公开(公告)号：JPH11250601A

公开(公告)日：1999-09-17

申请号：JP35343298

申请日：1998-12-11

Applicant: ST MICROELECTRONICS INC

Inventor： MICHAEL W NARU ,  CAROBOLANTE FRANCESCO ,  SCHLAGER KARL M

IPC: G11B21/12 ,  G11B5/54

Abstract: PROBLEM TO BE SOLVED: To prevent damage of head, disk and recording information by moving first the head toward the internal diameter of recording medium, then toward the external diameter and finally stopping on a lamp located at the external diameter. SOLUTION: At the time of parking a head 40, a control current being supplied to an actuator motor 16 is usually cut off and a drive current is then supplied to the actuator motor 16 from a driver circuit 150 supplying the drive current to a 3-phase DC brushless spindle motor. First, the head 40 is moved in the internal diameter direction of disk 18 until an actuator arm 14 is in contact with an internal side crush stop 56. Next, the driver circuit 150 supplies a high voltage to drive the spindle motor to the actuator motor 16 and the head 40 is located at the flat part of lamp 60 considering amount of movement to be accumulated while the head 40 moves to the external diameter 54 crossing the disk 18.