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:
Sep. 21, 2010
Filed:
Apr. 23, 2007
Te-wang Tseng, Hsinchu County, TW;
Chih-chiang Chu, Taoyuan County, TW;
Te-Wang Tseng, Hsinchu County, TW;
Chih-Chiang Chu, Taoyuan County, TW;
Mediatek Inc., Hsin-Chu, TW;
Abstract
An optical disc drive and method thereof. The optical disc drive comprises a rotating means, an optical pickup head, a servo unit, and a controller. The rotating means rotates an optical disc. The optical pickup head generates an optical beam to detect defects in a predetermined range on the optical disc. The servo unit, coupled to the optical pickup head, is responsive to an operating parameter to control the optical pickup head. The controller, coupled to the optical pickup head and the servo unit, identifies a defect type based on the defect detection result; and determines the operating parameter of the servo unit according to the defect type.