- 专利标题: Optical information recording medium having super-resolution film
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申请号: US13702613申请日: 2011-06-10
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公开(公告)号: US08699313B2公开(公告)日: 2014-04-15
- 发明人: Hideharu Tajima , Go Mori , Yasuhiro Harada , Masaki Yamamoto , Hirohisa Yamada , Masahito Konishi
- 申请人: Hideharu Tajima , Go Mori , Yasuhiro Harada , Masaki Yamamoto , Hirohisa Yamada , Masahito Konishi
- 申请人地址: JP Osaka JP Ibaraki
- 专利权人: Sharp Kabushiki Kaisha,Memory-Tech Corporation
- 当前专利权人: Sharp Kabushiki Kaisha,Memory-Tech Corporation
- 当前专利权人地址: JP Osaka JP Ibaraki
- 代理机构: Keating & Bennett, LLP
- 优先权: JP2010-134198 20100611
- 国际申请: PCT/JP2011/063405 WO 20110610
- 国际公布: WO2011/155608 WO 20111215
- 主分类号: G11B7/24
- IPC分类号: G11B7/24
摘要:
An optical information recording medium has a first information recording layer (20) and a second information recording layer (40) each of which includes (i) a group of pre-pits (31, 51) constituting marks (32, 52) and spaces (33, 53) and (ii) a super-resolution film (23, 43), the marks (32, 52) and the spaces (33, 53) having different lengths, an average length of a smallest mark that is smallest in length and a smallest space that is smallest in length being less than or equal to a resolution limit of a reproduction optical system for reproducing information recorded on the first information recording layer (20) and the second information recording layer (40), the group of pre-pits (31, 51) being formed so that a push-pull signal for the reproduction optical system to reproduce the information recorded by the group of pre-pits is negative in polarity. This provides an inexpensive and high-capacity multilayer optical information recording medium based on a super-resolution technology.
公开/授权文献
- US20130142029A1 OPTICAL INFORMATION RECORDING MEDIUM 公开/授权日:2013-06-06
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