Appeal No. 2003-1329
Application No. 09/131,386
a distribution center for distributing said digital contents
and receiving requests for a different degree of access to said
digital contents;
at least one user terminal that receives said digital
contents; and
an information transmission medium that interconnects said
author terminal, said copyright manager, said distribution center
and said user terminal,
wherein said author terminal comprises link means for
generating a first logic scheme for verification and execution
control of said digital contents, said link means linking said
first logic scheme with said digital contents,
wherein said copyright manager comprises a logic conversion
software generator generating logic conversion software including
a second logic scheme in accordance with specifications of said
second logic scheme transmitted from said distribution center for
replacing said first logic scheme with said second logic scheme
upon execution by said user terminal, the second logic scheme
providing the user terminal with a different degree of access to
the digital contents than the first logic scheme, thereby
precluding said distribution center from changing the degree of
access to the digital contents granted to the user terminal
without first receiving said logic conversion software from said
copyright manager, and
wherein said distribution center comprises generating means
for generating said specifications of said second logic scheme
when said distribution center receives a request for a different
degree of access to said digital contents, and an evaluator for
comparing said second logic scheme, included in said conversion
software transmitted from said copyright manager, with said
specifications of said second logic scheme, generated in said
distribution center, to verify said second logic scheme, and
wherein said distribution center provides said user terminal with
at least part of said conversion software and said digital
contents linked with said first logic scheme and said conversion
software, via said information transmission medium.
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Last modified: November 3, 2007