Apparatus and method for reducing line flicker in a television p

Details Apparatus and method for reducing line flicker in a television p Apparatus and method for reducing line flicker in a television p

1991-03-01

1992-09-08

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 11, 358140, H04N 521

Patent

active

051463296

ABSTRACT:
Line flicker is detected by comparing luminance values provided by a video signal in vertically successive lines of two temporally successive fields. If there is a step change in adjacent lines, indicative of line flicker, the line flicker is corrected by adaptively delaying or accelerating corresponding lines within the field that experienced the step change.

REFERENCES:
patent: 4300162 (1981-11-01), Roberts
patent: 4680632 (1987-07-01), Willis et al.
patent: 4740842 (1988-04-01), Annegarn et al.
patent: 4947251 (1991-08-01), Hentschel
Scanning Modes for Flicker-Free Colour TV-Reproduction; H. Schroder, et al., IEEE Transactions on Consumer Electronics, vol. CE-34, No. 4, Nov. 1985.
Flimmerreduktionsverfahren zur Verbesserung der Fernseh-Bildwiedergabe; Ch. Hentschel; ntzArchiv Bd. 7, H. 9; 1985; pp. 219-229.
Vermeidung des Grossflachenflimmerns in Fernseh-Heimempfangern; Von Uwe E. Kraus; Rundfunktech Mitteilungen; Jarg. 25; 1981; pp. 264-269.

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