Drive system

Details Drive system Drive system

1983-10-28

1986-08-19

Richardson, Robert L.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 98, 360101, 360 75, 360106, G11B 700

Patent

active

046073558

ABSTRACT:
A drive system for use in an optical disk file device has a multipolar motor such as a three-phase linear DC motor for positionally controlling a read/write head and driving the same to track an optical disk. Selection of the coils of the motor and phase switching of the coils are stopped while the drive system is in the tracking mode.

REFERENCES:
patent: 4340949 (1982-07-01), Kelleher
patent: 4481613 (1984-11-01), Yokota
patent: 4506355 (1985-03-01), Dakin et al.

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