Secondary beat signal cancel circuit

Details Secondary beat signal cancel circuit Secondary beat signal cancel circuit

H - Electricity

04

N

352/18, 350/63

H04N 9/87 (2006.01) H04N 9/79 (2006.01)

Patent

CA 1230675

ABSTRACT OF THE DISCLOSURE A magnetic reproducing apparatus is provided with an improved secondary heat signal cancel circuit for reduc- ing a secondary beat signal of a low-frequency converted chroma signal leaked into a reproduced luminance signal without deteriorating a vertical resolution at an edge portion of an oblique check signal. A secondary beat signal cancel operation is stopped during a period in which no vertical correlation exists between the edge portions of two succeeding horizontal lines of the oblique check signal.

461327

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