Vehicle-mounted GMSL to HDMI display system

Abstract

The utility model discloses a vehicle-mounted GMSL to HDMI (High Definition Multimedia Interface) display system, which is used for converting a coaxial GMSL signal into an HDMI signal display system to realize external connection with a traditional display screen with an HDMI interface, and comprises a coaxial video output module, a GMSL to HDMI video signal conversion module and an HDMI display module. According to the utility model, a more universal HDMI interface mode is provided for a vehicle-mounted entertainment display system, long-distance transmission of high-definition video signals in a vehicle-mounted environment is realized, and the vehicle-mounted GMSL-to-HDMI display system realizes coaxial GMSL video output conversion of the controller and is compatible with GMSL digital camera video output conversion, so that the vehicle-mounted entertainment display system is more convenient to use. The GMSL digital camera and the HDMI display screen are seamlessly connected, and an efficient and reliable solution is provided for vehicle-mounted high-definition video display.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted electronic systems, and particularly relates to a vehicle-mounted GMSL to HDMI display system. Background Technique

[0002] With the rapid development of the ADAS (Advanced Driver Assistance System) industry, many Tier1 companies have been catalyzed to produce automotive electronics-related products, such as vehicle-mounted digital high-definition cameras, surround view controllers, etc. Currently, most vehicle-mounted digital cameras / surround view controllers on the market use the coaxial GMSL method for video signal transmission. Since many Tier1 companies that develop digital cameras or surround view controllers do not have or will not invest resources in developing a supporting display screen, the development of digital cameras / surround view controllers brings great trouble to the development process without a corresponding display screen to confirm the display effect.

[0003] Currently, most vehicle-mounted digital cameras / surround view controllers on the market use the coaxial GMSL method for video signal transmission. Since many Tier1 companies that develop digital cameras or surround view controllers do not have or will not invest resources in developing a supporting display screen, the development of digital cameras / surround view controllers brings great trouble to the development process without a corresponding display screen to confirm the display effect. Therefore, it is of great significance to develop a display system that can convert coaxial GMSL signals into HDMI signals to realize the display on an external traditional display screen with an HDMI interface. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a vehicle-mounted GMSL to HDMI display system, which realizes the conversion of the coaxial GMSL video output of the controller, and at the same time is compatible with the video output conversion of the GMSL digital camera, realizes the long-distance transmission of high-definition video signals in the vehicle environment, and provides a richer entertainment and driving experience for modern vehicles.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the utility model provides the following technical solutions: A vehicle-mounted GMSL to HDMI display system converts coaxial GMSL signals into an HDMI signal display system to realize the connection to an external traditional display screen with an HDMI interface, and includes a coaxial video output module, a GMSL to HDMI video signal conversion module, and an HDMI display module;

[0008] The coaxial video output module is signal-connected to the GMSL to HDMI video signal conversion module through GMSL and provides a video signal output in GMSL format;

[0009] The GMSL-to-HDMI video signal conversion module is connected to the video input module through a coaxial cable via a Fakra connector, and is connected to the HDMI display module through an HDMI interface via an HDMI transmission line;

[0010] The HDMI display module consists of a monitor with an HDMI interface, and its main function is to display the HDMI video signal output by the GMSL-to-HDMI conversion board on the screen.

[0011] Preferably, the GMSL-to-HDMI video signal conversion module includes:

[0012] GMSL deserialization unit: Deserialize the input GMSL video signal and convert it into a MIPI format signal for transmission to the HDMI encoder unit;

[0013] HDMI video encoder unit: Encode the MIPI signal input by the GMSL deserialization unit into an HDMI format video signal and output it to an external HDMI display unit;

[0014] MCU unit: Configure the GMSL deserialization unit and the HDMI video encoder unit through IIC communication to achieve decoding of the input GMSL signal and encoding of the output HDMI signal.

[0015] Preferably, the GMSL-to-HDMI video signal conversion module further includes:

[0016] Power management unit: Provide necessary power supply for each unit on the GMSL-to-HDMI video signal conversion module;

[0017] POC power unit: When accessing a GMSL digital camera, provide necessary power support for the camera module. By switching the POC power enable, it is compatible with the conversion of the controller coaxial GMSL video output to HDMI and the conversion of the GMSL digital camera video output to HDMI;

[0018] POC filter circuit unit: Effectively filter out high-frequency signal interference during signal transmission to ensure signal integrity and power stability.

[0019] Preferably, the GMSL digital camera is used as the video input source, and the POC power unit is enabled through a switch to provide power support for the external GMSL digital camera.

[0020] Preferably, the MCU unit configures the internal registers of the GMSL deserialization unit and the HDMI video encoder unit through IIC respectively to ensure the correct decoding of the input GMSL signal and the correct encoding of the output HDMI signal.

[0021] Preferably, the GMSL video signal is input through a coaxial cable to the GMSL deserializer unit of the GMSL-to-HDMI video signal conversion module for deserialization operation, and the GMSL deserializer unit decodes the video signal into a MIPI format signal and inputs it to the HDMI video encoder unit.

[0022] Preferably, the HDMI encoder unit encodes the MIPI signal output by the GMSL deserializer unit into an HDMI format video signal and outputs it to an external HDMI display unit.

[0023] Preferably, the HDMI display receives the HDMI signal output by the GMSL-to-HDMI video signal conversion module and displays it on the screen.

[0024] (III) Beneficial Effects

[0025] Compared with the prior art, the present utility model provides a vehicle-mounted GMSL-to-HDMI display system, which has the following beneficial effects: the present utility model provides a more popular HDMI interface method for the vehicle-mounted entertainment display system, realizes the long-distance transmission of high-definition video signals in a vehicle-mounted environment, the vehicle-mounted GMSL-to-HDMI display system realizes the conversion of the coaxial GMSL video output of the controller, and at the same time is compatible with the conversion of the GMSL digital camera video output, enabling seamless connection between the GMSL digital camera and the HDMI display screen, and providing an efficient and reliable solution for vehicle-mounted high-definition video display. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the overall framework diagram of the vehicle-mounted GMSL-to-HDMI display system of the present utility model;

[0027] Figure 2 is the schematic diagram of the composition of each unit inside the main vehicle-mounted GMSL-to-HDMI video signal conversion module of the present utility model;

[0028] Figure 3 is the schematic diagram of the working process of the vehicle-mounted GMSL-to-HDMI display system of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In order to better understand the purpose, structure and function of the present utility model, the following further describes in detail a vehicle-mounted GMSL-to-HDMI display system of the present utility model in conjunction with the accompanying drawings and specific embodiments.

[0030] Embodiment 1

[0031] Please refer to Figure 1-2

[0032] The present utility model: A vehicle-mounted GMSL to HDMI display system that converts a coaxial GMSL signal into an HDMI signal display system to realize an external connection to a traditional display screen with an HDMI interface. This system consists of a coaxial video output module, a GMSL to HDMI video signal conversion module, and an HDMI display module;

[0033] Specifically, the coaxial video output module is signal-connected to the GMSL to HDMI video signal conversion module through GMSL and provides a video signal output in GMSL format; the GMSL to HDMI video signal conversion module is connected to the video input module through a Fakra connector via a coaxial cable and is connected to the HDMI display module through an HDMI interface via an HDMI transmission line; the HDMI display module consists of a display with an HDMI interface, and its main function is to display the HDMI video signal output by the GMSL to HDMI conversion board on the screen.

[0034] Furthermore, the GMSL to HDMI video signal conversion module mainly consists of a GMSL deserialization unit, an HDMI video encoder unit, an MCU unit, a power management unit, a POC power unit, and a POC filter circuit unit.

[0035] Among them, the GMSL deserialization unit performs deserialization operations on the GMSL video signal input by the GMSL digital camera or the surround view controller and converts it into a MIPI format signal for transmission to the HDMI encoder unit; the HDMI video encoder unit encodes the MIPI signal input by the GMSL deserialization unit into an HDMI format video signal for output to an external HDMI display unit; the MCU unit configures the GMSL deserialization unit and the HDMI video encoder unit through IIC communication to achieve decoding of the input GMSL signal and encoding of the output HDMI signal; the power management unit provides necessary power for each unit on the GMSL to HDMI video signal conversion module; the POC power unit provides necessary power support for the camera module when a GMSL digital camera is connected. By switching the POC power enable, it is compatible with both the conversion of the controller's coaxial GMSL video output to HDMI and the conversion of the GMSL digital camera's video output to HDMI. The POC power unit is turned on / off through switch enabling, and this switching method includes but is not limited to hard switches, jumper caps, and single-chip microcomputer I / O program control, etc.; the POC filter circuit unit effectively filters high-frequency signal interference during signal transmission to ensure signal integrity and power stability.

[0036] Embodiment 2

[0037] Please refer to Figure 3

[0038] The in-vehicle GMSL to HDMI display system of the present utility model realizes the conversion of the coaxial GMSL video output of the controller, and at the same time is compatible with the conversion of the video output of the GMSL digital camera, enabling seamless connection between the GMSL digital camera and the HDMI display screen. By switching the POC power enable, it is also compatible with the conversion of the coaxial GMSL video output of the controller to HDMI and the conversion of the video output of the GMSL digital camera to HDMI, providing an efficient and reliable solution for in-vehicle high-definition video display. The specific implementation method is as follows:

[0039] First step: Determine whether the video input source is a GMSL digital camera or a surround view controller. If the GMSL digital camera is the video input source, the POC power supply unit needs to be enabled through a switch to provide power support for the external GMSL digital camera. If it is the output of the surround view controller, this step can be skipped;

[0040] Second step: The MCU configures the internal registers of the GMSL deserializer unit and the HDMI video encoder unit respectively through IIC to ensure the correct decoding of the input GMSL signal and the correct encoding of the output HDMI signal;

[0041] Third step: The GMSL video signal output by the GMSL digital camera or the surround view controller is input through a coaxial cable to the GMSL deserializer unit in the GMSL to HDMI conversion board for deserialization operation;

[0042] Fourth step: The GMSL deserializer unit decodes the video signal into a MIPI format signal and inputs it to the HDMI video encoder unit;

[0043] Fifth step: The HDMI encoder encodes the MIPI signal output by the GMSL deserializer into an HDMI format video signal and outputs it to the external HDMI display unit;

[0044] Sixth step: The HDMI display receives the HDMI signal output by the GMSL to HDMI video signal conversion module and displays it on the screen.

[0045] The in-vehicle entertainment display system of the present utility model provides a more popular HDMI interface method, realizes the long-distance transmission of high-definition video signals in the in-vehicle environment, and provides a richer entertainment and driving experience for modern vehicles, which has good popularization significance.

[0046] It will be understood that the present utility model is described by way of some embodiments, and those skilled in the art will be aware that, without departing from the spirit and scope of the present utility model, various changes or equivalent substitutions may be made to these features and embodiments. Additionally, under the teaching of the utility model, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A vehicle-mounted GMSL to HDMI display system that converts a coaxial GMSL signal into an HDMI signal display system to realize an external connection to a traditional display screen with an HDMI interface, characterized in that, It consists of a coaxial video output module, a GMSL to HDMI video signal conversion module, and an HDMI display module; The coaxial video output module is signal-connected to the GMSL to HDMI video signal conversion module through GMSL and provides a video signal output in GMSL format; The GMSL to HDMI video signal conversion module is connected to the video input module through a Fakra connector via a coaxial cable and is connected to the HDMI display module through an HDMI interface via an HDMI transmission line; The HDMI display module consists of a display with an HDMI interface, and its main function is to display the HDMI video signal output by the GMSL to HDMI conversion board on the screen.

2. The vehicle-mounted GMSL to HDMI display system according to claim 1, wherein The GMSL to HDMI video signal conversion module includes: GMSL deserialization unit: Deserialize the input GMSL video signal and convert it into a MIPI format signal for transmission to the HDMI encoder unit; HDMI video encoder unit: Encode the MIPI signal input by the GMSL deserialization unit into an HDMI format video signal and output it to the external HDMI display unit; MCU unit: Configure the GMSL deserialization unit and the HDMI video encoder unit through IIC communication to achieve decoding of the input GMSL signal and encoding of the output HDMI signal.

3. The vehicle-mounted GMSL to HDMI display system according to claim 2, wherein, The GMSL to HDMI video signal conversion module also includes: Power management unit: Provide necessary power supply for each unit on the GMSL to HDMI video signal conversion module; POC power unit: When a GMSL digital camera is connected, provide necessary power support for the camera module. By switching the POC power enable, it is compatible with the conversion of the controller's coaxial GMSL video output to HDMI and the conversion of the GMSL digital camera video output to HDMI; POC filter circuit unit: Effectively filter out high-frequency signal interference during signal transmission to ensure signal integrity and power stability.

4. The vehicle-mounted GMSL to HDMI display system according to claim 3, wherein, The GMSL digital camera is used as the video input source. By enabling the POC power unit through a switch, power support is provided for the external GMSL digital camera.

5. The vehicle-mounted GMSL to HDMI display system according to claim 4, wherein, The MCU unit configures the internal registers of the GMSL deserialization unit and the HDMI video encoder unit through IIC respectively to ensure the correct decoding of the input GMSL signal and the correct encoding of the output HDMI signal.

6. The vehicle-mounted GMSL to HDMI display system according to claim 5, characterized in that, The GMSL video signal is input into the GMSL deserialization unit of the GMSL to HDMI video signal conversion module through a coaxial cable for deserialization operation. The GMSL deserialization unit decodes the video signal into a MIPI format signal and inputs it into the HDMI video encoder unit.

7. The vehicle-mounted GMSL to HDMI display system according to claim 6, wherein, The HDMI encoder unit encodes the MIPI signal output by the GMSL deserialization unit into an HDMI format video signal and outputs it to the external HDMI display unit.

8. The vehicle-mounted GMSL-to-HDMI display system according to claim 7, wherein The HDMI display receives the HDMI signal output by the GMSL to HDMI video signal conversion module and displays it on the screen.

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