发明名称 Disc driving apparatus having means for placing a read record head at a predetermined position in the innermost region of a disc
摘要 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.
申请公布号 US5485445(A) 申请公布日期 1996.01.16
申请号 US19940252069 申请日期 1994.06.01
申请人 SONY CORPORATION 发明人 OINOUE, HIROSHI;KANADA, TOKIO
分类号 G11B7/085;G11B21/08;(IPC1-7):G11B3/90 主分类号 G11B7/085
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