System and method for distributing digital works, apparatus and method for reproducing digital works, and computer program product
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Apr 21, 2009
Grant Date -
Dec 16, 2004
app pub date -
Apr 30, 2004
filing date -
Jul 29, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An editing apparatus generates a capsular work with usage conditions for each of plural usages and usage secret information. A ticket server apparatus issues a ticket containing a ticket key in the case of allowing a user to practice the usage requested by the user. A distribution center apparatus distributes the capsular work in accordance with the user's request. An audiovisual apparatus acquires the capsular work from the distribution center apparatus and requests the ticket necessary to make use of the capsular work from the ticket server apparatus, and then decrypts the encrypted work data contained in the capsular work and reproduces the work data only in the case where the audiovisual apparatus has acquired the ticket.
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