Time base corrector

Details Time base corrector Time base corrector

H - Electricity

04

N

352/18.3

H04N 5/95 (2006.01) H04N 9/896 (2006.01)

Patent

CA 1274910

ABSTRACT OF THE DISCLOSURE A time base corrector for correcting time base fluctuations in a video signal is effective to remove both low frequency time base fluctuations and repetitive high frequency time base fluctuations repeating at the field period of the video signal. The time base corrector includes a memory having a plurality of addresses for storing residual phase error data corresponding to individual horizontal lines of each field period. A control circuit supplies corresponding residual phase error data from the memory to be used in compensating a present phase error signal whereby the high frequency time base fluc- tuations may be removed, and further mixes the present phase error signal with corresponding residual phase error data to generate new residual phase error data for storage in the memory in place of the original residual phase error data.

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