Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1976-02-02
1977-03-29
Martin, John C.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 19, 331 20, 331 28, H04N 944
Patent
active
040152871
ABSTRACT:
Switching the time constant of a filter in the APC-loop of a color television receiver is done by a keyed transistor switch so that the circuit is suitable to be formed as an integrated circuit.
REFERENCES:
patent: 2841642 (1958-07-01), Richman
patent: 2956112 (1960-10-01), O'Toole
patent: 3624296 (1971-11-01), Slavik et al.
patent: 3781701 (1973-12-01), Cecchin et al.
Martin John C.
Psitos Aristotelis M.
Steckler Henry I.
Trifari Frank R.
U.S. Philips Corporation
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