Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1994-09-12
1997-02-25
Tran, Thai Q.
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
358335, 360901, 348403, 348420, 386109, 386112, H04N 979, H04N 576, H04N 712, H04N 1102
Patent
active
056064217
ABSTRACT:
Digital signals representing a video image are variable length encoded and decoded by representing a sequence of orthogonal transformation coefficients with respective group numbers that represent groups of values of zero run lengths or groups of values of effective AC coefficients within the sequence. Huffman code values are assigned for each effective AC coefficient or for each zero run length by referencing a set of Huffman coding tables in which the Huffman code values are stored according to the respective group number and its immediately preceding group number in the sequence. The most frequent group numbers are assigned the shortest length Huffman code values and the least frequent group numbers are assigned the greatest length Huffman code values.
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Shibata Shojiro
Suzuki Takao
Frommer William S.
Sinderbrand Alvin
Sony Corporation
Tran Thai Q.
Vincent David R.
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