Disk drive apparatus with intermittently operated servo signal p

Details Disk drive apparatus with intermittently operated servo signal p Disk drive apparatus with intermittently operated servo signal p

1991-05-29

1992-08-18

Envall, Jr., Roy N.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

360 7711, 360 7702, 360 7814, 369 4426, G11B 700

Patent

active

051405717

ABSTRACT:
A disk drive apparatus which consumes less power to control the movement of a head on the basis of servo signals which are intermittently reproduced from a disk-like recording medium has a servo signal processing circuit driven by a clock signal for generating a head control signal from the servo signals which are intermittently reproduced from the disk-like recording medium and for generating a processing period signal indicative of a processing period in which the servo signals are being processed, a head driving circuit to control the movement of the head on the basis of the head control signal, a clock generator to supply the clock signal, a servo signal reproduction detecting circuit to detect a servo signal reproducing interval in which the servo signals are being reproduced form the disk-like recording medium, and a circuit to control the supply of the clock signal to the servo signal processing circuit on the basis of detection of the servo signal reproducing interval by the servo signal reproduction detecting circuit and the processing period signal from the servo signal processing circuit.

REFERENCES:
patent: 4646279 (1987-02-01), Yonezawa
patent: 4811126 (1989-03-01), Suzuki et al.
patent: 4819103 (1989-04-01), Okamura
patent: 4964109 (1990-10-01), Yoshioka
patent: 4967403 (1990-10-01), Ogawa et al.
patent: 5019816 (1991-05-01), Hosono

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