Invention Grant
US09412408B2 Optical information recording medium having first and second pit row of identical reflectance
有权
具有相同反射率的第一和第二凹坑列的光学信息记录介质
- Patent Title: Optical information recording medium having first and second pit row of identical reflectance
- Patent Title (中): 具有相同反射率的第一和第二凹坑列的光学信息记录介质
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Application No.: US14895241Application Date: 2014-04-08
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Publication No.: US09412408B2Publication Date: 2016-08-09
- Inventor: Takayuki Naka , Hirohisa Yamada , Masaki Yamamoto , Hideharu Tajima , Masahito Konishi
- Applicant: Sharp Kabushiki Kaisha , Memory-Tech Holdings Inc.
- Applicant Address: JP Osaka JP Tokyo
- Assignee: Sharp Kabushiki Kaisha,MEMORY-TECH HOLDINGS INC.
- Current Assignee: Sharp Kabushiki Kaisha,MEMORY-TECH HOLDINGS INC.
- Current Assignee Address: JP Osaka JP Tokyo
- Agency: Keating & Bennett, LLP
- Priority: JP2013-120958 20130607
- International Application: PCT/JP2014/060171 WO 20140408
- International Announcement: WO2014/196264 WO 20141211
- Main IPC: G11B7/24
- IPC: G11B7/24 ; G11B7/24085 ; G11B7/005 ; G11B7/007 ; G11B7/24079
Abstract:
In a case where (i) a reflectance calculated from a reflected light amount obtained from a longest pit (P1max) or a longest space (S1max) in a first pit row is defined as a first reflectance and (ii) a reflectance calculated from a reflected light amount obtained from a longest pit (P2max) or a longest space (S2max) in the second pit row is defined as a second reflectance, the first pit row is formed such that the first reflectance becomes substantially identical with the second reflectance.
Public/Granted literature
- US20160125908A1 OPTICAL INFORMATION RECORDING MEDIUM, REPRODUCTION METHOD, AND REPRODUCTION DEVICE Public/Granted day:2016-05-05
Information query
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