发明授权
- 专利标题: Systems and methods for playing back alternative streams of protected content protected using common cryptographic information
- 专利标题(中): 用于回放使用公共密码信息保护的受保护内容的备用流的系统和方法
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申请号: US13340623申请日: 2011-12-29
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公开(公告)号: US08909922B2公开(公告)日: 2014-12-09
- 发明人: Michael George Kiefer , Eric William Grab , Jason Braness
- 申请人: Michael George Kiefer , Eric William Grab , Jason Braness
- 申请人地址: US CA San Diego
- 专利权人: Sonic IP, Inc.
- 当前专利权人: Sonic IP, Inc.
- 当前专利权人地址: US CA San Diego
- 代理机构: KPPB LLP
- 主分类号: H04L29/06
- IPC分类号: H04L29/06 ; H04L9/08
摘要:
Systems and methods for performing adaptive bitrate streaming using alternative streams of protected content in accordance with embodiments of the invention are described. One embodiment of the invention includes a processor, and memory containing a client application. In addition, the client application configures the processor to: request a top level index file identifying a plurality of alternative streams of protected content, where each of the alternative streams of protected content are encrypted using common cryptographic information; obtain the common cryptographic information; request portions of content from at least the plurality of alternative streams of protected content; access the protected content using the common cryptographic information; and playback the content.
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