Patent ID: 7855851
Filing Date: 2010-12-21
Classification: G11B

Abstract:
1. A storage device comprising: 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; an error correcting unit that corrects an error in the position-information correction value using the error correcting code; and a control unit 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 error correcting unit, and the position information read by the head so that the head is located at a target position on the storage medium, wherein when the error in the position-information correction value read by the head cannot be corrected, the error correcting unit causes a storage unit to store information that prevents the position-information correction value from being used for position control.