High speed predictive encoding and decoding system for televisio

Details High speed predictive encoding and decoding system for televisio High speed predictive encoding and decoding system for televisio

1978-07-20

1979-11-06

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358260, H04N 712

Patent

active

041737717

ABSTRACT:
A high speed predictive encoding and decoding system for frequency band compression of television video signals has a transmitting unit and a receiving unit coupled by a transmission link for transmitting a video signal produced through a repeated horizontal and vertical scanning of an optical image. The transmitting unit comprises an A/D converter for digitizing said video signal to provide a series of digitized video codewords at the rate of the sampling of said video signal for digitizing; means, including a pair of memory means for temporarily storing two successive segments of said codeword series segment, for interleaving said codewords of one segment with those of an immediately neighboring segment; and means for predictive encoding of the output of said interleaving means, to provide a series of codewords representative of the predictive encoding output alternately of the neighboring segments. The receiving unit comprises means for predictive decoding of the output of said predictive encoding means; means, including a pair of memory means having a capacity equal to that of the memory means at the transmitting unit, for separating the predictive encoding output for one of the segments from that of the other of the segments through a signal processing inverse to that performed at said interleaving means; and means for converting into an analog signal the output of said separating means.

REFERENCES:
patent: 3769451 (1973-10-01), Connor
patent: 3804975 (1974-04-01), Abe
patent: 4093962 (1978-06-01), Ishiguro et al.
patent: 4133006 (1979-01-01), Iinuma
Connor et al. "Intraframe Coding for Picture Transmission."
Haskell et al. "Interframe Coding for Video-Telephone Pictures" Proc. IEEE., vol. 60, No. 7, 7-72, pp.779-799.
Ishiguro et al. "Composite Interframe Coding of NTSC Color T.V. Signals," Comf. Rec., Nat. Tele. Conf.

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