Circuit arrangement for A/D conversion of the color information

Details Circuit arrangement for A/D conversion of the color information Circuit arrangement for A/D conversion of the color information

1991-09-05

1994-04-12

Peng, John K.

Television

Image signal processing circuitry specific to television

Color television signal processing

348469, 348705, H04N 900

Patent

active

053030389

ABSTRACT:
For the possibly simultaneous A/D conversion of two color difference signals of a first picture signal as well as a carrier-frequency chrominance signal of a second picture signal, a relevant circuit arrangement is provided with a multiplexer (3) by which a time-division multiplex signal is generated from the two color difference signals, in which time-division multiplex signal the two color difference signals alternate in time and which is added to the chrominance signal in an adder (5) to form a sum signal which is applied to an A/D converter (10) which is followed by a separating filter (11) for separating the digital time-division multiplex signal from the digital chrominance signal.

REFERENCES:
patent: 3133148 (1964-05-01), Rennick
patent: 3700793 (1972-10-01), Borsuk et al.
patent: 4163248 (1979-07-01), Heitmann
patent: 4821086 (1989-04-01), McNeely et al.
patent: 4958230 (1990-09-01), Jonnalagadda et al.

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