Display screen driving board card supporting multiple protocol video inputs and multiple display outputs

Abstract

The utility model discloses a display screen driving board card supporting multiple protocol video inputs and multiple display outputs, comprising a control board integrated with a video access unit and a core processing unit; the video access unit is used for collecting videos and converting the videos into MIPI-CSI input signals or DVP input signals supported by the core processing unit, the video access unit is provided with a GMSL interface deserializing module, an FPD-LINK interface deserializing module, an AHDL interface deserializing module, a Cockles-Link interface deserializing module and an APIX interface deserializing module, and the video access unit is used for receiving and decoding video signals. The video access unit is provided with an MIPI-CSI output interface and a DVP output interface, and is used for connecting the core processing unit; the video access unit is also provided with a data conversion module A which is used for performing data conversion on the decoded video signal; and the core processing unit is used for decoding the input video signal again and transmitting decoding information to the display screen for displaying.

Description

TECHNICAL FIELD

[0001] The utility model relates to video display field, concretely to a display screen drive board card of support multiple protocol video input and multiple display output. BACKGROUND

[0002] The current vehicle-mounted display screen drive board card on the market mainly designs and customizes the drive board card according to the selected video format and display screen specification, and the main video output interface has GMSL, FPD-LINK, AHDL, Clockless-Link, APIX etc. according to the protocol, and the mainstream display screen interface has LVDS, MIPI, eDP etc. The customized development of the display screen drive board card can cause the problems of long product early development verification period, large investment etc. UTILITY MODEL CONTENT

[0003] The utility model aims at providing a display screen drive board card of support multiple protocol video input and multiple display output to solve the problems of long product early development verification period and large investment in the customized development of the display screen drive board card.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme, a display screen drive board card of support multiple protocol video input and multiple display output, including: control board, the control board is integrated with video access unit and core processing unit,

[0005] The video access unit is used for collecting video and converting into the MIPI-CSI input signal or DVP input signal supported by the core processing unit, the video access unit is equipped with GMSL interface deserializing module, FPD-LINK interface deserializing module, AHDL interface deserializing module, Clockless-Link interface deserializing module, APIX interface deserializing module, is used for receiving video signal and decodes, the video access unit is equipped with MIPI-CSI output interface and DVP output interface, is used for connecting the core processing unit, the video access unit is also equipped with data conversion module A, is used for carrying out data conversion to the decoded video signal,

[0006] The core processing unit is used for decoding the input video signal again, and the decoded information is transmitted to the display screen and is displayed, the core processing unit is equipped with MIPI-CSI input interface, DVP input interface, LVDS output interface, MIPI-DSI output interface, eDP output interface, I2C interface, the MIPI-CSI input interface and the DVP input interface are used for connecting the MIPI-CSI output interface and the DVP output interface of the video access unit respectively, and the LVDS output interface, MIPI-DSI output interface, eDP output interface, I2C interface are used for connecting the display screen of corresponding interface type respectively.

[0007] The core processing unit is provided with a data conversion module B for converting a video signal of an LVDS type.

[0008] The core processing unit is further provided with an HDMI input interface for connecting a device supporting an HDMI protocol.

[0009] Further, the core processing unit further comprises RAM and ROM memories.

[0010] Further, the core processing unit adopts an RK3588M video conversion chip.

[0011] Further, the core processing unit is further provided with a backlight module for controlling a backlight voltage value of a display screen to realize brightness adjustment.

[0012] The backlight module selects a TI or MPS driving control chip.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The utility model supports the input of GMSL, FPD-LINK, AHDL, Clockless-Link, APIX, HDMI protocol signals and the output of MIPI-DSI, LVDS, eDP signals, the input interface and output interface are rich, and the input and output of the current mainstream video signals can be compatible. And support single-in multi-out, and the display screen driving board card meets the display verification of verifying multiple protocol format videos on different display screens, greatly reduces the time period of screen specification model verification, chip function verification and scheme evaluation, and further reduces the cost investment.

[0015] The utility model will be further described in combination with the drawings and specific embodiments. DRAWINGS

[0016] Figure 1 A structure diagram of a display screen driving board card supporting multiple protocol video input and multiple display output is provided in the utility model. CONCRETE EMBODIMENT

[0017] The technical scheme in the utility model embodiment will be clearly and completely described in combination with the drawings in the utility model embodiment, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0018] In the description of the utility model, need understanding is, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and so on indicated orientation or positional relation is based on the orientation or positional relation shown in the drawing, just is for the convenience of describing the utility model and simplifying the description, and is not indicated or implied that the device or element must have a particular orientation, with a particular orientation structure and operation, therefore can not be understood as the limitation of the utility model.

[0019] Refer to Figure 1 The utility model proposes a kind of display screen drive board card of supporting multiple protocol video input and multiple display output, comprising:

[0020] A kind of display screen drive board card of supporting multiple protocol video input and multiple display output, comprising: control board, the control board is integrated with video access unit 100 and core processing unit 200;

[0021] The video access unit 100 is used to collect video and convert into the MIPI-CSI input signal or DVP input signal that the core processing unit 200 supports, the video access unit 100 is equipped with GMSL interface deserializing module, FPD-LINK interface deserializing module, AHDL interface deserializing module, Clockless-Link interface deserializing module, APIX interface deserializing module, for receiving video signal and decoding, the video access unit 100 is equipped with MIPI-CSI output interface and DVP output interface, for connecting the core processing unit 200;The video access unit 100 is also equipped with data conversion module A, for the data conversion of video signal after decoding;

[0022] The core processing unit 200 is used to decode input video signal again, and decoded information is transmitted to display screen and is shown, the core processing unit 200 is equipped with MIPI-CSI input interface, DVP input interface, LVDS output interface, MIPI-DSI output interface, eDP output interface, I2C interface, the MIPI-CSI input interface and the DVP input interface are used for connecting the MIPI-CSI output interface and DVP output interface of the video access unit 100 respectively, the LVDS output interface, MIPI-DSI output interface, eDP output interface, I2C interface are used for connecting the display screen of corresponding interface type respectively;

[0023] The core processing unit 200 is equipped with data conversion module B, for the data conversion of LVDS type video signal;

[0024] The core processing unit 200 is also equipped with HDMI input interface, for connecting the equipment of supporting HDMI protocol;

[0025] The core processing unit 200 further comprises RAM and ROM memories;

[0026] The core processing unit 200 is further provided with a backlight module for controlling the backlight voltage value of the display screen to realize brightness adjustment;

[0027] The backlight module selects a TI or MPS driving control chip.

[0028] The video access unit 100 comprises a GMSL interface deserializing module, an FPD-LINK interface deserializing module, an AHDL interface deserializing module, a Clockless-Link interface deserializing module, and an APIX interface deserializing module. In the present scheme, any one of the TI, Maxin, Kion, ROHM, and Inova semiconductor video deserializing schemes is used. The input interface selects a HSD and minifakra connector. Different types of video signals are received through different deserializing modules, and different types of video signals (coaxial / differential signals) are decoded into MIPI interface signals or LVDS interface signals or DVP interface signals. Then, the decoded MIPI interface signals or DVP interface signals are input to the core processing unit 200 through the corresponding MIPI-CSI input interface and DVP input interface. For the LVDS interface signal, it also needs to be converted into a MIPI signal through a conversion module A, and then the MIPI signal is transmitted to the core processing unit 200 through the MIPI-CSI input interface.

[0029] The core processing unit 200 adopts the RK3588M chip of Swallow Micro. The RK3588M chip has a deserializing device and a bottom-layer driving function of video signal format conversion, so that an additional MCU is not needed, and it supports 4PORT MIPI-CSI signal input, 1PORT HDMI signal input, 2PORT MIPI-DSI signal output, 2PORT MIPI-eDP signal output, 1PORT MIPI-DP signal output, has the functions of directly driving MIPI display screens and eDP display screens, supports a maximum data bandwidth output of 4K@P60, 4PORT USB2.0-hsot interface, 10PORT I2C interface, and 4PORT SPI interface.

[0030] The I / O interface of the core processing unit 200 comprises an HDMI input interface, a DVP input interface, a MIPI-CSI input interface, a MIPI-DSI output interface, an eDP output interface, an LVDS output interface, an I2C interface, and supports multiple channel interfaces such as PWM, hot plug detection, reset, interruption, and DDC;

[0031] The LVDS output interface, the MIPI-DSI output interface and the eDP output interface of the core processing unit 200 adopt interface design based on mainstream display screens of Jingdongfang, LG, SAMSUNG and the like, and the output connected display screen is an LCD panel supporting MIPI-DSI, eDP and LVDS signal interfaces. The core processing unit 200 is connected with an LVDS interface LCD panel, a MIPI-DSI interface LCD panel and an eDP interface LCD panel through the LVDS output interface, the MIPI-DSI output interface and the eDP output interface respectively, so as to realize video display. Since the core processing unit 200 supports connection of multiple LCD panels, that is, multiple LCD panels can be connected, the video signal transmitted from the video access unit 100 can be displayed on multiple different LCD panels through the core processing unit 200.

[0032] During use, the core processing unit 200 receives the video signal transmitted from the video access unit 100 through the MIPI-CSI input interface and the DVP input interface, and then displays the video signal on a display screen through the LVDS output interface, the MIPI-DSI output interface and the eDP output interface. For the LVDS type video signal, data conversion is further required through the data conversion module B, and then the video signal is transmitted to the LVDS interface LCD panel through the LVDS output interface for video display.

[0033] The backlight drive in the backlight module selects mainstream drive control chips of TI and MPS, and in the present scheme, a TI drive control chip is selected. The core processing unit 200 controls the backlight drive in the backlight module through an I2C interface to adjust the backlight voltage value, so as to realize change control of the display screen brightness. The core processing unit 200 can also realize touch screen coordinate data acquisition by connecting a TP display screen through the I2C interface, and an FPC connector is selected for the output interface.

[0034] The present utility model supports input of GMSL, FPD-LINK, AHDL, Clockless-Link, APIX and HDMI protocol signals, and output of MIPI-DSI, LVDS and eDP signals. The input interface and the output interface are rich, and can be compatible with input and output of the current mainstream video signals. The present utility model supports single input and multiple output, and the display screen drive board card can satisfy display verification of multiple protocol format videos on different display screens, greatly reduces the time period of screen specification model verification, chip function verification and scheme evaluation, and further reduces the cost investment.

[0035] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features thereof can be replaced equivalently. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A display screen driving board card supporting multiple protocol video inputs and multiple display outputs, characterized by, The application relates to a display screen driving board card supporting multiple protocol video inputs and multiple display outputs. The control board is integrated with a video access unit and a core processing unit. The video access unit is used for collecting video and converting into an MIPI-CSI input signal or a DVP input signal supported by the core processing unit, and is provided with a GMSL interface deserializing module, an FPD-LINK interface deserializing module, an AHDL interface deserializing module, a Clockless-Link interface deserializing module and an APIX interface deserializing module, which are used for receiving video signals and decoding, and the video access unit is provided with an MIPI-CSI output interface and a DVP output interface, which are used for connecting the core processing unit; the video access unit is also provided with a data conversion module A, which is used for data conversion of the decoded video signals. The core processing unit is used for decoding the input video signals again and transmitting the decoded information to a display screen for display, and is provided with an MIPI-CSI input interface, a DVP input interface, an LVDS output interface, an MIPI-DSI output interface, an eDP output interface and an I2C interface, wherein the MIPI-CSI input interface and the DVP input interface are respectively used for connecting the MIPI-CSI output interface and the DVP output interface of the video access unit, and the LVDS output interface, the MIPI-DSI output interface, the eDP output interface and the I2C interface are respectively used for connecting display screens of corresponding interface types. The core processing unit is provided with a data conversion module B, which is used for data conversion of the LVDS type video signals. The core processing unit is also provided with an HDMI input interface, which is used for connecting devices supporting the HDMI protocol.

2. The display screen driving board card supporting multiple protocol video inputs and multiple display outputs according to claim 1, wherein the core processing unit further comprises RAM and ROM memories.

3. The display screen driving board card supporting multiple protocol video inputs and multiple display outputs according to claim 1, wherein the core processing unit adopts an RK3588M video conversion chip.

4. The display screen driving board card supporting multiple protocol video inputs and multiple display outputs according to claim 1, wherein the core processing unit is also provided with a backlight module, which is used for controlling the backlight voltage value of the display screen to realize brightness adjustment. The backlight module selects a TI or MPS driving control chip. ​ ​ ​

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