System for controlling the distribution and use of digital works using digital tickets
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United States of America Patent
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Sep 13, 2005
Issued Date -
N/A
app pub date -
Feb 7, 2001
filing date -
Nov 23, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
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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