发明授权
- 专利标题： Copy protection using detailed copy control information
- 专利标题（中）： 复制保护使用详细的复制控制信息
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申请号： US09719708申请日： 2000-04-17
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公开(公告)号： US06978377B1公开(公告)日： 2005-12-20
- 发明人: Tomoyuki Asano , Yoshitomo Osawa , Teruyoshi Komuro , Ichiro Hamada
- 申请人： Tomoyuki Asano , Yoshitomo Osawa , Teruyoshi Komuro , Ichiro Hamada
- 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
- 代理机构： Frommer Lawrence & Haug LLP
- 代理商 William S. Frommer; Darren M. Simon
- 优先权： JP11-110111 19990416
- 国际申请： PCT/JP00/02494 WO 20000417
- 国际公布： WO00/63905 WO 20001026
- 主分类号： G06F21/10
- IPC分类号： G06F21/10 ; G11B20/00 ; H04L12/40 ; H04L12/64 ; G06F12/14
摘要：
Based on the detailed reproduction control information defining the reproduction control state of data to be transmitted, the CPU 12 of the data transmission apparatus creates a simplified reproduction control information roughly defining the reproduction control state of the data, stores the simplified reproduction control information of the data in the packet header of a data packet carrying the data, stores the detailed reproduction control information in the data, and transmits the simplified reproduction control information and the detailed reproduction control information as well as the data to the data receiving apparatus 20 through the transmission channel 30 from the input-output interface 16. The CPU 22 of the data receiving apparatus 20 analyses the reproduction control state of the data contained in the data packet based on the simplified reproduction information and the detailed reproduction information contained in the data packet, and controls the reproduction of the data by the action of the media access part 26 according to the analysis result.
信息查询
