Character synthesizer for inserting into video signals character

Details Character synthesizer for inserting into video signals character Character synthesizer for inserting into video signals character

1990-10-31

1992-06-30

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358183, H04N 5278

Patent

active

051268329

ABSTRACT:
A character synthesizer for inserting into video signals, characters having complementary colors of video signals. The character synthesizer includes a video decoder for decoding the incoming video color signals to produce color-difference signals, a color-phase detector for detecting the color-phase voltage of the color-difference signals, an excessive white detector for comparing the brightness signals with a reference voltage, a low saturation detector for comparing the color signals with the low saturation voltage, a character generator, a complementary color detecting and control device, a video encoder for encoding the color signals of the characters, a mixer for combining the incoming video signals and the video-encoded color signals of characters, and a delay device for delaying the character signals by the time necessary for the complementary color transformation and video encoding.

REFERENCES:
patent: 4580158 (1986-04-01), Macheboeuf

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