Disk drive device and method for determining data track...

Details Disk drive device and method for determining data track... Disk drive device and method for determining data track...

2011-08-30

2011-08-30

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data in specific format

C360S063000

Reexamination Certificate

active

08009376

ABSTRACT:
Embodiments of the present invention help to improve the capacity and the performance of a disk drive device. According to one embodiment, a data track pitch is set to each recording surface. The recording surfaces are divided into bands. A hard disk drive (HDD) sequentially moves a head to an adjacent data track in a band and performs a head switch at the band end in its data accessing. On a recording surface, the number of data tracks in each band is variable; and each band is constituted by different number of data tracks as necessary. The number of data tracks in each band is set so that the radial position of the band end comes close to the radial position of the corresponding band end on another recording surface. Accordingly, even if the recording surfaces have different variation rates of the data track pitch in the radial direction, increase in process time due to head switches can be suppressed.

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The Extended European Search Report corresponding to the European Application No. 08012239.3, date of mailing Nov. 6, 2008, 6 pages total.

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