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Encoding/decoding device for TV set for Internet

A technology of codec and encoder, which is applied in the field of Internet protocol television and video program providing systems, and can solve the problems of increased computational complexity

Inactive Publication Date: 2006-11-01
王云川 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0027] (2) H.263 uses half-pixel motion compensation and does not use a loop filter like H.261
[0137] However, it should also be noted that the cost of H.264 / AVC's superior performance is the increase in computational complexity

Method used

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  • Encoding/decoding device for TV set for Internet
  • Encoding/decoding device for TV set for Internet
  • Encoding/decoding device for TV set for Internet

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Embodiment Construction

[0163] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0164] The customization made by the inventor Transcide for H.264 is as follows.

[0165] 1. TransVideo adopts main profile level 3.

[0166] 2. The specific customization of the main profile is as follows:

[0167] (1) Using I and P Slices, fixed I frame or I frame automatic detection;

[0168] (2) Among the two kinds of entropy coding, CAVLC is fast but poor in efficiency, while CABAC is slow but the coding efficiency is 15%-20% higher than CAVLC, and it has a certain fault-tolerant function in the decoding process, so we choose CABAC;

[0169] (3) B Slices are not used, because B frames require two-way motion search, and encoding takes twice as long as P frames, and the decoding complexity is high;

[0170] (4) Interlaced Coding (PicAFF, MBAFF) is not used, and an alternative processing method is adopted, that is, the deinterlace work is ...

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Abstract

A encoding and decoding machine for the Internet TV, including: a encoder that is used to code the TV signal as the H.264AVI signal, and transforms the H.264AVI signal to the ASF signal that is fit for transmission by the IP flow; a decoder that is used to receive the ASF signal by the IP flow and decode the H.264AVI signal, and also transform the decoding signal to the media signal that is fit for display on the TV.

Description

technical field [0001] The present invention relates generally to Internet protocol television and video programming delivery systems, and more particularly, the present invention relates to codecs for Internet television. Background technique [0002] H.264 is the latest international video coding standard, which was officially released in May 2003. This standard is jointly formulated by ITU-T (International Telecommunication Union Telecommunication Standardization Sector) and ISO (International Organization for Standardization), which is responsible for the standardization of communication technology. H.264 is also known as "MPEG4 AVC (Advanced Video Coding)". The data compression rate of H.264 / AVC is more than 2 times that of MPEG2 and more than 1.5 times that of MPEG4. H.264 / AVC not only has a high compression ratio, but also has better support for network transmission. It introduces an encoding mechanism for IP packets, which is beneficial to packet transmission in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24H04N19/00
Inventor 王云川王晓红
Owner 王云川
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