G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 5/55 (2006.01) G11B 5/596 (2006.01) G11B 19/20 (2006.01)
Patent
CA 2071412
RO9-91-037 METHOD AND APPARATUS FOR REDUCING TRACK SWITCH LATENCY IN A DISK DRIVE ABSTRACT OF THE DISCLOSURE 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.
Anderson Clark Alan
Anderson Todd Barry
Cadloni Gerald Lawrence
Cunningham Earl Alber
Hicken Michael Scott
Barrett B.p.
International Business Machines Corporation
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