Television – Bandwidth reduction system – Data rate reduction
Patent
1992-09-18
1994-06-21
Britton, Howard W.
Television
Bandwidth reduction system
Data rate reduction
375 27, 375 33, H04N 7137
Patent
active
053231880
ABSTRACT:
In a DPCM predictive encoder (or performing DPCM prediction by digitizing a NTSC color television signal with a rate three times of a color sub-carrier frequency, a two-frame predictor which outputs a differential signal over two frames is employed as one of predictors. A predictor switcher adaptively selects one of prediction information as an optimal prediction signal and selects corresponding differential information as an optimal differential signal. This differential signal is quantized by a quantizer. The quantized output and the optimal prediction signal are summed by an adder and supplied to the predictors as a local decoding signal.
REFERENCES:
patent: 4794447 (1988-12-01), Tsinberg
patent: 4833535 (1989-05-01), Ozeki
patent: 5159448 (1992-10-01), Kojima
Kawayachi Noboru
Shibuya Toru
Britton Howard W.
NEC Corporation
LandOfFree
DPCM predictive encoder does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with DPCM predictive encoder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DPCM predictive encoder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2223716