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:
Aug. 12, 2003
Filed:
May. 28, 2002
Applicant:
Inventor:
Yi-Chung Chan, Taipei, TW;
Assignee:
Via Technologies Inc., Hsin-Tien, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 2/108 ;
U.S. Cl.
CPC ...
G11B 2/108 ;
Abstract
A long seeking method, used in an optical disc drive, includes identifying the position of the pick-up head, applying a first driving force on the pick-up head in addition to the velocity control force when the pick-up head is within the acceleration region, where the direction of the first driving force is the same as the moving direction of the pick-up head, and applying a second driving force on the pick-up head in addition to the velocity control force when the pick-up head is within the deceleration region where the direction of the first driving force is opposite to the moving direction of the pick-up head.