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. 14, 2010
Filed:
Jun. 04, 2007
Yuh Cheng, Hsin-Chu County, TW;
Chih-ching Chen, Miaoli County, TW;
Chia-wei Liao, Hsinchu County, TW;
Ming-jiou Yu, Taipei, TW;
Kuo-jung Lan, Taipei County, TW;
Shu-hung Chou, Taipei County, TW;
Yu-hsuan Lin, Taichung, TW;
Yuh Cheng, Hsin-Chu County, TW;
Chih-Ching Chen, Miaoli County, TW;
Chia-Wei Liao, Hsinchu County, TW;
Ming-Jiou Yu, Taipei, TW;
Kuo-Jung Lan, Taipei County, TW;
Shu-Hung Chou, Taipei County, TW;
Yu-Hsuan Lin, Taichung, TW;
Mediatek Inc., Hsin-Chu, TW;
Abstract
An apparatus for light spot servo signal detection for reading an optical recording medium having a plurality of non-writable areas between writable data areas containing address information. An optical pickup provides a light spot to the non-writable areas of the optical recording medium with a predetermined state according to a control signal, and detects optical reflecting signals from the optical recording medium to generate a detection signal. A signal adjusting module offsets signal levels of the detection signal to an operating range to generate an offset shifted detection signal. An analog to digital converter digitizes the offset shifted detection signal to generate a digital signal. A detection circuit detects the servo detection signal according to the digital signal.