Circuit for removing crosstalk components in a carrier chrominan

Details Circuit for removing crosstalk components in a carrier chrominan Circuit for removing crosstalk components in a carrier chrominan

1990-04-05

1990-11-06

Chin, Tommy P.

Facsimile and static presentation processing

Static presentation processing

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358 40, 358167, 358328, 358329, H04N 521

Patent

active

049690337

ABSTRACT:
In a circuit for removing crosstalk components in a carrier chrominance signal, there are provided a first delay circuit (20), an inverter (21), a first higher-voltage detecting circuit (18), a second delay circuit (22), a second higher-voltage detecting circuit (19), a third higher-voltage detecting circuit (25), a first lower-voltage detecting circuit (23), a second lower-voltage detecting circuit (24), a third lower-voltage detecting circuit (17), and an adder (26) thereby producing a crosstalk-removed carrier chrominance signal. Furthermore, the first delay circuit (20), the inverter (21), and an adder (28) form a comb filter for correcting a time delay due to said circuit for removing crosstalk components in a carrier chrominance signal.

REFERENCES:
patent: 3872498 (1975-03-01), Pritchard
patent: 4839727 (1989-06-01), tanaka
IEEE Transactions On Consumer Electronics, Vol. CE-31, No. 3, Aug. 1985, pp. 240-253, IEEE, New York, U.S.; T. Okada, et al.
"Flicket-Free Non-Interlaced Receiving System", for Standard Color TV Signals:
Wireless World, vol. 89, Dec, 1975, pp. 74-79, Olchester, GB; D. Read: "Improving Colour Television Decoding".

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