COLOR SIGNAL PROCESSOR

A color signal processor in which a color subcarrier is multiplied with either a signal harmonic or a phase shifted harmonic of a low frequency chrominance signal, depending on whether the R-Y axis of the chrominance signal is inverted. Band pass filtering extracts an arithmetic carrier signal resul...

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Bibliographic Details
Main Author KIMURA, ICHIRO
Format Patent
LanguageEnglish
Published 15.10.1998
Edition6
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:A color signal processor in which a color subcarrier is multiplied with either a signal harmonic or a phase shifted harmonic of a low frequency chrominance signal, depending on whether the R-Y axis of the chrominance signal is inverted. Band pass filtering extracts an arithmetic carrier signal resulting from the multiplication. The low frequency chrominance signal is multiplied by the extracted arithmetic carrier, and band pass filtering removes both upper and lower side band components generated in accordance with the low frequency chrominance signal multiplication. Various configurations of the above invention eliminate the need for a circuit inverting the R-Y axis, simplifying the structure of color signal processors and related devices. In addition, since no resonating circuit is used, the invention can be effectively implemented in an integrated circuit.
Bibliography:Application Number: KR19940032017