Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1980-05-15
1981-11-24
Martin, John C.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358169, H04N 514
Patent
active
043027776
ABSTRACT:
A flare or scattered light compensation circuit for television, wherein a controllable signal difference amplifier is present to a first input of which a picture signal, affected by flare or scattered light, is applied, a compensation signal obtained by signal integration being applied to a second input. The gain factor of the amplifier is controlled substantially proportional to the quotient of the peak-peak value of the picture signal and of the difference value of the said peak-peak value and the value of the compensation signal.
REFERENCES:
patent: 3621132 (1971-11-01), Page
patent: 4001502 (1977-01-01), Van Roessel
Kemner Rudolf
Kuilman Bernardus G. J.
Smit Hilbrand J.
Briody Thomas A.
Goodman Edward W.
Martin John C.
Streeter William J.
U.S. Philips Corporation
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