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:
Jul. 28, 2009
Filed:
Mar. 01, 2006
Yu-hsuan Lin, Tai-Chung, TW;
Jin-bin Yang, Changhua County, TW;
Chih-ching Chen, Miao-Li County, TW;
Gwo-huei Wu, Taipei Hsien, TW;
Yu-Hsuan Lin, Tai-Chung, TW;
Jin-Bin Yang, Changhua County, TW;
Chih-Ching Chen, Miao-Li County, TW;
Gwo-Huei Wu, Taipei Hsien, TW;
Media Tek Inc., Hsin-Chu Hsien, TW;
Abstract
A control circuit and a control method of controlling a rotation frequency of a spindle in an optical disc drive, the control circuit comprising: a spindle controller, electrically coupled to the spindle, for driving the spindle to rotate an optical disc according to a rotation control signal; a detector, electrically coupled to the spindle controller, for detecting the rotation frequency and for generating detecting signals; a frequency-adjusting module, electrically coupled to the detector, for adjusting at least one of the detecting signals to reduce a rotation frequency difference between detecting signals; a signal selector, electrically coupled to the frequency-adjusting module, for receiving output signals generated from the frequency-adjusting module and then outputting the rotation control signal.