A video transmission system and method
A video transmission and video technology, applied in the field of video transmission, can solve the problems of consistent original image, reduced data transmission rate, and difficulty at the receiving end.
Active Publication Date: 2019-11-19
NOREL SYST
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Problems solved by technology
[0004] The existing technology usually compresses the original video data at the video sending end, so that the data transmission rate is greatly reduced, so that it is suitable for long-distance transmission through cables, and the video receiving end decompresses the received video and restores the original Video format and video data, in this process, the video sender usually handles the problem of video synchronization by adding a frame header flag, but because of the delay in compression, and because the compressed transmission rate is lower than the original image rate, in the video It is difficult for the time interval and time point of frame header insertion to be consistent with the original image at a small transmission rate after compression, making it difficult or impossible for the receiving end to restore the timing of the input video by detecting the frame header flag. In summary At present, there is a lack of a video transmission method that compresses the input video data at the sending end, and at the same time restores the original video at the receiving end and can accurately restore the timing of the input video
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[0048] A video transmission system and method of the present invention will be further described below in conjunction with the embodiments in the accompanying drawings.
[0049] Such as figure 1 and figure 2 Shown is an embodiment of a video transmission system of the present invention. In this embodiment, the video transmission system includes a video sending device 1 and a video receiving device 2. The video sending device 1 is connected to a video source device 3, and the video receiving device 2 Connected to the video receiving device 4, the video sending device 1 receives the input reference clock 31 and the input video data 32 sent by the video source device 3, generates serial data 51 and sends it to the video receiving device 2, and the video receiving device 2 receives the serial data 51 and generate output reference clock 41 and output video data 42 sent to video receiving device 4.
[0050] The video sending device 1 includes a clock phase-locked loop module 101 ...
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The invention discloses a video transmission system and method. Video source equipment sends video data to video receiving equipment through a video sending device and a video receiving device; the video sending device receives an input reference clock and input video data sent from the video source equipment, produces serial data and sends the same to the video receiving device; the video receiving device receives the serial data and produces an output reference clock and output video data sent to the video receiving equipment; the video sending device detects the video format information ofeach frame in the input video data in real time, and mixes the video format information with the compressed video data; the video receiving device analyzes the video format information and decompresses the video data, and each frame time length in the output video data is equal to the time length of the corresponding frame of the input video data.
Description
technical field [0001] The present invention relates to the technical field of video transmission, in particular to a video transmission system and method. Background technique [0002] At present, video transmission technology is divided into wireless transmission and wired transmission according to the signal transmission method. Wireless transmission uses radio waves to transmit video data, and wired transmission uses cables to transmit video data. Since the medium of wireless transmission is electromagnetic waves, in actual transmission It is easy to be restricted by many conditions, and wired transmission not only has stable transmission, strong anti-interference ability, but also has high security and relatively fast transmission rate, so it has been adopted on a large scale. In addition, video transmission interfaces include serial video interfaces Common serial video interfaces include HD-SDI, HDMI, DisplayPort, MIPI, and LVDS, and common parallel video interfaces in...
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IPC IPC(8): H04N19/46H04N19/42
CPCH04N19/42H04N19/46
Inventor 王元龙陈淼
Owner NOREL SYST