High efficiency technique for coding a digital video signal
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United States of America Patent
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-
Oct 27, 1987
Grant Date -
N/A
app pub date -
Dec 17, 1985
filing date -
Dec 19, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In an apparatus for coding digital video data in the form of blocks thereof dynamic range information is generated from maximum and minimum values of the digital video data representing plural picture elements in each block, the minimum value is substracted from each of the digital data to generate modified digital video data, the modified digital video data is encoded with a fixed digitized bit number less than that of the original digital video data, and the encoded data and an additional code for each block are transmitted, with such additional code being formed of at least two of the maximum and minimum values for the respective block and a signal corresponding to the dynamic range information for each block.
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