Picture data encoding method
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United States of America Patent
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Nov 26, 1996
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N/A
app pub date -
Sep 8, 1994
filing date -
Mar 11, 1992
priority date (Note) -
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Abstract
When transformed and quantized blocks of picture data are encoded, a block being constituted by a matrix of coefficients, the events within each block to be encoded comprise firstly a run indicating the number of zero-coefficients in the clock between a current non-zero coefficient and the previous non-zero coefficient, and secondly, the size of the current non-zero coefficient of the block. Each event is, in accordance with the invention, completed by adding a third parameter which indicates whether the current non-zero coefficient is the last non-zero coefficient of the block. Hence, each event is represented as a three-dimensional quantity.
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