发明名称 |
System for controlling the distribution and use of digital works using digital tickets |
摘要 |
<p>A system for controlling the distribution and use of digital works (101) using digital tickets. In the present invention, a "digital ticket" is used to entitle the ticket holder to exercise some usage right (102) 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 digital works usage rights (105) when usage of a digital work is requested by a requesting repository (103,104). 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. <IMAGE></p> |
申请公布号 |
EP1293861(A3) |
申请公布日期 |
2003.06.04 |
申请号 |
EP20020028102 |
申请日期 |
1995.11.23 |
申请人 |
CONTENTGUARD HOLDINGS, INC. |
发明人 |
STEFIK, MARK J.;PIROLLI, PETER L. |
分类号 |
G06F12/00;G06F1/00;G06F21/10;G06F21/60;G06F21/62;G06Q20/00;G06Q30/00;G06Q30/06;G09C1/00;H04L9/32;H04L12/14;H04L29/06;H04L29/12;H04N7/16;H04N7/24;H04N21/234;H04N21/254;H04N21/2543;H04N21/266;H04N21/4627;H04N21/6332;H04N21/6377;H04N21/835;H04N21/8355;(IPC1-7):G06F1/00 |
主分类号 |
G06F12/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|