Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
358 36, 358340, H04N 521
A noise reduction system for reducing noise in a video signal comprises a pre-emphasis circuit for subjecting the video signal which is supplied to a transmission system to a pre-emphasis in a vertical direction of a picture and in a direction oblique to the vertical direction, and a de-emphasis circuit for subjecting the pre-emphasized video signal obtained through the transmission system to a de-emphasis complementary to the pre-emphasis.
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Groody James J.
Meller Michael N.
Peng John K.
Victor Company of Japan Ltd.
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