Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate
2005-08-12
2008-12-09
Cheung, Mary (Department: 3694)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Usage protection of distributed data files
C707S793000, C726S002000
Reexamination Certificate
active
07464058
ABSTRACT:
Dynamic assignment of rights to content, such as in a closed distribution system. Noting state information generated by an item of current content, and modifying state or rights of new content in response. Preloading or dynamically sending new content to the owner of the current content, with rights being enabled only at a later time, in the playback device, with predetermined conditions. In response to current state information, dynamically sending a license for new content from a server. Conditional or dynamic licenses to new content, including a set of rights associated with a class of possible sets of state information. Assignment of limited rights to a content, with support in a secure player to enforce them; for purposes of rental, bonus content, trials and other business models.
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Tygar, J.D., et
Blythe David
Princen John
Srinivasan Pramila
Yen Wei
BroadOn Communications Corp.
Cheung Mary
Perkins Coie LLP
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