Signal encoding and decoding system and method

  • US 6,680,975 B1
  • Filed: 11/02/2000
  • Issued: 01/20/2004
  • Est. Priority Date: 02/29/1992
  • Status: Expired due to Fees
First Claim
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1. A video signal compression system, comprising:

  • a scanner which is operative to simultaneously scan a set of video spatial frequency coefficients of an individual sub-block according to a plurality of different scanning patterns to produce a plurality of sets of reordered coefficients;

    a scanning pattern selector operative to select from the plurality of sets of reordered coefficients a set of reordered coefficients which produces the most efficient coding according to a predetermined criterion and to produce a pattern signal indicating the scanning pattern corresponding to the selected set of reordered coefficients; and

    an entropy coder operative to entropy encode the selected set of reordered coefficients and output an entropy encoded signal.

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