Device and method for converting hdmi video signal into lvds video signal

A video signal conversion technology, applied in the field of devices for converting HDMI video signals into LVDS video signals, can solve the problems of few varieties and manufacturers, poor display effect and stability, high price of new display modules, etc.

Active Publication Date: 2018-11-27
WUHAN JINGCE ELECTRONICS GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, new display modules that receive HDMI signals are expensive, have fewer varieties and manufacturers, and have poor display effects and stability.

Method used

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  • Device and method for converting hdmi video signal into lvds video signal
  • Device and method for converting hdmi video signal into lvds video signal

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] The programmable logic device of this embodiment selects FPGA.

[0030] Such as figure 1 As shown, a device for converting an HDMI video signal into an LVDS video signal disclosed by the present invention includes a control module (1), an HDMI auxiliary signal analysis module (2), an HDMI data signal analysis module (3) arranged in an FPGA chip ), image packet analysis module (4), RGB signal conversion module (5), LVDS transmission link segmentation module (6) and LVDS video signal conversion module (7), transmission sequence synchronization module (8) and hot plug detection module (9), wherein the hot plug detection module (9) is connected to an external HDMI video signal source, the LVDS video signal conversion module (7) is connected to the LVDS module to be tested, and the control module (1) is connected to the host comput...

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Abstract

The invention discloses a device and method for converting HDMI video signals into LVDS (Low-Voltage Differential Signaling) video signals. The method comprises following steps of 1), receiving HDMI video signals; analyzing the HDMI video signals, thus obtaining HDMI data channel physical layer coding information and HDMI data channel quantity information; 2), carrying out physical layer decoding on the HDMI video signals according to the HDMI data channel physical layer coding information, thus obtaining an HDMI image data packet; 3), converting the HDMI image data packet into RGB signals according to the HDMI data channel quantity information; 4), segmenting the RGS signals into multilink RGB signals according to an LVDS configuration instruction; and 5), converting the multilink RGB signals into multilink LVDS video signals. According to the method and the device, HDMI video signal inputs of all specifications and standards can be supported; LVDS signal outputs of multilink transmission modes can be supported; and the electrical parameters of the output LVDS signals are not influenced by the HDMI video signals.

Description

technical field [0001] The present invention relates to the technical field of image signal processing, in particular to a device and method for converting an HDMI video signal into an LVDS video signal. Background technique [0002] The HDMI interface (High Definition Multimedia Interface) is a new type of image display interface that can support 4k resolution (3840×2160). The HDMI interface not only has a high transmission rate, with a maximum data transmission speed of 4.5GB / s, but also is reliable and stable. HDMI can be used with broadband digital content protection to prevent unauthorized copying of copyrighted audio and video content. [0003] However, due to various reasons such as production, technology, price, and consumer acceptance, the mainstream display modules on the market still stay on the interface standard of LVDS signal (Low-Voltage Differential Signaling), because the LVDS signal standard has already It is very mature, the screen display effect is relat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/01H04N5/765
CPCH04N5/765H04N7/01
Inventor 徐梦银朱亚凡
Owner WUHAN JINGCE ELECTRONICS GRP CO LTD
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