发明授权
- 专利标题: Delivering enhanced multimedia content on physical media
- 专利标题(中): 在物理媒体上提供增强的多媒体内容
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申请号: US12417783申请日: 2009-04-03
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公开(公告)号: US07881476B2公开(公告)日: 2011-02-01
- 发明人: Jeffrey B. Lotspiech , Florian Pesoni
- 申请人: Jeffrey B. Lotspiech , Florian Pesoni
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Cantor Colburn LLP
- 主分类号: H04L9/00
- IPC分类号: H04L9/00
摘要:
Enhanced multimedia content on physical media interacts with the user through a media player and the Internet. Enhanced multimedia utilizes IDs for pieces of content on the media and a media key block. On the enhanced media is a file with a list of URLs. As the enhanced media plays a section requiring a set of keys for decryption, the media player accesses the URL for that section and obtains the decryption key. The decryption key may be purchased or provided for free. Secure encryption and transmission of these keys is accomplished by broadcast encryption using a media key block. Each media has a unique set of keys that allow the media player to process the media key block; however, each media follows a unique path through the media key block. All legitimate media players obtain the media key; circumvention devices cannot decipher the media key block.
公开/授权文献
- US20090185688A1 DELIVERING ENHANCED MULTIMEDIA CONTENT ON PHYSICAL MEDIA 公开/授权日:2009-07-23
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