发明申请
- 专利标题: INFORMATION RECORDING DEVICE, INFORMATION REPRODUCING DEVICE, RECORDING MEDIUM MANUFACTURING DEVICE, INFORMATION RECORDING MEDIUM, METHOD, AND PROGRAM
- 专利标题(中): 信息记录装置,信息再现装置,记录介质制造装置,信息记录介质,方法和程序
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申请号: US13382322申请日: 2010-06-30
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公开(公告)号: US20120147723A1公开(公告)日: 2012-06-14
- 发明人: Yoshiyuki Kajiwara , Shoei Kobayashi
- 申请人: Yoshiyuki Kajiwara , Shoei Kobayashi
- 申请人地址: JP Tokyo
- 专利权人: SONY CORPORATION
- 当前专利权人: SONY CORPORATION
- 当前专利权人地址: JP Tokyo
- 优先权: JP2009-165145 20090713
- 国际申请: PCT/JP2010/061158 WO 20100630
- 主分类号: G11B20/18
- IPC分类号: G11B20/18
摘要:
An information recording processing constitution realizing both readout difficulty and high-precision readout is provided. Superimposition recording of highly secret additional information such as a cryptographic key in a groove signal recorded on a disk, which superimposition recording realizes both readout difficulty and high-precision readout, can be performed. The groove signal to which a phase error corresponding to a bit value is set is recorded at a time of recording of the additional information, and at a time of readout of the additional information, the phase error of the groove signal in a predetermined section is subjected to an integrating process and the direction of the phase error of the groove signal within each section is determined. The recording and reproduction of the additional information for increasing readout difficulty and realizing high-precision readout is realized by such processes.
公开/授权文献
- US08570847B2 Recording medium manufacturing device and method 公开/授权日:2013-10-29
信息查询
IPC分类: