发明公开
EP1361495A3 Distribution system, distribution apparatus and reception apparatus for distributing digital contents having usage expiry
审中-公开
分配系统，分配设备，和用于分配数字内容到最终用户接收设备
- 专利标题： Distribution system, distribution apparatus and reception apparatus for distributing digital contents having usage expiry
- 专利标题（中）： 分配系统，分配设备，和用于分配数字内容到最终用户接收设备
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申请号： EP03010408.7申请日： 2003-05-08
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公开(公告)号： EP1361495A3公开(公告)日： 2009-06-03
- 发明人: Futa, Yuichi , Ohmori, Motoji , Tatebayashi, Makoto , Yamamoto, Masaya
- 申请人： Panasonic Corporation
- 申请人地址： 1006, Oaza Kadoma Kadoma-shi Osaka 571-8501 JP
- 专利权人： Panasonic Corporation
- 当前专利权人： Panasonic Corporation
- 当前专利权人地址： 1006, Oaza Kadoma Kadoma-shi Osaka 571-8501 JP
- 代理机构： Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät
- 优先权： JP2002134195 20020509
- 主分类号： G06F1/00
- IPC分类号： G06F1/00
摘要：
A reception apparatus includes a first timer and sends to a distribution apparatus a first date-time clocked by the first timer. The distributing apparatus includes a second timer, and generates expiry information based on a difference obtained by subtracting, from the first date-time, a second date-time that is clocked by the second timer. The expiry information is used to adjust a usage expiry date-time of a content. The reception apparatus judges whether playback of the content is permitted based on the first timer and the expiry information.
With this arrangement, unauthorized use of the content beyond the expiry date-time is prevented.
With this arrangement, unauthorized use of the content beyond the expiry date-time is prevented.
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