Disk drives with radially aligned servo burst patterns that...

Details Disk drives with radially aligned servo burst patterns that... Disk drives with radially aligned servo burst patterns that...

2004-12-14

2008-03-11

Wellington, Andrea (Department: 2627)

Dynamic magnetic information storage or retrieval

Modulating or demodulating

C360S077080

Reexamination Certificate

active

07342734

ABSTRACT:
A disk drive includes a rotatable data storage disk, a transducer, an actuator, and a servo burst demodulator. The rotatable data storage disk includes a plurality of servo burst patterns thereon. The plurality of servo burst patterns are substantially radially aligned to each other, and radially adjacent ones of the servo burst patterns are configured to generate contributions to a read signal that are substantially orthogonal to each other. The transducer is configured to read the servo burst patterns on the disk to generate the read signal. The actuator is configured to position the transducer relative to the disk. The servo burst demodulator is configured to identify a separate contribution to the read signal from the radially adjacent servo burst patterns. The servo burst demodulator may be configured to generate transducer position information based on the identified separate contribution to the read signal from the radially adjacent servo burst patterns.

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patent: 2002/0150179 (2002-10-01), Leis et al.

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