公开(公告)号：CA2071412A1

公开(公告)日：1993-05-02

申请号：CA2071412

申请日：1992-06-17

Applicant: IBM

Inventor： ANDERSON CLARK A ,  ANDERSON TODD B ,  CADLONI GERALD L ,  CUNNINGHAM EARL A ,  HICKEN MICHAEL S ,  RENO DANIEL D ,  STEPHENSON JOHN J

IPC: G11B21/08 ,  G11B5/55 ,  G11B5/596 ,  G11B19/20

Abstract: RO9-91-037 METHOD AND APPARATUS FOR REDUCING TRACK SWITCH LATENCY IN A DISK DRIVE In a ultra high density, multiple-disk drive, track switches within a cylinder of tracks as well as track switches to tracks on other cylinders both require a movement of the head stack actuator. Track switching latency in such a disk drive is reduced by overlapping pre-movement portions of the track switching process with the data transfer operation of the currently active recording head. In addition, post-movement portions of the track switching process are overlapped with the movement of the heads so that the next selected read/write head may begin a data transfer operation immediately upon arrival at the next track. Further, the pre-movement and post-movement portions of the track-switch process may be overlapped with low displacement movement of the read/write heads relative to the currently active track or the next track.