发明授权
US07826319B2 Optical disc record medium, disc production method, recording apparatus
失效
光盘记录介质，光盘制作方法，记录装置
- 专利标题： Optical disc record medium, disc production method, recording apparatus
- 专利标题（中）： 光盘记录介质，光盘制作方法，记录装置
-
申请号： US11558651申请日： 2006-11-10
-
公开(公告)号： US07826319B2公开(公告)日： 2010-11-02
- 发明人: Masanobu Yamamoto , Hiroshi Kawase , Seiji Kobayashi
- 申请人： Masanobu Yamamoto , Hiroshi Kawase , Seiji Kobayashi
- 申请人地址： JP Tokyo JP Tokyo
- 专利权人： Sony Corporation,START Lab Inc.
- 当前专利权人： Sony Corporation,START Lab Inc.
- 当前专利权人地址： JP Tokyo JP Tokyo
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权： JP2005-329237 20051114
- 主分类号： G11B7/24
- IPC分类号： G11B7/24
摘要：
A guide groove is formed without wobbles. The guide groove is periodically modulated with its width. Encrypted data are recorded with marks formed on the record film along the guide groove. Information recorded by periodically modulating the guide groove with its width can be accurately detected by a band pass filter. Thus, rotation control information and address information can be stably reproduced. In addition, since the guide groove is formed without wobbles, a drive device having a pirated disc determination mechanism can reproduce encrypted content as with a ROM disc.