AVS简介PPt

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Outline
Why AVS Standard structure of AVS Standard structure of AVS-Video Technical characteristics of AVS part 2 Technical characteristics of AVS part 7
Lu Yu Dec.13, ISPACS 2005
June 21, 2002
Aug 23-24, 2002 Dec 9, 2002
Dec 19, 2003
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数字时代-中国数字音视频网
Trans./ Quant
Coeff. IQ/IT
Intraframe Prediction Deblock
Entropy Coding
Motion Inter/Intra compensation MV Motion estimationDec.13, ISPACS 2005
Lu Yu
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AVS Video --Framework
MPEG-2 (1992)
More than 10-years old Compression efficiency
4.7GB DVD – 2 hours movie (5.3Mbps) 18GB – 2 hours high definition movie (20Mbps)
MPEG-4 AVC / H.264 (2001-2002)
Lu Yu
Dec.13, ISPACS 2005
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MPEG-2 Video
Control Control Data
Decoder
Trans./ Quant
Coeff. IQ/IT
Entropy Coding 0
Inter/Intra
Motion compensation MV Motion
Lu Yu
Lufrequency Yu Dec.13, ISPACS 2005 spectrum resource 5
High compression efficiency
Short history of AVS
Mar18-21. 2002 June 11, 2002
178th Xiangshan Science Conference, Beijing, “Broad-band Network and Security Stream Media Technology” Science and Technology Department of MII released a bulletin about setting up “Audio Video Coding Standard Workgroup” on China Electronics News “Audio Video Coding Standard Working Group” was set up in Beijing. first meeting of AVS, AVS united with MPEG-China. Website of AVS opened to the members formally. Department of Science and Technology of Ministry of Information Industry issued the notice of Setting up “Audio Video Coding Standard Working Group” and assigned the task of the group On the 7th AVS meeting, AVS-P2 (Video) was finalized.
Local institute and university MNC and foreign companies
Lu Yu
Dec.13, ISPACS 2005
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数字时代-中国数字音视频网
Storage Media
DTV
Streaming
Mobile multimedia
Source coding
Source coding
Source coding
Source coding
AVS
System
Storage Media
Lu Yu
System
S/T/C DTV
System
TCP/IP
Dec.13, ISPACS 2005
AVS1-P2（HD/SD Video- Jizhun Profile） 2003.1 AVS1-P2 （ HD/SD Video- Extension Profile 2005.9 ） 2004.12 AVS1-P3（Audio- 2 Channels） AVS1-P3（Audio- 5.1 Channels） 2005.9 AVS1-P4（Conformance test） AVS1-P5（Reference Software） AVS1-P6（DRM） AVS1-P7（Mobility Video-stage1） AVS1-P7（Mobility Video-stage2） AVS1-P8.1（AVS over IP） AVS1-P8.2（AVS over IP） AVS1-P9.1（System- File Format） AVS1-P9.2（System- File Format） 2005.3 2005.9 2005.3 2005.12 2005.3 2005.3 2004.8
May 25, 2005 June. 8, 2005
Lu Yu
Dec.13, ISPACS 2005
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Standard Structure of AVS
Parts AVS1-P1（System for Broadcasting） 小 组 草 案 工 作 组 草 最 终 草 案 标 准 送 审 国家 标准 (WD) (FCD) (GB) 案(CD) 稿(FD) 2003.1 2003.12 2004.4 2004.8 2003.12 2005.12 2005.3 2005.12 2004.8 2004.4 2006.3 2005.7 2006.3 2005.6 2004.8 2006.9 2005.9 2006.6 2005.9
数字时代-中国数字音视频网
AVS Project and AVS-Video Techniques
Lu Yu
Zhejiang University yul@ Chair of AVS Video
Dec.13, 2005 ISPACS 2005
estimationDec.13, ISPACS 2005
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数字时代-中国数字音视频网
H.264
Control Control Data
Decoder
• High Definition Broadcasting, High Density Storage Media, …
AVS-Part 7
AVS Video Jiben Profile
• Local playback on mobile devices • Limited error resilience tools • Reasonable compression performance and complexity of decoder instead of encoder
Authorization document
Lu Yu
Dec.13, ISPACS 2005
7
AVS members
132 members
(Nov.30,2005)
Local companies Types
Consumer Electronics Communication Computer and Software IC
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数字时代-中国数字音视频网
Standard Structure of AVS-Video
Application Driven
AVS-Part 2
AVS Video Jizhun Profile
AVS Video Enhancement Profile
Might be more than 1 patent pool
Lu Yu
Dec.13, ISPACS 2005
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数字时代-中国数字音视频网
Technical reason – necessity & possibility
System
Wireless
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Patent Pool Policy
Previous Standard
Technical standard followed by patent pool Price subject to licensors only
AVS
Patent pool policy advanced to the standard Price subject to licensors, licensees, and public community One-stop shop
Short history of AVS
Dec 19, 2004 Mar. 2, 2005
On the 7th AVS meeting, AVS-M was finalized. Authentication of „AVS101‟ -- high resolution decoding chip AVS Industry Alliance Joint AVS/ISMA workshop on IPTV standard and Industry Forum