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Digital video signal decoder

A technology for digital video and video signals, applied in the field of decoders, can solve the problem of not being able to decode code streams in different formats, and achieve the effect of reducing the transformation

Inactive Publication Date: 2016-05-18
THE FIRST RES INST OF MIN OF PUBLIC SECURITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the video decoder can only decode one format stream, and cannot decode different format streams separately or at the same time.

Method used

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  • Digital video signal decoder
  • Digital video signal decoder

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Embodiment

[0025] In the digital video signal decoder of the present invention, server mainboard 1 includes memory 3 (hard disk, internal memory), power supply, etc.; network interface 4; CPU 2; 8-way BNC card interface 5; 8-way DP graphics card interface 6 and its transfer interface. After server motherboard 1 is powered on, the operating system begins to run; the application program and 3.1-SVAC decoding unit, 3.2-H.264 decoding unit, 3.3-MPEG-4 decoding unit, and 3.4-decoding adaptive switching unit run in CPU2; CPU2 To receive the network video encoding stream, the application program in CPU2 calls the corresponding decoding operation unit to decode by judging the format of the video stream; the decoded video stream is output and displayed through the BNC card interface 5 or DP interface 6.

[0026] The performance index that the digital video decoder with the dual-output interface of multi-format adaptive decoding using this scheme has is:

[0027] ●Video decoding standards: SVAC, H...

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Abstract

The invention discloses a digital video signal decoder which comprises a server mainboard, and a CPU, a memory, a network interface and a video signal output interface arranged on the mainboard, wherein the memory is provided with an SVAC decoding unit, an H.264 decoding unit, an MPEG-4 decoding unit and a decoding adaptive switching unit, and the video signal output interface port comprises eight BNC interfaces and eight DP interfaces. The digital video signal decoder improves a common digital signal decoder, obtains flow format information by parsing video stream, and adds a decoding engine to carry out adaptive decoding SVAC, H.264 and MPEG-4 formats. Two video output interfaces are added, and adapting a plurality of adaptor ports is allowed to access a central TV wall with different interfaces. The decoding operation unit is optimized, so that real-time decoding outputs increases to eight 1080Ps.

Description

technical field [0001] The invention relates to the technical field of decoders, in particular to a digital video decoder. Background technique [0002] Existing video signal decoders generally can only decode one of the code streams in SVAC, H.264 and MPEG-4 compression encoding formats, or can only be configured to select one to take effect. When the code stream format changes, it needs to be reconfigured to select codec format. The interface of ordinary decoders is generally one of DVI, HDMI or BNC. [0003] With the promulgation, implementation and application promotion of the SVAC standard (a recommended national standard GB / T25724-2010 "Technical Requirements for Digital Video and Audio Codec for Security Monitoring and Monitoring" jointly formulated by the Ministry of Public Security and the Ministry of Industry and Information Technology), the security monitoring market will continue to grow. There are situations where three video coding formats, SVAC, H.264 and MP...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/44H04N7/18
Inventor 郅晨董骞欧阳甸张伟华闫雪匡艳裴静王冰洋郝贵青邢培银王晓东
Owner THE FIRST RES INST OF MIN OF PUBLIC SECURITY
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