Optical disk apparatus with a plurality of heads

Details Optical disk apparatus with a plurality of heads Optical disk apparatus with a plurality of heads

1990-07-10

1992-11-03

Richardson, Robert L.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 4428, 360 7806, 360 7804, G11B 722

Patent

active

051611376

ABSTRACT:
An optical disk apparatus comprises a plurality of heads for performing erasure of information from, record of information on, and reproduction of information from an optical disk. Each of the heads is movable in transverse to tracks on the optical disk for seek movement. Head drive system is provided for driving the heads so as to move the heads to a target track on the disk. The head drive system is adapted to apply for the seek movements of the heads a first drive force and a second drive force which is smaller than the first drive force to each of the heads in such a manner that when one of the heads is driven by the first drive force, the other heads can be driven by the second drive force only.

REFERENCES:
patent: 4788671 (1988-12-01), Kanda
patent: 4841502 (1989-06-01), Murakami et al.

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