Electrical computers and digital processing systems: multicomput – Computer network managing – Computer network access regulating
Reexamination Certificate
2011-03-22
2011-03-22
Pwu, Jeffrey (Department: 2478)
Electrical computers and digital processing systems: multicomput
Computer network managing
Computer network access regulating
C709S227000, C380S277000
Reexamination Certificate
active
07912952
ABSTRACT:
A system estimates accessibility on the basis of information of a requesting device and digital rights management information of content when a utilization request of the content is raised through a network. In a device including a hard disk for storing a plurality of content files and having a networking function for transmitting the content file to other device, a utilization condition and a utilization state are so managed as to correspond to the content file and when a utilization request of a content file is made, utilizability of the content file is judged from a utilization object in the utilization request and from information of a transmitting device of the utilization request. When utilization is not judged as possible, a report is made to the transmitting device of the utilization request to the effect that the content file cannot be utilized.
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Mizutani Mika
Morino Harumi
Hitachi , Ltd.
Li Guang
McDermott Will & Emery LLP
Pwu Jeffrey
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