Composite video signal generator

Details Composite video signal generator Composite video signal generator

1991-11-27

1993-01-19

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 22, H04N 900

Patent

active

051810999

ABSTRACT:
Disclosed is a composite video generator comprising a color signal generating means, a color selecting means and an output means, and further being provided with a color change detecting means and a low amplitude color signal generating means. The composite video signal generator which combines a composite video input signal with a color signal as a character signal in accordance with a character data presence/absence signal to output the resultant signal as a composite video output signal. The composite video signal generator detects changes in the color signal and character data presence/absence signal and lowers the amplitude of the color signal at each change point, thereby suppressing the occurrence of a dot disturbance and color mixture.

REFERENCES:
patent: 4639765 (1987-01-01), D'Hont
patent: 5038204 (1991-08-01), Wan et al.

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