Color television receiver with a digital processing system that

Details Color television receiver with a digital processing system that Color television receiver with a digital processing system that

1982-11-26

1985-03-05

Murray, Richard

Facsimile and static presentation processing

Static presentation processing

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358 30, H04N 932

Patent

active

045034540

ABSTRACT:
In a color television receiver with a digital signal processing system, a chroma processor operates on digital samples containing color picture information to develop first and second binary coded digital signals containing two color mixture signal information such as I color mixture information and Q color mixture information. A luminance processor operates on the digital samples to develop a third digital signal containing Y or luminance information. R, G and B digital signals are related to the developed I, Q and Y digital signals by a set of coefficient multipliers. To obtain the R, G and B digital signals, the I, Q and Y digital signals are applied to a digital decoder that includes a ROM look-up table multiplier for multiplying each of the I, Q and Y signals by the appropriate coefficient multiplier. The products thus generated are summed in an adder to obtain each of the R, G and B signals. A digital-to-analog converter develops analog R, G and B voltages for driving the cathode electrodes of the television receiver color picture tube.

REFERENCES:
patent: 4270139 (1981-05-01), Flamm et al.
patent: 4303912 (1981-12-01), Stafford et al.
patent: 4352123 (1982-09-01), Flamm
patent: 4355327 (1982-10-01), Nagumo et al.
Digital Signal Processing for the Marconi Line Array Telecine, R. Matchell, Marconi Communication Systems, Montreux Record, 1983.
U.S. patent application, Ser. No. 405,031, Reduced Data Rate Digital Comb Filter, H. G. Lewis, Jr. & T. V. Bolger, Filed 8/4/82.
The Marconi B3410 Line-Array Telecine, Communications & Broadcasting, Feb. 1982, vol. 7, No. 2, pp. 33-38.
The Marconi B3410 Line Array Telecine, SMPTE Journal, Nov. 1982, pp. 1066-1070.
Digital Video Processing for Telecine, A de M. Fremont, Communications & Broadcasting, vol. 8, No. 2, Feb. 1982, pp. 35-40.

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