Invention Grant
- Patent Title: Optical disc device and converging position correction method
- Patent Title (中): 光盘装置和会聚位置校正方法
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Application No.: US12131333Application Date: 2008-06-02
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Publication No.: US07948840B2Publication Date: 2011-05-24
- Inventor: Kimihiro Saito , Hirotaka Miyamoto
- Applicant: Kimihiro Saito , Hirotaka Miyamoto
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JPP2007-155283 20070612
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
An optical disc device that irradiates an optical beam to an optical disc including a recording layer for recording information and a positioning layer provided with a track for identifying a recording position of the information on the recording layer, includes: objective lens that converges a predetermined positioning optical beam to adjust the optical beam to a desired track on the positioning layer and converges an information optical beam that shares an optical axis with the positioning optical beam on the recording layer; moving section that moves the objective lens in a tracking direction which is substantially orthogonal to the track to make a focal point of the positioning optical beam to follow the desired track; a detection section that detects a moving amount of the objective lens to the tracking direction; and correction section that corrects a converging position of the information optical beam in accordance with the moving amount.
Public/Granted literature
- US20080316902A1 OPTICAL DISC DEVICE AND CONVERGING POSITION CORRECTION METHOD Public/Granted day:2008-12-25
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