3G-SDI digital video frame synchronization system

A 3G-SDI, 1.3G-SDI technology, applied in the field of video and audio, can solve problems such as distortion, unstable superposition of station logos, and out-of-synch

Inactive Publication Date: 2010-06-30
大连科迪视频技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can correct the time base error or jitter caused by different signal sources or different transmission paths at a signal transmission rate of 3Gbps, providing a more accurate and convenient way to solve video image switching jitter, distortion, asynchronous, and station logo overlap Plus instability and other issues

Method used

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  • 3G-SDI digital video frame synchronization system
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  • 3G-SDI digital video frame synchronization system

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Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but is not limited to the embodiments.

[0018] Such as figure 1 As shown, the 3G-SDI digital video frame synchronization system includes a sync separator 1, a clock generator 2, a frame memory 3, an indication and control unit 5, a serializer 6, a deserializer 7, a power supply 8, and a system processing core FPGA chip 4. Synchronous separator 1 is connected with FPGA chip 4 and clock generator 2 , frame memory 3 , instruction and control unit 5 , serializer 6 , deserializer 7 and power supply 8 are connected with FPGA chip 4 .

[0019] The following is based on figure 1 , to give a concrete explanation of how the system works:

[0020] First of all, the digital video signal is converted into multi-bit parallel data through the equalizer and deserializer 7 and input to the FPGA chip 4, and the FPGA chip 4 performs synchronous separation pro...

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Abstract

The invention relates to a 3G-SDI digital video frame synchronization system comprising a synchronous separator (1), a clock generator (2), a frame storage (3), an FPGA chip (4), an indication and control unit (5), a serializer (6), a deserializer (7) and a power supply (8), wherein the synchronous separator (1) is connected with the FPGA chip (4) and the clock generator (2); and the frame storage (3), the indication and control unit (5), the serializer (6), the deserializer (7) and the power supply (8) are connected with the FPGA chip (4). The 3G-SDI digital video frame synchronization system overcomes the defect of time base errors or jitter caused by different signal sources or transmission paths at the signal transmission speed of 3 Gbps, and solves the problems of switching jitter, distortion, desynchronization, unstable station caption superposition, and the like of video images in a more precise and convenient way.

Description

technical field [0001] The invention belongs to the field of video and audio technology in the field of electronic information, and relates to a digital video frame synchronization system. Background technique [0002] 3G-SDI (Serial Digital Interface with 3Gbps transmission rate) video signal is the mainstream top-level signal format in the radio and television and media communication industry at present and in the next few years. professional or recreational needs. At the same time, the transmission standard of 3G-SDI signal is much higher than that of HD-SDI (High Definition Serial Digital Interface) signal and SD-SDI (Standard Definition Serial Digital Interface) signal. The transmission rate is 2.97Gbps, which is twice the transmission rate in the HD-SDI signal channel and 11 times the transmission rate in the SD-SDI signal channel. Due to the high frequency of the signal, the jitter generated by the 3G-SDI video signal is more difficult to control, and the synchroniz...

Claims

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Application Information

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IPC IPC(8): H04N5/08H04N7/015
Inventor 周春雷刘兴华
Owner 大连科迪视频技术有限公司
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