H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/42
H04N 9/04 (2006.01) H04N 9/077 (2006.01) H04N 9/64 (2006.01)
Patent
CA 1202410
ABSTRACT OF THE DISCLOSURE A noise reduction circuit for a color video signal, comprises a circuit for obtaining a gate pulse signal responsive to a point of a luminance change in a luminance signal of a color video signal, a circuit for obtaining a high-frequency component of a color signal of the color video signal, which color signal has a noise admixed therewith, a gate circuit for gating a signal in a duration corresponding to a gate pulse of the gate pulse signal, from the high-frequency component of the color signal which is obtained, a band limiting circuit for limiting the band of the color signal so as to eliminate the high- frequency component thereof, and a circuit for adding an output of the gate circuit and an output of the band limiting circuit so as to obtain a color signal which has been reduced of the noise.
451090
Kuriyama Takashi
Nakagaki Shintaro
Marks & Clerk
Victor Company Of Japan Ltd.
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