Storage device

Details Storage device Storage device

2009-03-30

2010-12-21

Sniezek, Andrew L (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S077020

Reexamination Certificate

active

07855851

ABSTRACT:
A magnetic disk device includes a head that reads position information, a position-information correction value for correcting the position information, and an error correcting code for the position-information correction value from a storage medium; a microcontroller unit (MCU) and an error check and correct (ECC) circuit for correcting an error in the position-information correction value based on the error correcting code; and a static var compensator (SVC) that performs position control based on either one of the position-information correction value read by the head and the position-information correction value with the error corrected by the MCU and the ECC circuit, and the position information read by the head so that the head is located at a target position on the storage medium.

REFERENCES:
patent: 6856660 (2005-02-01), Watanabe et al.
patent: 7027256 (2006-04-01), Subrahmanyam et al.
patent: 2005/0190480 (2005-09-01), Mori et al.
patent: 2007/0139811 (2007-06-01), Ohinata et al.
patent: A 60-117461 (1985-06-01), None
patent: A 2000-100084 (2000-04-01), None
patent: A 2007-80388 (2007-03-01), None

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