Data processing: financial – business practice – management – or co – Business processing using cryptography
Reexamination Certificate
2005-05-24
2005-05-24
Trammell, James P. (Department: 3621)
Data processing: financial, business practice, management, or co
Business processing using cryptography
C705S051000, C705S052000, C705S054000, C705S056000, C705S057000, C705S058000, C705S059000, C707S793000, C700S237000
Reexamination Certificate
active
06898576
ABSTRACT:
A system for controlling the distribution and use of digital works using digital tickets. In the present invention, a “digital ticket” is used to entitle the ticket holder to exercise some usage right with respect to a digital work. Usage rights are used to define how a digital work may be used or distributed. Each usage right may specify a digital ticket which must be present before the right may be exercised. Digital works are stored in repositories which enforce a digital works usage rights. Each repository has a “generic ticket agent” which punches tickets. In some instances only the generic ticket agent is necessary. In other instances, punching by a “special ticket agent” residing on another repository may be needed.
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Pirolli Peter L.
Stefik Mark J.
Abdi Kambiz
ContentGuard Holdings Inc.
Kaufman Marc S.
Nixon & Peabody LLP
Trammell James P.
LandOfFree
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