Remote transmission system for ultra-high-definition video signals

Abstract

The invention provides a remote transmission system for ultra-high-definition video signals. The remote transmission system comprises a signal source interface end, a single optical fiber and a display interface end. A second optical signal transmitted by the display interface end is separated from the optical fiber by the signal source interface end and is converted into a second serial signal, EDID (extended display identification data) information is obtained by deserializing, a plurality of first serial signals are obtained by decoding and serial conversion according to a display resolution ratio output video signal and are respectively converted into first optical signals, the first optical signals are transmitted to the display interface end through the optical fiber after wavelength division multiplexing, the EDID information is converted into a second serial signal by the display interface end, converted into the second optical signal and transmitted to the signal source interface end through the optical fiber, the first optical signals are separated from the optical fiber, and the video signals are obtained by deserializing and coding after the first optical signals are converted into a plurality of first serial signals. The ultra-high-definition video signals can be bidirectionally transmitted by the single optical fiber, and the remote transmission system is high in reliability and low in cost, and supports a display end to display with the best resolution ratio.

Description

technical field [0001] The invention relates to the field of video transmission, in particular to a remote transmission system for ultra-high-definition video signals. Background technique [0002] In recent years, the production, transmission and playback of ultra-high-definition video signals (over 1080p) have become an inevitable trend in the development of video in the world today. With the development of technology, people have higher and higher requirements for video quality and longer distances for video transmission. However, due to the characteristics of large data volume and high transmission rate of ultra-high-definition video signals, the shortcomings of short transmission distance hinder its development. [0003] At present, the signal interfaces of ultra-high-definition resolution video signals are mainly DVI and HDMI, and the transmission medium is a balanced cable, such as a twisted pair. However, due to the large amount of data and high transmission rate o...

AI Technical Summary

Problems solved by technology

However, due to the large amount of data and high transmission rate of ultra-high-definition resolution video signals, the signal attenuation is serious when using a balanced cable. The transmission distance is generally about 5 meters, and the equalizer can only support up to 45 meters.

And need to use high-quality cables, the cost is high, and the wiring is inconvenient

[0004] Other remote transmission methods also convert DVI or HDMI signals into 4 optical signals through simple photoelectric conversion of TMDS (transmission minimized differential) signals, and transmit them through 4 optical fibers, which makes field wiring difficult and the signal TMDS signal is extended. , easy to cause clock skew and high cost

Moreover, this method is one-way transmission, the signal source cannot read the EDID of the display, and cannot display at the best resolution

Images