发明授权
- 专利标题： Information recording apparatus, information reproducing apparatus, and information distribution system
- 专利标题（中）： 信息记录装置，信息再现装置和信息分发系统
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申请号： US10227853申请日： 2002-08-27
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公开(公告)号： US07747871B2公开(公告)日： 2010-06-29
- 发明人: Toru Kambayashi , Koichiro Akiyama , Shuichi Tsujimoto , Kazuo Sumita , Hideki Hirakawa , Toshihiro Sugaya
- 申请人： Toru Kambayashi , Koichiro Akiyama , Shuichi Tsujimoto , Kazuo Sumita , Hideki Hirakawa , Toshihiro Sugaya
- 申请人地址： JP Kawasaki-shi
- 专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人地址： JP Kawasaki-shi
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权： JP9-122511 19970513; JP10-016618 19981029
- 主分类号： G06F11/30
- IPC分类号： G06F11/30 ; G06F12/14
摘要：
An information recording apparatus comprises an encryption section encrypting contents information and also a license condition referred to to limit use of the contents information and a decoding key for decoding the encrypted contents information to generate license information, and a recording section recording the encrypted contents information and the generated license information on a recording medium. An information reproducing apparatus comprises a decoder unit decoding the license information recorded on the recording medium using a second decoding key for decoding the license information and deciding on the basis of the license condition contained in the decoded license information whether the contents information can be used. If it is decided that the contents information can be used, the encrypted contents information recorded on the recording medium is decoded using the first decoding key contained in the decoded license information.