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US Patent 7975312 Token passing technique for media playback devices

Patent 7975312 was granted and assigned to Apple (company) on July, 2011 by the United States Patent and Trademark Office.

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Patent abstractTimelineTable: Further ResourcesReferences
Is a
Patent
Patent

Patent attributes

Current Assignee
Apple (company)
Apple (company)
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7975312
Patent Inventor Names
Jeffrey Robbin3
Augustin J. Farrugia3
Rod Schultz3
Rainer Broderson3
Date of Patent
July 5, 2011
Patent Application Number
11651339
Date Filed
January 8, 2007
Patent Citations Received
‌
US Patent 11870758 Systems and methods for application identification
1
‌
US Patent 11683304 Sharing access to a media service
2
‌
US Patent 11757866 Accessing a cloud-based service
Patent Primary Examiner
‌
Kambiz Zand
Patent abstract

A digital rights management (DRM) system for distribution of digital content such as audio or video uses a token passing scheme to enhance security of the content from unauthorized access and use, including access by unauthorized players. The token is requested from the central content or DRM server by a host device such as a user's computer, using security related information. The token is then passed to a media player associated with the host device, the token being encrypted using a key special to that particular player. Upon receipt of the token, the player transmits back to the server certain related security information confirming receipt of the token and in return receives keys for decryption of the associated digital content. In the absence of proper passing of the token, player access to the content, or further access to other content, is denied. This also allows the player to communicate directly with the server for obtaining the keys.

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