发明授权
US07092350B2 Optical reproducing method for optical medium with aligned prepit portion
有权
具有对准预凹坑部分的光学介质的光学再现方法
- 专利标题: Optical reproducing method for optical medium with aligned prepit portion
- 专利标题(中): 具有对准预凹坑部分的光学介质的光学再现方法
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申请号: US11178442申请日: 2005-07-12
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公开(公告)号: US07092350B2公开(公告)日: 2006-08-15
- 发明人: Harukazu Miyamoto , Hirofumi Sukeda , Motoyasu Terao , Hiroyuki Minemura , Tetsuo Andou
- 申请人: Harukazu Miyamoto , Hirofumi Sukeda , Motoyasu Terao , Hiroyuki Minemura , Tetsuo Andou
- 申请人地址: JP Tokyo JP Ibaraki
- 专利权人: Hitachi, Ltd.,Hitachi Maxell, Ltd.
- 当前专利权人: Hitachi, Ltd.,Hitachi Maxell, Ltd.
- 当前专利权人地址: JP Tokyo JP Ibaraki
- 代理机构: Antonelli, Terry, Stout and Kraus, LLP.
- 优先权: JP7-024949 19950214; JP7-270872 19951019; JP7-300961 19951120
- 主分类号: G11B7/24
- IPC分类号: G11B7/24
摘要:
A reproducing method for reproducing information from an optical recording medium having an aligned prepit portion straddled on a plurality of tracks in a radial direction, the prepit portion including first and second prepit portions divided in a track direction and arranged on a boundary line of the respective tracks. The first and second prepit portions each have address information prepits arranged at every two-track pitch in the radial direction, and the address information prepit of the first and second prepit portions are arranged with one track displaced in the radial direction. A trailing end of an end prepit of the first prepit portion is aligned with the radial direction. The method includes irradiating an optical spot on the medium, detecting a reflected beam from the medium, and reproducing information on the medium by using a signal obtained by the reflected beam.
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