发明名称 |
Information recording method |
摘要 |
An optical reproducing method using an optical medium having a disk-like substrate with plural levels associated with grooves, and a plurality of zones. Each track is divided into a plurality of recording and radially adjacent recording units of a respective zone are delimited by a pair of radial lines joined to form a central angle at an apex proximate to a center of the disk-like substrate. The grooves are wobbled in the radial direction of the disk-like substrate with a length of each recording unit being an integer multiple of a cycle of the wobble, and the integer multiple being the same for the different zones. An optical spot is irradiated on the optical medium, a reflected beam from the optical medium is detected, and information on the optical medium is reproduced by using a signal obtained by the reflected beam.
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申请公布号 |
US6728176(B2) |
申请公布日期 |
2004.04.27 |
申请号 |
US20030437306 |
申请日期 |
2003.05.14 |
申请人 |
HITACHI, LTD. |
发明人 |
MIYAMOTO HARUKAZU;SUZUKI YOSHIO;SUZUKI MOTOYUKI;SUGIYAMA HISATAKA;MINEMURA HIROYUKI;FUSHIMI TETSUYA;TOKUSHUKU NOBUHIRO |
分类号 |
G11B7/24;G11B5/09;G11B7/00;G11B7/0037;G11B7/004;G11B7/0045;G11B7/005;G11B7/006;G11B7/007;G11B7/013;G11B7/09;G11B19/20;G11B19/247;G11B19/28;G11B20/10;G11B20/12;G11B27/19;G11B27/24;G11B27/28;G11B27/30;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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