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:
May. 25, 2010
Filed:
Aug. 24, 2007
Po-chuan Su, Hsinchu, TW;
Yi-chuan Pan, Hsinchu, TW;
Mu-shu Tsai, Hsinchu, TW;
Lite-on It Corporation, Hsinchu, TW;
Abstract
A reading method for finding if a disc is placed reversely used in an optical disc drive is provided. The optical disc drive has a spindle motor, an optical pickup head having a lens, a fine actuator and a sled actuator. Firstly, a disc is placed into the optical disc drive. Next, the spindle motor rotates the disc. After that, a laser light of the optical pickup head is shot on the disc. Next, the lens is moved such that the laser light follows a single data track. Then, a central error signal of the lens is measured continuously. Afterwards, if the central error signal increases progressively, the optical disc drive finds the disc placed reversely, and the disc is ejected from the optical disc drive.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile