Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1990-01-29
1991-07-30
Shepperd, John W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358142, H04N 712
Patent
active
050363921
ABSTRACT:
In a method of encoding a television signal in accordance with a plurality of operations each providing another distribution of temporal and/or spatial distribution, at least one of said operations including estimation of motion vectors for first frames out of pairs of television frames and/or estimation of pointers to motion vectors for second frames out of said pairs of television frames, said method further comprising encoding a digitally assisting signal into binary codewords comprising informations about said motion vectors, said pointers and/or according to which one of said plurality of operations the television signal is encoded, a Hamming-distance between a first codeword indicating an operation providing a maximum spatial resolution, and a second codeword indicating an operation providing a maximum temporal resolution, is at least one half the number of bits of each codeword, so that a fail-safe and efficient method is obtained.
REFERENCES:
patent: 4661849 (1987-04-01), Hinman
patent: 4727422 (1988-02-01), Hinman
patent: 4901149 (1990-02-01), Fernando et al.
patent: 4931855 (1990-06-01), Salvadorini
patent: 4937668 (1990-06-01), Hosaka
"HDTV Motion Adaptive Bandwidth Reduction Using DATV"; by Storey et al; BBC Research Department, 1986; pp. 1-7.
Marion Michael E.
Shepperd John W.
U.S. Philips Corporation
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