Invention Grant
- Patent Title: Disk discriminating method and optical disk apparatus
- Patent Title (中): 盘识别方法和光盘装置
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Application No.: US11367700Application Date: 2006-03-06
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Publication No.: US07649821B2Publication Date: 2010-01-19
- Inventor: Takakiyo Yasukawa
- Applicant: Takakiyo Yasukawa
- Applicant Address: JP Tokyo JP Tokyo
- Assignee: Hitachi, Ltd.,Hitachi-LG Data Storage, Inc.
- Current Assignee: Hitachi, Ltd.,Hitachi-LG Data Storage, Inc.
- Current Assignee Address: JP Tokyo JP Tokyo
- Agency: McDermott Will & Emery LLP
- Priority: JP2005-167668 20050608
- Main IPC: G11B7/00
- IPC: G11B7/00
Abstract:
The number of the layers of a disk is determined based on focus search to be performed after at least two kinds of spherical aberration correction quantities are set.
Public/Granted literature
- US20060280082A1 Disk discriminating method and optical disk apparatus Public/Granted day:2006-12-14
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