US Patent No: 5,136,371

Number of patents in Portfolio can not be more than 2000

Digital image coding using random scanning

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Abstract

In a video signal coder blocks of pixels are generated, scanned in a pseudo-random order and transformed blocks of coefficients which are stored in a buffer. The resulting blocks of coefficients are quantized individually by the use of a quantization level and the coefficients of each block are individually quantized by the use of a quantization matrix. The quantization level is determined by the fullness of the buffer.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
THOMSON CONSUMER ELECTRONICS, INC.INDIANAPOLIS, IN712

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Delpuch, Alain Les Essarts, FR 45 1194
Savatier, Tristan San Francisco, CA 8 514

Cited Art

Patent Info (Count) # Cites Year
 
SIEMENS AKTIENGESELLSCHAFT (3)
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4,785,349 Digital video decompression system 220 1987
 
TELEVISION ANALOG COMPRESSION CORPORATION (1)
4,375,650 System for processing video signals 83 1981

Patent Citation Ranking

Forward Cites

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