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US 2006/0235798 A1Published application
Output protection levels
AssigneeMicrosoft Corporation
InventorsJames Alkove, Clifford Strom, Benjamin Cutter, Brian Evans
Life of this patent
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Abstract
A system of controlling playback of digital media. A system of controlling playback of digital media comprising a CE device having an output path and a license having a specified output protection level disposed upon the CE device in which the specified output protection level controls playback of the digital media over the output path.
Claims19
A system of controlling playback of digital media comprising:
- a CE device having an output path;
- and
- a license having a specified output protection level disposed upon the CE device in which the specified output protection level controls playback of the digital media over the output path.
A method of controlling playback of a media file in a CE device comprising:
- setting an output protection level in a license controlling playback of the media file;
- applying the output protection level to a playback policy;
- determining output type present on the CE device;
- and
- comparing the output protection level to the output type.
2 more elements
A computer memory product having stored thereon a digital data file, the memory product comprising:
- a computer readable memory;
- and
- a license data file including:
- at least two digital data portions;
- a first digital data portion containing data representing licensing information identifying a media file licensed and providing information to allow secure transmission of the media file;
- and
- a second digital portion containing data indicating a permissible output protection level wherein the license data file provides for secure transmission of the media file over a network, and secure playback on an external component.
4 more elements
Dependencies are inferred from the claim text.