Invention Grant
- Patent Title: Optical recording medium and optical recording-reading method
- Patent Title (中): 光学记录介质和光学记录读取方法
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Application No.: US13032242Application Date: 2011-02-22
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Publication No.: US08213279B2Publication Date: 2012-07-03
- Inventor: Atsuko Kosuda , Motohiro Inoue , Takashi Kikukawa , Hideki Hirata
- Applicant: Atsuko Kosuda , Motohiro Inoue , Takashi Kikukawa , Hideki Hirata
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Porzio, Bromberg & Newman, P.C.
- Priority: JP2010-035811 20100222
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
An optical recording medium including recording and reading layers and a servo layer increases the recording capacity thereof. In the optical recording medium including the plurality of recording and reading layers and the servo layer, the servo layer has a groove and a land that can be used to perform tracking control with a long-wavelength servo beam. Information is recorded on the recording and reading layers with a recording and reading beam having a wavelength shorter than the wavelength of the servo beam. Recording marks are formed on the recording and reading layers while both the groove and land are tracked.
Public/Granted literature
- US20110205870A1 OPTICAL RECORDING MEDIUM AND OPTICAL RECORDING-READING METHOD Public/Granted day:2011-08-25
Information query
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