Write clock generator for time base corrector

Details Write clock generator for time base corrector Write clock generator for time base corrector

H - Electricity

04

N

352/18.3

H04N 9/89 (2006.01) H04N 9/896 (2006.01)

Patent

CA 1291811

ABSTRACT OF THE DISCLOSURE A write clock generator for a time base corrector incorporated in a video tape recorder can generate a write clock signal including accurate phase and frequency fluctuation information on a reproduced video signal in spite of a simple circuit configuration. A write clock signal is generated from a VCO oscillated in response to a reproduced burst signal, and further the VCO is so controlled on the basis of a frequency difference between the oscillated write clock signal and a frequency fluctuation signal such that the frequency difference may be eliminated. The frequency fluctuation signal is generated in response to a horizontal synchronizing signal so as to include time base fluctuations in a reproduced video signal.

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