Invention Grant
- Patent Title: Optical recording medium driving apparatus and optical recording medium driving method
- Patent Title (中): 光记录介质驱动装置和光记录介质驱动方法
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Application No.: US11983072Application Date: 2007-11-07
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Publication No.: US07813230B2Publication Date: 2010-10-12
- Inventor: Masaki Uchida
- Applicant: Masaki Uchida
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Wolf, Greenfield & Sacks, P.C.
- Priority: JP2006-303135 20061108
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
When a type of an optical disc is discriminated by disc type discriminating processing, search operation by a CD light beam is carried out in CD discriminating processing, and a distance from a position xf where a large signal change of a first time is detected as a fake phenomenon to a position xs where the large signal change of a second time corresponding to a recording layer is detected as a moving distance d3. Based on the moving distance d3, whether the optical disc is a CD medium is determined. In this manner, whether the optical disc is the CD medium or not can be determined correctly with high precision.
Public/Granted literature
- US20080130452A1 Optical recording medium driving apparatus and optical recording medium driving method Public/Granted day:2008-06-05
Information query
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