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. 06, 2005
Filed:
Aug. 29, 2002
Applicants:
Kazuhiro Sekine, Tokyo, JP;
Hirotomo Yunoki, Chiba, JP;
Inventors:
Kazuhiro Sekine, Tokyo, JP;
Hirotomo Yunoki, Chiba, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B021/08 ;
U.S. Cl.
CPC ...
Abstract
A disk drive apparatus is disclosed for stabilizing a track jumping operation of an objective lens. The disk drive apparatus includes a detection section for detecting the direction that object lens is being moved by a tracking operation, and a discrimination section for discriminating the direction of the track jumping operation. A track jump movement then performed based on the detection of movement and discrimination of the track jump operation. Therefore, the track jump is stabilized without being influenced by the movement of the objective lens by the tracking operation.