Servo control system for head recording and/or reproducing infor

Details Servo control system for head recording and/or reproducing infor Servo control system for head recording and/or reproducing infor

1993-09-28

1995-12-26

Epps, Georgia Y.

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369124, 369 4425, G11B 700

Patent

active

054793882

ABSTRACT:
A servo control system for controlling position of a readout head such as a magnetic or optical head which records, reproduces or erases information on or from a magnetic or magneto-optical disk. This servo control system includes an actuator for moving the head toward a required position on the disk, a position detecting circuit for detecting a position of the head relative to the disk, and a signal processing circuit for processing an output signal from the position detecting circuit to provide a control signal to the actuator. When a value of the signal from the position detecting circuit falls within a preselected range, a controller deactivates a servo control operation of the signal processing circuit and modifies controlled parameters used in the servo control operation in response to a disturbance such as vibration of the system.

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patent: 5177726 (1993-01-01), Terada
patent: 5235577 (1993-08-01), Ogino

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