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    • 9. 发明申请
    • OPTICAL INFORMATION RECORDING MEDIUM
    • 光信息记录介质
    • US20150055445A1
    • 2015-02-26
    • US14533378
    • 2014-11-05
    • Sharp Kabushiki KaishaMemory-Tech Corporation
    • Hideharu TAJIMAGo MORIYasuhiro HARADAMasaki YAMAMOTOHirohisa YAMADAMasahito KONISHI
    • G11B7/013G11B7/24038
    • G11B7/005G11B7/00745G11B7/013G11B7/24038G11B7/24085G11B7/24088G11B7/261G11B20/1012G11B2007/0013G11B2007/0133
    • 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.
    • 光信息记录介质具有第一信息记录层(20)和第二信息记录层(40),每个信息记录层包括:(i)一组构成标记(32,52)的预凹坑(31,51)和空间 (33,53)和(ii)超分辨率胶片(23,43),所述标记(32,52)和所述空间(33,53)具有不同的长度,最小标记的平均长度在 长度和长度最小的最小空间小于或等于用于再现记录在第一信息记录层(20)和第二信息记录层(40)上的信息的再现光学系统的分辨率限制,该组 形成预凹坑(31,51),使得用于再现光学系统的推挽信号再现由该凹坑组记录的信息的极性是负的。 这提供了基于超分辨率技术的便宜且大容量的多层光学信息记录介质。