Disc driving apparatus having means for placing a read record he

Details Disc driving apparatus having means for placing a read record he Disc driving apparatus having means for placing a read record he

1994-06-01

1996-01-16

Epps, Georgia Y.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 43, G11B 390

Patent

active

054854458

ABSTRACT:
A disc driving apparatus comprising an optical head as a record/reproduce means for recording information on and/or reproduce the same optically from a disc type recording medium;a feed motor as a feed means for moving the optical head toward the innermost or outermost region of the disc; a limit switch as a detector means for detecting that the optical head is placed at a first position proximate to the innermost region of the disc; and a butt member as a positioning means formed to butt against the optical head for limiting the motion of the optical head at a second position in the innermost region of the disc. The speed of the optical head being moved toward the innermost region of the disc by means of the feed motor is changed to a lower speed in synchronism with turn-on of the limit switch, and then the optical head is brought to a halt at the predetermined position limited by the butt member, whereby the optical head is placed exactly at the desired position.

REFERENCES:
patent: 4723235 (1988-02-01), Yasuda et al.
patent: 5136569 (1992-08-01), Fennema et al.

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