Arrangement for compensating duty factor variations in an...

Details Arrangement for compensating duty factor variations in an... Arrangement for compensating duty factor variations in an...

G - Physics

11

B

352/55

G11B 7/00 (2006.01) G11B 23/00 (2006.01) H04N 5/76 (2006.01) H04N 5/93 (2006.01)

Patent

CA 1074916

ABSTRACT OF THE DISCLOSURE Processing optical video discs may result in modulation of the duty factor of the pits and lands which constitute a spatial representation of a stored carrier signal frequency modulated with program information. Such modulation of duty factor introduces spurious components that are detri- mental to image reproduction if the frequency of the stored carrier signal is not at least twice the highest video frequency component to be reproduced. A correction signal is developed and used to at least partially cancel the effect of such spurious components.

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