Disk device and disk drive controlling method

Details Disk device and disk drive controlling method Disk device and disk drive controlling method

2009-10-27

2011-10-04

Lamb, Christopher (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Control of information signal processing channel

C369S047450

Reexamination Certificate

active

08031568

ABSTRACT:
A disk device includes a main control unit controlling the operation of a controlled object on the basis of an error signal calculated from a target signal of the controlled object and an observation signal of the controlled object, a repetitive control unit sampling the error signal with a sampling clock pulse to obtain a repetitive signal component generated in synchronization with rotation of the disk medium from the sampled error signal, a sampling clock generation unit generating the sampling clock pulse and resetting a timing at which the sampling clock pulse is generated in accordance with a rotation detecting pulse and a sampling clock limit unit limiting generation of the sampling clock pulse at a timing immediately before generation of the rotation detecting pulse.

REFERENCES:
patent: 4809248 (1989-02-01), Sengoku
patent: 7136339 (2006-11-01), Kubota et al.
patent: 2003/0174614 (2003-09-01), Tateishi et al.
patent: 2008/0192593 (2008-08-01), Lin
patent: 2006-313589 (2006-11-01), None
patent: 2008-165840 (2008-07-01), None

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