Invention Grant
- Patent Title: Optical disc identification apparatus and method of identifying optical disc
- Patent Title (中): 光盘识别装置及识别光盘的方法
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Application No.: US11870221Application Date: 2007-10-10
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Publication No.: US07751291B2Publication Date: 2010-07-06
- Inventor: Wen-Chun Feng , Chien-Liang Yeh
- Applicant: Wen-Chun Feng , Chien-Liang Yeh
- Applicant Address: TW Hsinchu
- Assignee: Sunplus Technology Co., Ltd.
- Current Assignee: Sunplus Technology Co., Ltd.
- Current Assignee Address: TW Hsinchu
- Agency: J.C. Patents
- Priority: TW96123020A 20070626
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
An optical disc identification apparatus is disclosed. The optical disc identification apparatus includes an optic pickup unit and a control unit. The optic pickup unit has a plurality of laser sources. The optic pickup unit emits any of lasers to the optical disc and detects the reflected laser from the optical disc to transduce the reflected laser to a detection signal. The control unit controls the optic pickup unit to activate any of the laser sources and moves an object lens of the optic pickup unit. When the object lens moves, the control unit obtains a sectional width value of an S-curve of a focus FE signal according to the detection signal. The control unit repeats above steps to obtain the sectional width values of the S-curves of all the laser sources and identifies the optical disc according to all the sectional width values.
Public/Granted literature
- US20090028023A1 OPTICAL DISC IDENTIFICATION APPARATUS AND METHOD OF IDENTIFYING OPTICAL DISC Public/Granted day:2009-01-29
Information query
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