Carrier chrominance signal processing circuit

Details Carrier chrominance signal processing circuit Carrier chrominance signal processing circuit

1988-09-01

1990-12-18

Chin, Tommy P.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 968

Patent

active

049790250

ABSTRACT:
A carrier chrominance signal processing circuit comprises first through fourth circuits. The first circuit detects an edge of color in an input carrier chrominance signal. The second circuit holds color information on the carrier chrominance signal in a vicinity of the edge of color. The third circuit produces a control signal having a predeterined pulse width in response to the detected edge of color. The fourth circuit selects a held color information when the control signal is produced, and selects the carrier chrominance signal when no control signal is produced, so that a steepened carrier chrominance signal is outputted from the fourth circuit.

REFERENCES:
patent: 4723175 (1988-02-01), Ichinoi
patent: 4729014 (1988-03-01), Flamm
patent: 4766486 (1988-08-01), Ozaki
"Picture Signal Improvement in Colour TV Receivers" by H. Harlos, IEEE Trans. on Consumer Electronics, vol. CE-31, No. 3, 156-162, Aug., 1985.

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