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Desktop video transmission system based on FPGA

A transmission system and video technology, applied in the field of desktop video transmission system, can solve the problems of transmission distance interference in conference environment, difficult to meet user requirements, etc., and achieve the effect of simple and convenient engineering layout and wiring, reduced delay, and high transmission quality.

Inactive Publication Date: 2016-12-07
深圳市华威智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The video transmission delay, image lossy compression algorithm, transmission distance, and requirements for conference environment interference of wireless projection technology can only meet some customers who do not have high requirements for video quality. Difficulty meeting user requirements

Method used

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  • Desktop video transmission system based on FPGA
  • Desktop video transmission system based on FPGA
  • Desktop video transmission system based on FPGA

Examples

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Embodiment 1

[0032] see Figure 1-Figure 12 , in an embodiment of the present invention, an FPGA-based desktop video transmission system is composed of four parts: a power supply part, a user interface sub-card, a main control processing sub-card, and a bottom board sub-card. The processing sub-card and the backplane sub-card, the user interface sub-card, the main control processing sub-card and the backplane sub-card are interconnected through FPC cables.

[0033] Such as image 3 As shown, among them: 1) The power supply part provides 5V direct current for the system, including AC220V to DC 5V module, and its interface circuit.

[0034] 2) User interface sub-card, including: analog audio input interface, VGA video input interface, local HDMI input interface, slave DVI input interface, audio and video processing unit FPGA circuit, network input / output and its corresponding interface circuit.

[0035] 3) The main control processing sub-card, including the main control processing unit MCU...

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Abstract

The invention discloses a desktop video transmission system based on an FPGA. The desktop video transmission system is composed of the following four parts: a power supply part, a user interface sub-card, a master control processing sub-card and a bottom board sub-card, wherein the power supply part is separately connected with the user interface sub-card, the master control processing sub-card and the bottom board sub-card, and the user interface sub-card, the master control processing sub-card and the bottom board sub-card are interconnected by FPC flat cables; the FPGA is used for carrying out resolution conversion and clock dejitter on a video, and a logic system employing the FPGA to carry out the resolution conversion on the video is mainly composed of an audio / video matrix module, a DDR2 read and write control module, an IIC receiving module, a PLL reconfigurable module, an output display module and a video scaling module. The system disclosed by the invention employs the FPGA to realize the resolution conversion and the clock dejitter design of the video, so as to reduce the delay and guarantee stable transmission of audio stream, and the desktop video transmission system is simple and convenient, low in transmission delay and high in transmission quality of lossless compression images.

Description

technical field [0001] The invention relates to the technical field of video data transmission, in particular to an FPGA-based desktop video transmission system. Background technique [0002] With the development of video conferencing systems, the electronic equipment on the conference table is becoming more and more modern and intelligent. Desktop voice transmission system, speech system, translation system, video tracking system, voice tracking system, paperless office system, etc. [0003] For desktop video transmission systems, most of the products currently on the market are based on video matrix star architecture or wireless projection technology. There are natural defects in the video matrix star architecture, all video sources must first pass through the matrix if they want to be projected or TV. In this way, the layout and video routing of the video matrix are very limited, and its transmission distance is relatively short. The video transmission delay, image los...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/01H04N7/15H04N5/765
CPCH04N7/0105H04N5/765H04N7/0117H04N7/155
Inventor 李敏
Owner 深圳市华威智能科技有限公司
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