Comb filtering for NTSC television signals

Details Comb filtering for NTSC television signals Comb filtering for NTSC television signals

1981-12-02

1984-06-26

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

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H04N 9535

Patent

active

044569211

ABSTRACT:
Method and apparatus for comb filtering NTSC type television signals is described. The television signal is delayed by one line period, the delayed and the undelayed television signal are averaged. The resulting signal is delayed again by one line period and the delayed and the undelayed resulting signals are averaged, too. The result of the second averaging on the one hand is the luminance signal and on the other hand is subtracted by the television signal delayed by one line period. The result of such subtraction is the chrominance signal.

REFERENCES:
patent: 4003079 (1977-01-01), Woo
patent: 4072984 (1978-02-01), Kaiser
patent: 4143396 (1979-06-01), MacKenzie
patent: 4345268 (1982-08-01), Clarke
A CCD Comb Filter for Color TV Receiver Picture Enhancement, Pritchard, RCA Review, vol. 41, Mar. 1980, pp. 3-17.
A Practical Charge-Coupled Device Filter for the Separation of Luminance and Chrominance Signals in a Television Receiver, IEEE Trans. on Cons. Elec., vol. CE-23, No. 3, Aug. 1977, pp. 342-356.

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