Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1981-01-15
1983-02-01
Britton, Howard
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358138, 358105, 364515, H04N 712
Patent
active
043718957
ABSTRACT:
A coded video signal transmitting and receiving system comprises in combination a coding apparatus using a plurality of prediction functions and provided for a transmitter, a decoding apparatus provided for a receiver, and a coded signal transmission path, whereby a coded video signal transmitted from the coding apparatus via the transmission path is received at the decoding apparatus and decoded thereby. In the coding apparatus, from a video signal received in time series, two dimensional blocks each consisting of a plurality of picture elements which extend over a plurality of scanning lines are formed, and the video signal is delivered out in a different sequence from that of the input time series. A predictive error value per block with respect to arbitrary one of the plurality of prediction functions associated with each block is generated, and a prediction function to generate a subsequent prediction error value is designated by use of part or all of prediction error values. An optimum prediction function selected from prediction functions is determined after a predetermined time has elapsed to generate prediction signals for picture elements in the two-dimensional block sequentially in accordance with the optimum prediction function. In coding the input video signal, at least a signal representative of the optimum prediction function and the prediction error signal are compressed and transmitted via the transmission path to the decoding apparatus in which the compressed code signal is expanded for decoding.
REFERENCES:
patent: 4133006 (1979-01-01), Iinuma
patent: 4144543 (1979-03-01), Koga
patent: 4215375 (1980-07-01), Usubuchi
patent: 4259693 (1981-03-01), Aaron
IEEE Transactions on Communications, Sep., 1975, "Bandwidth Reduction of Video Signals via Shift Vector Transmission", by F. Giorda et al.
ICC'79, Conference Record, vol. 2, "Interframe Television Coding Using Movement Compensation", by John D. Robbins et al.
Britton Howard
Nippon Electric Co. Ltd.
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