Invention Grant
- Patent Title: Optical disc apparatus and tracking control method
- Patent Title (中): 光盘装置及跟踪控制方法
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Application No.: US12824494Application Date: 2010-06-28
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Publication No.: US08089838B2Publication Date: 2012-01-03
- Inventor: Kimihiro Saito
- Applicant: Kimihiro Saito
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Wolf, Greenfield & Sacks, P.C.
- Priority: JP2009-163939 20090710
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
An optical disc apparatus includes: a rotation section to rotate an optical disc including a spiral or concentric track with a predetermined track center, with a rotational center of the optical disc as the center; a light source to emit a light beam; an objective lens to collect the light beam on the optical disc; a lens drive section to drive the objective lens in a tracking direction; a light-receiving section to receive a reflected light beam and generate a light-receiving signal; a tracking error signal generation section to generate a first tracking error signal based on the light-receiving signal; an eccentric-state acquisition section to acquire an eccentric state of the track center; a correction section to generate a corrected tracking error signal; and a drive control section to drive the objective lens in the tracking direction by the lens drive section based on the corrected tracking error signal.
Public/Granted literature
- US20110007619A1 OPTICAL DISC APPARATUS AND TRACKING CONTROL METHOD Public/Granted day:2011-01-13
Information query
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