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. 28, 2010
Filed:
Mar. 11, 2005
Gwo-huei Wu, Pan-Chiao, TW;
Yuh Cheng, Chu-Pei, TW;
Chao-ming Huang, Hsin-Tien, TW;
Chih-yuan Chen, Hsin-Chu, TW;
Ching-ning Chiu, Chu-Pei, TW;
Gwo-Huei Wu, Pan-Chiao, TW;
Yuh Cheng, Chu-Pei, TW;
Chao-Ming Huang, Hsin-Tien, TW;
Chih-Yuan Chen, Hsin-Chu, TW;
Ching-Ning Chiu, Chu-Pei, TW;
MediaTek Inc., Hsin-Chu, TW;
Abstract
A detector is scanned across an optical storage medium having groove tracks and land tracks, each track having a wobble structure, to detect light reflected from the optical storage medium. A wobble signal and a tracking error signal are generated based on an output of the detector, and the wobble signal is sampled according to the tracking error signal. A determination about whether the detector is at the groove track or the land track is made based on the tracking error signal and a comparison of sampled values of the wobble signal.