Invention Grant
US07958369B2 Systems and methods for multiple level control of access of privileges to protected media content 有权
用于多层次控制受保护媒体内容的访问权限的系统和方法

Systems and methods for multiple level control of access of privileges to protected media content
Abstract:
Systems and methods for multiple level control of access privileges to protected media content are disclosed. In one embodiment, first data is associated with media content. Different versions of the media content are produced using the first data. Each of the different versions include one or more portions of the media content. The one or more portions are selected using the first data. Second data is associated with the different versions. The second data identifies respective protection attributes used to encrypt the different versions. The respective protection attributes correspond to respective keys that provide respective levels of access to the media content.
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