发明授权
- 专利标题: Scalable, error resilient DRM for scalable media
- 专利标题(中): 可伸缩的,具有弹性的DRM可扩展媒体
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申请号: US10405973申请日: 2003-04-01
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公开(公告)号: US07313814B2公开(公告)日: 2007-12-25
- 发明人: Bin Zhu , Chun Yuan , Shipeng Li
- 申请人: Bin Zhu , Chun Yuan , Shipeng Li
- 申请人地址: US WA Redmond
- 专利权人: Microsoft Corporation
- 当前专利权人: Microsoft Corporation
- 当前专利权人地址: US WA Redmond
- 代理机构: Lee & Hayes, PLLC
- 主分类号: G06F15/16
- IPC分类号: G06F15/16 ; G06F17/30 ; G06F7/04 ; G06F7/58 ; G06F19/00 ; G06F9/00 ; H04L9/32
摘要:
An exemplary digital rights management engine and related methods divides multimedia content into service level layers, encrypts at least some of the layers, and offers access to the encrypted layers by permission. The multimedia content may be layered using multiple different layering approaches simultaneously, and access to the different types of layers may be offered simultaneously. One of the layers may be left unencrypted to allow free browsing of a low quality service level. An exemplary system of key management for digital rights management is also disclosed.
公开/授权文献
- US20040196972A1 Scalable, error resilient DRM for scalable media 公开/授权日:2004-10-07