Invention Grant
- Patent Title: Optical disc apparatus
- Patent Title (中): 光盘装置
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Application No.: US11488898Application Date: 2006-07-18
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Publication No.: US07675824B2Publication Date: 2010-03-09
- Inventor: Toshikazu Kobayashi
- Applicant: Toshikazu Kobayashi
- Applicant Address: JP Tokyo
- Assignee: Sony Computer Entertainment Inc.
- Current Assignee: Sony Computer Entertainment Inc.
- Current Assignee Address: JP Tokyo
- Agency: Katten Muchin Rosenman LLP
- Priority: JP2005-209257 20050719
- Main IPC: G11B7/00
- IPC: G11B7/00 ; G11B7/125 ; G11B5/55

Abstract:
One of the objects of the invention is to provide an optical disc apparatus capable of focusing on a signal surface regardless of appearance of a fake signal. The optical disc apparatus includes: an optical pickup for outputting a signal on the basis of reflection light of the optical disc, the optical pickup including an objective lens; a driving section for moving the objective lens of the optical pickup relative to an optical disc surface; and a focus controlling section for carrying out a focus detecting operation by detecting a reflection signal on a signal surface of the optical disc from the output signal of the optical pickup within a predetermined range of distance between the objective lens and the optical disc surface while the objective lens is being moved relative to the optical disc surface by means of the driving section.
Public/Granted literature
- US20070019516A1 Optical disc apparatus Public/Granted day:2007-01-25
Information query
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