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:
Oct. 22, 2002
Filed:
Jan. 06, 1999
Applicant:
Inventors:
Yoshikazu Onuki, Kanagawa, JP;
Hideaki Ishioka, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 5/596 ;
U.S. Cl.
CPC ...
G11B 5/596 ;
Abstract
A head positioning control apparatus and method which compensates for positional deviation of a magnetic head with respect to the positioning of the head on a particular track of a disc recording medium via a tracking control. Additionally, during a seek mode of the apparatus, a head that was positioned as a result of the tracking control is moved to a neighboring track of the disc recording medium. The seek mode uses the information obtained during the tracking mode to correct any disturbance frequencies occurring in synchronism with the rotational frequency of the disc recording medium, even if the head travels over a large distance.