Digital integrated circuit for the color matrix of a color-telev

Details Digital integrated circuit for the color matrix of a color-telev Digital integrated circuit for the color matrix of a color-telev

1985-07-01

1986-02-04

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 23, H04N 976

Patent

active

045689687

ABSTRACT:
The circuit contains three multipliers/adders for the luminance signal (y) and the two color-difference signals (r-y, b-y). For the output signals of these stages, four parallel adders are provided. The multipliers for the factors -0.51 and -0.19, which would be required in accordance with the color-television-system formula y=0.3r+0.59g+0.11b are rendered unnecessary because, among other things, the input signals are provided with correction factors (k, L, m) and correction addends (d, e, f) in the multipliers/adders in view of a presettable color overload.

REFERENCES:
patent: 4270139 (1981-05-01), Flamm
patent: 4303912 (1981-12-01), Stafford et al.
patent: 4355327 (1982-10-01), Nagumo et al.
patent: 4503454 (1985-03-01), Lewis, Jr.

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