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HDMI (High Definition Multimedia Interface) signal delayer and usage method

A signal and extender technology, which is applied in the direction of instruments, image communication, static indicators, etc., can solve the problems of difficult video synchronous playback, tediousness, waste, etc., and achieve the effect of solving the problem of signal asynchrony and reducing costs

Pending Publication Date: 2019-03-29
北京中电慧视科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many ways to achieve synchronous display of multiple devices. Multiple signal sources can be used to drive display devices one-to-one. However, this method is difficult to achieve synchronous video playback, and requires the use of multiple signal sources, which is cumbersome and wasteful.
Another method is to convert the HDMI video signal into a network signal for streaming media playback. Since the HDMI signal is a high-definition signal, direct conversion to a network signal has high requirements for network bandwidth and high cost. If it is compressed first and then If it is converted to a network signal, the video effect will be worse, and the video encoding and decoding process in the network transmission will cause the problem that it is difficult to achieve synchronous display

Method used

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  • HDMI (High Definition Multimedia Interface) signal delayer and usage method
  • HDMI (High Definition Multimedia Interface) signal delayer and usage method

Examples

Experimental program
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Effect test

Embodiment 1

[0017] HDMI signal delayer

[0018] like figure 1 As shown, the HDMI signal delayer includes an HDMI signal input terminal DB9-1, an HDMI signal output terminal DB9-2, an HDMI signal distribution unit, and an LCD drive unit. The first signal output terminal of the HDMI signal distribution unit is connected to the LCD drive unit. The second signal output terminal of the signal distribution unit is connected to the HDMI signal output terminal DB9-2; the signal input terminal of the HDMI signal distribution unit is connected to the HDMI signal input terminal DB9-1. The HDMI signal distribution unit solves the signal cascading problem, not only can transmit the HDMI signal to the display device, but also can transmit the signal to the next level. The LCD drive unit can convert HDMI signals into LVDS signals, and connect to display devices through LVDS interfaces, which solves the problem of high-definition audio and video simultaneous transmission without HDMI interfaces on the d...

Embodiment 2

[0022] Manufacturing method of HDMI signal delayer

[0023] It includes multiple HDMI signal extenders mentioned above, and each HDMI signal extender is connected step by step. like figure 2 As shown, the HDMI signal input terminal of the current HDMI signal extender is connected to the HDMI signal output terminal of the previous HDMI signal extender, and the HDMI signal output terminal of the current HDMI signal extender is connected to the HDMI signal of the next HDMI signal extender input terminal.

[0024] In each HDMI signal extender, the HDMI signal is input to the HDMI signal distribution unit through the HDMI signal input terminal, and the first HDMI signal output by the HDMI signal distribution unit is converted into an LVDS signal by the LCD drive unit, and the LVDS signal is provided to the display The unit displays; the second HDMI signal output by the HDMI signal distribution unit is output to the next-level HDMI signal extender through the HDMI signal output t...

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Abstract

The invention relates to an HDMI (High Definition Multimedia Interface) signal delayer and a usage method. The HDMI signal delayer comprises an HDMI signal input terminal, an HDMI signal output terminal, an HDMI signal distribution unit, and an LCD driving unit; a first signal output end of the HDMI signal distribution unit is connected with the LCD driving unit, and a second signal output end ofthe HDMI signal distribution unit is connected with the HDMI signal output terminal; a signal input end of the HDMI signal distribution unit is connected with the HDMI signal input terminal; each HDMIsignal delayer is connected in a level-by-level mode; an HDMI signal input terminal of a current-level HDMI signal delayer is connected with an HDMI signal output terminal of a previous-level HDMI signal delayer; and an HDMI signal output terminal of the current-level HDMI signal delayer is connected with an HDMI signal input terminal of a next-level HDMI signal delayer. According to the HDMI signal delayer invention provided by the invention, long-distance transmission of HDMI signals can be realized, and multiple display equipment can be driven through a single signal source.

Description

technical field [0001] The invention relates to an HDMI signal delayer and a use method thereof. Background technique [0002] HDMI, High Definition Multimedia Interface (High Definition Multimedia Interface) is a fully digital image and sound transmission interface, which can transmit uncompressed audio signals and video signals. It is precisely because of the multiple advantages of this multimedia interface that more and more devices use this interface. At present, most HDMI interface applications are point-to-point connections between signal sources and display devices. When multiple devices are required to display the same video content synchronously, it has certain limitations. At present, there are many ways to achieve synchronous display of multiple devices. Multiple signal sources can be used to drive display devices one-to-one. However, this method is difficult to achieve synchronous video playback, and requires the use of multiple signal sources, which is cumberso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/765H04N5/268G09G3/36
CPCH04N5/268H04N5/765G09G3/36
Inventor 陈爱斌范光强郭宇王鑫鹏郑典勇
Owner 北京中电慧视科技有限公司