Tricolor video signal generator, such as a video game, usable _w

Details Tricolor video signal generator, such as a video game, usable _w Tricolor video signal generator, such as a video game, usable _w

1982-05-27

1984-11-06

Pinkham, Richard C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

273 1E, 273DIG28, 358 37, 358 82, 340793, H04N 952

Patent

active

044815298

ABSTRACT:
A tri-color video signal generator, for use with either a color or black and white standard television receiver, includes a circuit for producing the color signals R, V, B and a matrix circuit for producing a luminance signal Y from the color signals. The generator further includes circuitry for modifying the respective proportions of the R, V, B color signals in the luminance signal Y whereby in a black and white receiving mode, the grey scale of the luminance signal Y is modified making it possible to accentuate the contrast between the picture elements whose original colors would have been converted into luminance levels which are very near one another.

REFERENCES:
patent: 4121283 (1978-10-01), Walker
patent: 4200867 (1980-04-01), Hill
patent: 4229760 (1980-10-01), Avery
patent: 4236175 (1980-11-01), Groothuis
patent: 4261009 (1981-04-01), Tomimoto et al.

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