Control signal generator for a television system

Details Control signal generator for a television system Control signal generator for a television system

1989-08-25

1990-12-25

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358168, 358169, 358174, H04N 557, H04N 964

Patent

active

049807560

ABSTRACT:
In a color television system, the color signals produced by a luma-chroma IC are summed to produce a signal representative of processed luminance information not otherwise readily available. Pulses of the summed signal corresponding to retrace blanking pulses contained in the color signals, are stripped away in order to reduce errors when attributes of the summed signal are determined, e.g., by an average detector. The detector provides a control signal for modification of a luminance signal, such as by "white stretch".

REFERENCES:
patent: 4110787 (1978-08-01), Parker
patent: 4167750 (1979-09-01), Tomimoto et al.
patent: 4553157 (1985-11-01), Hurst, Jr. et al.
patent: 4599643 (1986-07-01), Hartlan
VALVO Entwicklungsmitteilungen 77, 1980 of a "Complete Pal Decoder with integrated circuit TDA3560".

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