Pickup actuator for disk-type media

Details Pickup actuator for disk-type media Pickup actuator for disk-type media

1988-03-21

1990-07-17

Levy, Stuart S.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369111, 369249, 369219, 369 4421, G11B 0712, G11B 0310, G11B 2108

Patent

active

049425625

ABSTRACT:
A pickup actuator includes a slider, an optical pickup unit, and at least one suspension arm extending from the slider for suspending the pickup unit. The pickup unit includes at least one bobbin surrounding a yoke plate, upon which a first coil is wound, and further transversely mounted coils attached to the first coil. The coils collectively control movement of the pickup unit in tracking, focusing and tilt directions thereof. A further bobbin connected to the slider surrounds the yoke plate and includes a further coil wound thereabout for driving the slider and the pickup unit radially of an associated optical disk.

REFERENCES:
patent: 4547871 (1985-10-01), Sugiyama et al.
patent: 4570249 (1986-02-01), Malissin et al.
patent: 4583212 (1986-04-01), Koide et al.
patent: 4823336 (1989-04-01), Inada et al.

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