Invention Grant
- Patent Title: Information recording medium and information recording device and method
- Patent Title (中): 信息记录介质和信息记录装置及方法
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Application No.: US10577439Application Date: 2005-06-06
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Publication No.: US07791997B2Publication Date: 2010-09-07
- Inventor: Shoji Taniguchi , Eiji Muramatsu , Toshio Suzuki , Masahiro Kato , Kazuo Kuroda , Kunihiko Horikawa
- Applicant: Shoji Taniguchi , Eiji Muramatsu , Toshio Suzuki , Masahiro Kato , Kazuo Kuroda , Kunihiko Horikawa
- Applicant Address: JP Tokyo
- Assignee: Pioneer Corporation
- Current Assignee: Pioneer Corporation
- Current Assignee Address: JP Tokyo
- Agency: Young & Thompson
- Priority: JP2004-172529 20040610
- International Application: PCT/JP2005/010340 WO 20050606
- International Announcement: WO2005/122159 WO 20051222
- Main IPC: G11B5/00
- IPC: G11B5/00

Abstract:
An information recording medium includes: a first recording layer to for recording first information; and one or a plurality of second recording layers, disposed on the first recording layer, for recording second information. Each recording layer has a predetermined area in which power calibration is performed to detect an optimum recording power of laser light for recording, which is transmitted through the first recording layer and other layers of the second recording layers, the first recording layer, the other layers of the second recording layers, and each of the second recording layers arranged in this order as viewed from an irradiation side of the laser light, and in a facing area, which faces the predetermined area, in the other layers of the second recording layers and the first recording layer, by forming embossed pits.
Public/Granted literature
- US20070121449A1 Information recording medium and information recording device and method Public/Granted day:2007-05-31
Information query