Method and system for time-shift based rotational vibration...

Details Method and system for time-shift based rotational vibration... Method and system for time-shift based rotational vibration...

2005-09-20

2005-09-20

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C051S302000, C051S302000, C051S302000

Reexamination Certificate

active

06947243

ABSTRACT:
A method (and structure) senses a rotational vibration of a disk drive. The disk drive includes a rotating disk. The disk includes a plurality of reference bits across a surface thereof. The method (and structure) includes detecting the reference bits across a pattern on the rotating disk, and analyzing a time interval between adjacent ones of the reference bits.

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patent: 2565637 (1996-10-01), None
Jinzenji et al., “Acceleration Feedforward Control Against Rotational Disturbance In Hard Disk Drives”, IEEE 2001, Nov. 22, 2000, 6 Pages Total.

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