Video signal encoding apparatus
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United States of America Patent
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Aug 9, 1994
Issued Date -
N/A
app pub date -
Mar 9, 1993
filing date -
Jan 17, 1991
priority date (Note) -
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Abstract
A video signal encoding apparatus in which the number of quantization bits used in a quantizing circuit is determined on the basis of the activity index of each video block and the length of coded data or alternatively on the basis of the activity index of each video block and the number of events (each event consisting of the zero run length and nonzero value of quantized data). The video signal is encoded in a compressed form after shuffling the video blocks in such a manner that, when attention is given to any given video block, its four neighboring video blocks belong to units different from the unit to which the attention video block belong. Compression encoding of the video blocks is performed in sequence starting with the center of the screen and then proceeding toward the sides of the screen.
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