Clock generating circuit by using the phase difference between a

Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data clocking

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386 13, 386 85, 331 20, G11B 509

Patent

active

057453144

ABSTRACT:
A circuit for generating a clock of a predetermined frequency in folllowing-up relation to an input video signal, comprising a PLL circuit including a phase comparison circuit for comparing the phase of a synchronizing signal of the video signal with the phase of a feedback clock corresponding to the clock, and a control circuit for causing the feedback clock in the PLL circuit to be synchronized with the synchronizing signal.

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patent: 4812783 (1989-03-01), Honjo et al.
patent: 5142420 (1992-08-01), Tanaka et al.

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