Google Inc.

Motorola Mobility LLC

Owen Michael Means

Paul Richard Osborne

Sean Joseph Higgins

Anton Koukine

A method includes: receiving a blacklist identifying piracy threatening items that pose a piracy threat such that, if installed and active with playback of the digital media content on the client, the piracy threatening items facilitate unauthorized use of the digital media content, the piracy threatening items on the blacklist having associated priority values; identifying first and second subsets of piracy threatening items in the blacklist responsive to the associated priority values; determining whether one or more piracy threatening items associated with the first subset are present on the client; performing a DRM transaction provisioning the digital media content for playback responsive to determining that no piracy threatening items associated with the first subset are present on the client; and determining whether to play back the digital media content responsive to determining whether one or more piracy threatening items associated with the second subset are present on the client.

System and method for preventing unauthorized use of digital media

A method for protecting digital media content from unauthorized use on a client, is described. The method comprising the steps of receiving from a server on the client a list of processes, instructions, activity descriptions or data types that must not be active simultaneously with playback of the digital media content ('the blacklist'). The method further comprising checking, on the client, for the presence of any items on the list; and continuing interaction with the server, key management and playback of protected content only if no items on the list are detected on the client. A system is also described.

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Auckland, New Zealand

Owen Michael Means