Invention Grant
- Patent Title: Content distribution server and content playback control terminal
- Patent Title (中): 内容分发服务器和内容播放控制终端
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Application No.: US10576952Application Date: 2004-10-25
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Publication No.: US08108936B2Publication Date: 2012-01-31
- Inventor: Toru Kawaguchi , Yutaka Saito
- Applicant: Toru Kawaguchi , Yutaka Saito
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP2003-366604 20031027; JP2004-308807 20041022
- International Application: PCT/JP2004/015807 WO 20041025
- International Announcement: WO2005/041576 WO 20050506
- Main IPC: G06F7/04
- IPC: G06F7/04
Abstract:
In the present invention, a content distribution server distributes a content key, encrypted content encrypted using the content key, and playback control information describing a playback mode restriction for a specific section of content, to a content playback terminal, and the content playback terminal refers to the playback control information, and decodes and plays back encrypted content in the case of a playback mode in which the specific section of content is not restricted. By this means, the playback mode of a specific section of content can be restricted based on playback control information.
Public/Granted literature
- US20070079380A1 Content distribution server and content playback control terminal Public/Granted day:2007-04-05
Information query
