The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 05, 2006
Filed:
Feb. 03, 2006
Mirei Hosono, Kanagawa, JP;
Isao Yoneda, Kanagawa, JP;
Mirei Hosono, Kanagawa, JP;
Isao Yoneda, Kanagawa, JP;
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
Embodiments of the invention provide a data storage apparatus and its control method capable of accurately reading/writing data. A data storage apparatus in an embodiment of the invention comprises: a servo control section which, based on servo data stored on the storage medium, generates servo control data to control the position of the head; a sensor to detect vibration; a compensation data generating section which generates compensation data to compensate for the head's position error caused by vibration; a drive signal generating section which can generate a drive signal to move the head based on the servo control data and the compensation data; an arithmetic processing section which updates a rating value to evaluate the level of vibration given to the data storage apparatus; and a determination processing section which, according to the updated rating value, determines whether to perform the compensation using the compensation data; wherein the drive signal generating section compensates the servo control data using the compensation data in generating the drive signal.