发明授权
US06687213B1 Optical recording medium having pre-formed land-prepits and method for producing same
有权
具有预形成的预置凹坑的光记录介质及其制造方法
- 专利标题： Optical recording medium having pre-formed land-prepits and method for producing same
- 专利标题（中）： 具有预形成的预置凹坑的光记录介质及其制造方法
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申请号： US09544547申请日： 2000-04-06
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公开(公告)号： US06687213B1公开(公告)日： 2004-02-03
- 发明人: Toshihiko Takishita , Masahiro Kato , Eiji Muramatsu , Kunihiko Horikawa , Shoji Taniguchi , Atsushi Yamaguchi
- 申请人： Toshihiko Takishita , Masahiro Kato , Eiji Muramatsu , Kunihiko Horikawa , Shoji Taniguchi , Atsushi Yamaguchi
- 优先权： JP11-101466 19990408
- 主分类号： G11B724
- IPC分类号： G11B724
摘要：
An optical recording medium which can produce a read signal free from waveform distortion during reproduction of information. The optical recording medium comprises groove information tracks on which information pits carrying information data is to be formed, and prepit tracks provided with a plurality of previously formed land prepits connected to the groove information tracks. The groove information tracks and the prepit tracks are arranged in alternation. The groove information track has a track width smaller in at least a part of each of sections in which the land prepit exists than in sections in which no land prepit exists.
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