Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1986-02-12
1988-04-26
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358105, 358140, 358167, H04N 701, H04N 521, H04N 718
Patent
active
047408421
ABSTRACT:
A movement-adaptive processing circuit for an interlaced video signal has a selection circuit (5) which passes on to its output (21) one of the three video signals applied to its inputs (3, 9, 11) and which signals substantially correspond to three position-sequential lines of two consecutive fields when this signal has an amplitude which is closest to the mean amplitude of these three video signals. The processing circuit may be used many types of circuits such as, for example, in line or field number conversion circuits, noise suppression circuits, DPCM decoding circuits, vertical contour correction circuits and still-picture display circuits of video record players.
REFERENCES:
patent: 4546386 (1985-10-01), Matsumoto et al.
patent: 4663665 (1987-05-01), Tanaka et al.
Annegarn Marcellinus J. J. C.
Doyle Terence
Frencken Peter H.
Van Hees Dirk A.
Britton Howard W.
Gadson Gregory P.
Kostak Victor R.
U.S. Philips Corporation
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