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.: US13330174Application Date: 2011-12-19
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Publication No.: US09014541B2Publication Date: 2015-04-21
- Inventor: Toru Kawaguchi , Yutaka Saito
- Applicant: Toru Kawaguchi , Yutaka Saito
- Applicant Address: US CA Torrance
- Assignee: Panasonic Intellectual Property Corporation of America
- Current Assignee: Panasonic Intellectual Property Corporation of America
- Current Assignee Address: US CA Torrance
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP2003-366604 20031027; JP2004-308807 20041022
- Main IPC: H04N9/80
- IPC: H04N9/80 ; H04N21/8355 ; H04N5/913 ; H04N7/167 ; H04N7/173 ; H04N21/2347 ; H04N21/433 ; H04N21/4405 ; H04N21/4627 ; H04N21/845
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
- US20120087639A1 CONTENT DISTRIBUTION SERVER AND CONTENT PLAYBACK CONTROL TERMINAL Public/Granted day:2012-04-12
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