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A long-distance video transmission display device

A technology for video transmission and display equipment, which is applied in the field of long-distance analog video signal transmission and display equipment, and can solve problems such as weak anti-interference ability, short transmission distance, and inability to realize long-distance video transmission and display.

Active Publication Date: 2020-06-30
BEIJING INST OF COMP TECH & APPL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a long-distance video transmission display device, which is used to solve the problem that the traditional analog signal transmission has weak anti-interference ability, short transmission distance, and cannot realize long-distance video transmission and display.

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  • A long-distance video transmission display device

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Embodiment Construction

[0016] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] figure 1 Shown is a block diagram of the long-distance video transmission display device of the present invention, as figure 1 As shown, a long-distance video transmission display device of the present invention includes a TDMS decoding circuit 1, a DVI encoding circuit 2, a high-speed DAC conversion circuit 3, a VGA drive enhancement circuit 4, a DC-DC power module 5, a power conversion chip 6, and an interface protection Circuit 7 , DVI interface protection circuit 8 , VGA interface protection circuit 9 , power protection circuit 10 , HDMI connector 11 , DVI interface connector 12 , VGA interface connector 13 and DC power connector 14 .

[0018] Such as figure 1 As shown, the TDMS decoding circuit 1 is conne...

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Abstract

The present invention discloses a long-distance video transmission and display device. The device comprises: a TDMS decoding circuit, a high-speed DAC conversion circuit, a VGA driving enhancement circuit, an HDMI connector and a VGA interface connector. The HDMI connector is connected with the TDMS decoding circuit, the TDMS decoding circuit is connected with the VGA driving enhancement circuit,and the VGA driving enhancement circuit is connected with the VGA interface connector; HDMI digital video signals are input to a long-distance video transmission and display device through the HDMI connector, and the TDMS decoding circuit is configured to decode and convert the input HDMI digital video signals to TTL signals; the high-speed DAC conversion circuit is configured to encode the TTL signals to generate standard analog video signals which are output to the VGA driving enhancement circuit, the VGA driving enhancement circuit is configured to enhance the analog video signals, and theVGA interface connector is configured to output the analog video signals output by the VGA driving enhancement circuit.

Description

technical field [0001] The invention relates to a video signal processing device, in particular to a long-distance analog video signal transmission display device. Background technique [0002] Existing video signals are transmitted through analog signals. Analog signal transmission has weak anti-interference ability, short transmission distance, blurred picture quality, and high requirements for the medium on which the transmission depends, resulting in high transmission costs. However, in some applications, it is necessary to transmit the analog video signal over a long distance and display the video signal at the remote end for related monitoring and operation. The traditional analog signal video cable is connected to the signal source and the display terminal. The analog signal is attenuated during the transmission process, and the final displayed video picture will be blurred and distorted, or even unable to be displayed. Therefore, how to convert the conventional analo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/765H04N21/4363
CPCH04N5/765H04N21/43635
Inventor 刘博张国利杨松刘更郑赛
Owner BEIJING INST OF COMP TECH & APPL
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