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Long-distance nondestructive fiber transmission device of high-definition multimedia interface

A multimedia interface, high-definition technology, used in TV systems adapted to optical transmission, cable transmission adaptation, TV and other directions, can solve the problems of poor output signal, easy to be interfered, blurred image, etc., to achieve volume and weight reduction, The effect of convenient cable connection and cost reduction

Inactive Publication Date: 2010-04-07
WUHAN CHANGLIAN OPTO ELECTRONICS SCI & TECH
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

HDMI copper cables are widely used at present, but when using ordinary HDMI cables for long-distance transmission, there will always be poor output signals, which are easily disturbed, and the displayed images will appear blurred, trailing, and color separation.

Method used

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  • Long-distance nondestructive fiber transmission device of high-definition multimedia interface
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  • Long-distance nondestructive fiber transmission device of high-definition multimedia interface

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Embodiment Construction

[0018] The present invention will be further described in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, the present invention is made up of sending module (TX), receiving module (RX) and 5 optical fibers, and sending module (TX) is connected with receiving module (RX) respectively by 5 optical fibers, and sending module (TX) is made up of 4 road electro-optical (E / O) conversion circuit and a photoelectric (O / E) conversion circuit for displaying the data channel (DDC) control signal, a power supply module, and a logic control module. The power supply module provides power for the sending module, and the logic control module controls the reading DDC signal; the receiving module (RX) is composed of 4 O / E conversion circuits and 1 E / O conversion circuit for DDC control signals, a power supply module, and a logic control module. The power supply module provides power for the receiving module, and the logic control module controls the reading Take ...

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Abstract

The invention relates to a long-distance nondestructive fiber transmission device of a high-definition multimedia interface (HDMI), which consists of a transmitting module, a receiving module and five fibers. The transmitting module is connected with the receiving module through the five fibers, the transmitting module is connected with a display source by cables, and the receiving module is connected with a display terminal by cables, wherein three fibers transmit a high-speed video / audio signal of a transition minimized differential signaling (TMDS), one fiber transmits a clock signal and one fiber transmits a DDC control signal. In the invention, the realization principle is as follows: four paths of optical signals transmit a high-definition signal, one path of optical signal transmits a display data channel signal read from the display terminal, and transmits back to the display source terminal, thereby completely replacing the copper cables in the cables with five fibers. The HDMI of the invention is transmitted by the five fibers, and has the advantages of high bandwidth, longer transmission distance, low cost and the like.

Description

technical field [0001] The invention relates to a high-definition multimedia connection cable in consumer electronics, in particular to a high-definition multimedia interface (HDMI) long-distance lossless optical fiber transmission device. Background technique [0002] HDMI (High-Definition Multimedia Interface), also known as high-definition multimedia interface, is the first to support transmission on a single cable, uncompressed full digital high-definition, multi-channel audio and intelligent format and control command data digital interface. The HDMI interface was initiated by Silicon Image and jointly developed by a working group jointly established by eight well-known consumer electronics manufacturers including Sony, Hitachi, Panasonic, Philips, Thomson, and Toshiba. The current highest version is the HDMI1.3 specification released in June this year. HDMI can not only meet the current highest resolution of 1080P, but also support the most advanced digital audio for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/22H04N5/765
Inventor 曹祥东刘海余冰
Owner WUHAN CHANGLIAN OPTO ELECTRONICS SCI & TECH
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