An adaptive DPCM encoder for NTSC composite video signals
Abstract
An adaptive DPCM algorithm is proposed for encoding digitized National Television Systems Committee (NTSC) color video signals. This algorithm essentially predicts picture contours in the composite signal without resorting to component separation. Preliminary subjective and objective tests performed on an experimental encoder/simulator indicate that high quality color pictures can be encoded at 4.0 bits/pel or 42.95 Mbit/s. This requires the use of a 4/8 bit dual-word-length coder and buffer memory. Such a system might be useful in certain short hop applications if both large-signal and small-signal responses can be preserved.
- Publication:
-
NTC 1981; National Telecommunications Conference, Volume 2
- Pub Date:
- 1981
- Bibcode:
- 1981ntc.....2....9C
- Keywords:
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- Color Television;
- Differential Pulse Code Modulation;
- Satellite Television;
- Signal Encoding;
- Television Transmission;
- Video Communication;
- Adaptive Control;
- Coders;
- Digital Systems;
- Microwave Transmission;
- Satellite Transmission;
- Signal Processing;
- Communications and Radar