Invention Grant
- Patent Title: System and method for controlled copying and moving of content between devices and domains based on conditional encryption of content key depending on usage state
- Patent Title (中): 基于使用状态的内容密钥的条件加密来控制复制和移动设备和域之间的内容的系统和方法
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Application No.: US12199365Application Date: 2008-08-27
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Publication No.: US07844821B2Publication Date: 2010-11-30
- Inventor: Jukka Alve , Peter K. Chiu , Zheng Yan , Juha Hietasarka
- Applicant: Jukka Alve , Peter K. Chiu , Zheng Yan , Juha Hietasarka
- Applicant Address: FI Espoo
- Assignee: Nokia Corporation
- Current Assignee: Nokia Corporation
- Current Assignee Address: FI Espoo
- Agency: Locke Lord Bissell & Liddell LLP
- Main IPC: H04L9/32
- IPC: H04L9/32

Abstract:
A system and method is disclosed for allowing content providers to protect against widespread copying of their content, while enabling them to give their customers more freedom in the way they use the content. In accordance with one embodiment, content providers identify their content as protected by watermarking the content. Consumers use compliant devices to access protected content. All of a user's compliant devices, or all of a family's devices, can be organized into an authorized domain. This authorized domain is used by content providers to create a logical boundary in which they can allow users increased freedom to use their content.
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Information query