 8, characterized in that, Also includes: The display screen includes at least different models of vehicle-mounted displays.

10. A display screen, characterized in that, The display screen includes different models of vehicle-mounted displays, which are connected to the DHU vehicle-mounted host via a signal adapter board for multi-size displays as described in any one of claims 1-9.

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