Circuit and process for chrominance decoding with analog or digi

Details Circuit and process for chrominance decoding with analog or digi Circuit and process for chrominance decoding with analog or digi

1983-12-08

1985-11-12

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 18, 358 14, H04N 950, H04N 947, H04N 940

Patent

active

045531560

ABSTRACT:
The present invention provides a matching circuit for connecting a chrominance decoding integrated circuit normally connected by terminals to a conventional analog delay line so as to make it compatible with a digital delay line. This matching circuit comprises a switch connecting alternately each of the outputs of the integrated circuit to an analog-digital convertor connected to a digital delay line, to a digital-analog convertor, then to a switch routing the signal alternately to each of the two summators whose other inputs receive directly the output of the integrated circuit. The summators supply then respectively the chrominance signals R-Y and B-Y.

REFERENCES:
Radio Mentor Electronic, vol. 46, No. 7/8, Jul./Aug. 1980, pp. 212-213, Munich, Germany, "Digitale Signalverarbeitung im Farbfernseher".

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