Digital phase servo system

Details Digital phase servo system Digital phase servo system

G - Physics

11

B

352/21.1

G11B 17/00 (2006.01)

Patent

CA 1097801

ABSTRACT OF THE DISCLOSURE In a digital servo system suitable for controlling the rotational phase of a rotating body, such as, the rotary head drum of a video tape recorder (VTR), a binary output signal is provided, as a phase error signal, based upon the phase relation between a reference signal and a command signal showing the rotational phase of the rotary head drum, and such binary output signal is used to process a motor drive signal. Further, an analog servo system is used in association with the digital servo system to provide highly accurate correction of both high and low frequency phase errors.

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