Circuit for producing analog signals of primary colors of a tele

Details Circuit for producing analog signals of primary colors of a tele Circuit for producing analog signals of primary colors of a tele

1986-06-03

1988-05-10

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 30, H04N 1104, H04N 967

Patent

active

047439602

ABSTRACT:
Circuit for producing analog primary signals of a television signal from its digital luminance and chrominance components comprising in series an interpolating digital filter, a digital dematrixer and three digital - analog converters.
The interpolating digital filter carried out an oversampling of the luminance signal Y in a ratio of 2 and an oversampling of each chrominance signal CR, CB in a sampling ratio such that the sampling frequency of the luminance and chrominance digital signals has the same sampling frequency. The digital dematrixer produces the primary digital color signals from the oversampled luminance and chrominance components.

REFERENCES:
patent: 4417269 (1983-11-01), Dischert
patent: 4419686 (1983-12-01), Morrison
patent: 4480271 (1984-10-01), Coleman
patent: 4503454 (1985-03-01), Lewis

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