A low-speed signal photoelectric conversion module for general-purpose multimedia interfaces
A technology of photoelectric conversion module and multimedia interface, applied in image communication, duplex signal operation, TV system adapted to optical transmission, etc. Sexual, cost-saving effect
Active Publication Date: 2018-12-11
EVERPRO TECH COMPANY
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Problems solved by technology
While increasing cost and power consumption, it also has a great impact on product yield
[0004] Optical signals can be used to transmit high-speed signals very well, but when transmitting low-speed signals or when there is no signal input, the receiving end will output noise, and the amplifier of the photoelectric chip can easily amplify the noise to the amplitude of the normal signal and cause bit errors
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Embodiment 1
[0069] In this example, combined with the Figure 4 , further illustrating the use of the general multimedia interface low-speed signal photoelectric conversion module of the present invention to simultaneously transmit multiple multimedia interface signals through optical communication.
[0070] In this figure, two universal multimedia interface low-speed signal photoelectric conversion modules A and B are respectively included to transmit HDMI, DP, and self-defined low-speed control signals between the source and the sink.
[0071] Each multimedia interface low-speed signal photoelectric conversion module includes a protocol analysis module, a packet coding module, an unpacking decoding module, an electro-optical conversion module and a photoelectric conversion module.
[0072] The source device sends multiple multimedia interface HDMI, DP and user-defined low-speed control signals to the sink device to the multimedia interface low-speed signal photoelectric conversion modul...
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The invention relates to a low-speed signal photoelectric conversion module of a general multimedia interface, comprising: a protocol analysis module, which is used for analyzing the direction of a half-duplex signal and converting into a full-duplex signal; a packaging coding module, which is used for packaging the received full-duplex signal in the form of frame and sending the same to the electro-optical conversion module; an electro-optical conversion module configured to convert an electrical signal into an optical signal for transmission through an optical fiber; an unpacking and decoding module used for unpacking and decoding the received high-speed electric signal and sending the full-duplex signal after protocol analysis to the protocol analysis module for protocol analysis again;and an photoelectric conversion module configured to receive an optical signal transmitted through an optical fiber, convert the optical signal into an electrical signal, and send the optical signalto the unpacking and decoding module. The invention can transmit the control signal at any time, and improves the real-time property of the control signal transmission. A plurality of control signalsin a plurality of multimedia interfaces received at the same time can be simultaneously transmitted, thereby saving cost.
Description
technical field [0001] The present invention relates to a multimedia interface, in particular to a low-speed signal photoelectric conversion module for a general multimedia interface, which can convert low-speed signals used by multiple multimedia transmission lines into high-speed signals suitable for optical fiber transmission, and only needs two differential pairs. Realize the sending and receiving of all multimedia interface control signals, thereby reducing cost and power consumption. Background technique [0002] With people's ever-increasing needs for a better life, digital high-definition technology has developed rapidly, and various ultra-high-definition audio and video equipment have been continuously launched. At the same time, a variety of multimedia interfaces suitable for high-definition audio and video transmission, such as HDMI and DP, have emerged. The amount of information data of control signals transmitted by various multimedia interfaces is increasing. ...
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IPC IPC(8): H04N5/268H04N5/765H04N7/22
CPCH04N5/268H04N5/765H04N7/22H04B10/40H04L5/14H04B10/2589H04B10/50H04B10/60H04B10/66
Inventor 李彦秦瑞程煜烽江辉汤金宽
Owner EVERPRO TECH COMPANY