Television – Bandwidth reduction system – Data rate reduction
Patent
1992-07-27
1994-07-19
Britton, Howard W.
Television
Bandwidth reduction system
Data rate reduction
348407, 348417, 348419, 348423, 348585, 348598, H04N 7137
Patent
active
053313488
ABSTRACT:
An improved predictive encoder where the leak signal is a function of the buffer fullness of the encoder. More specifically, the signals stored in the encoder output buffer are further encoded based on the fullness of the buffer, and information about this further encoding is used in determining the leak factor level. In accordance with another improvement, this leak factor level is not constrained to granularity that is imposed by the decoder hardware. Removal of the constraint is accomplished by cycling through a sequence of permissible leak levels that averages at the desired level.
REFERENCES:
patent: 5134475 (1990-12-01), Johnston et al.
patent: 5134477 (1992-07-01), Knauer
patent: 5164963 (1992-11-01), Lawrence
patent: 5243419 (1993-09-01), Faryar
Knauer Scott C.
Matthews Kim N.
Netravali Arun N.
Petajan Eric D.
Safranek Robert J.
AT&T Bell Laboratories
Brendzel Henry T.
Britton Howard W.
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