Television – Bandwidth reduction system – Data rate reduction
Patent
1994-09-28
1997-01-28
Britton, Howard W.
Television
Bandwidth reduction system
Data rate reduction
348421, 348424, H04N 746
Patent
active
055982140
ABSTRACT:
In a hierarchical encoding apparatus, predictors each including a look-up table are used to form predicted signals for respective hierarchical levels. The difference between the predicted signal and the original signal forms the differential signal for the higher hierarchical levels. The look-up table contains either predictive coefficients which are used as weights for pixels of a signal in one hierarchical level to produce a signal at a higher hierarchical level, or representative values which are combined with a dynamic range and redundant component in a set of pixels of a signal in one hierarchical level to produce a signal at a higher hierarchical level. The values in the look-up table are obtained from representative images.
REFERENCES:
patent: 4864396 (1989-09-01), Martens
patent: 5305103 (1994-04-01), Golin
patent: 5331414 (1994-07-01), Golin
Fujimori Yasuhiro
Kondo Tetsujiro
Nishikata Takeharu
Britton Howard W.
Frommer William S.
Sinderbrand Alvin
Sony Corporation
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