Disk drive employing different servo TPI to data TPI ratios...

Details Disk drive employing different servo TPI to data TPI ratios... Disk drive employing different servo TPI to data TPI ratios...

2011-07-19

2011-07-19

Negrón, Daniell L (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data in specific format

C360S077080

Reexamination Certificate

active

07982993

ABSTRACT:
A disk drive is disclosed having a first disk surface, and a head actuated over the first disk surface. The first disk surface comprises a plurality of servo tracks and a plurality of data tracks. The data tracks of the first disk surface are banded together into a plurality of data zones, including a first data zone and a second data zone. A first servo tracks per inch (STPI) to data tracks per inch (DTPI) ratio of the first data zone is substantially different from a second STPI to DTPI ratio of the second data zone.

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