)は35.4μW(1.4V、160MHz)となり、FSの約1/11.76、HS-IBOSの約1/2.42に低減できた." />

Presentation 2004/8/12
High-Speed Breaking-off-Search Motion Estimation Algorithm Minimizing Number of Block Matchings and CMOS Absolute Difference Accumulators for MPEG-4 Motion Estimation
Nobuaki Kobayashi, Tomoki Watanabe, Tadayoshi Enomoto,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) To reduce power dissipation of an absolute difference accumulator (ADA) for MPEG-4 motion estimation (ME), a fast ME algorithm called a "Breaking-Off-Search Adaptively minimizing number of block matchings (BOSA)" algorithm was developed. BOSA can improve processing speed of the full-search (FS) method by a factor of more than 11, depending on picture types, while maintaining visual quality of the FS method. At clock frequency of 160 MHz and supply voltage of 1.4V the power dissipation of a 0,18-μm CMOS ADA using BOSA and a gated-clock pulse scheme was reduced to 35.4μW that was about l/11.76 that of the same ADA implementing FS.
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Keyword(in English) MPEG-4 / motion estimation algorithm / CMOS / absolute difference accumulator / power dissipation
Paper # SDM2004-127,ICD2004-69
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Conference Date 2004/8/12(1days)
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Registration To Integrated Circuits and Devices (ICD)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) High-Speed Breaking-off-Search Motion Estimation Algorithm Minimizing Number of Block Matchings and CMOS Absolute Difference Accumulators for MPEG-4 Motion Estimation
Sub Title (in English)
Keyword(1) MPEG-4
Keyword(2) motion estimation algorithm
Keyword(3) CMOS
Keyword(4) absolute difference accumulator
Keyword(5) power dissipation
1st Author's Name Nobuaki Kobayashi
1st Author's Affiliation Graduate School of Science and Engineering, Chuo University()
2nd Author's Name Tomoki Watanabe
2nd Author's Affiliation Graduate School of Science and Engineering, Chuo University
3rd Author's Name Tadayoshi Enomoto
3rd Author's Affiliation Graduate School of Science and Engineering, Chuo University
Date 2004/8/12
Paper # SDM2004-127,ICD2004-69
Volume (vol) vol.104
Number (no) 250
Page pp.pp.-
#Pages 6
Date of Issue