Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2007-03-06
2007-03-06
Peikari, B. James (Department: 2189)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S152000, C711S164000, C705S057000, C713S156000
Reexamination Certificate
active
10649890
ABSTRACT:
A highly-convenient content duplication management system for allowing users to duplicate a content as long as the duplication is in compliance with a given usage right. In the system, a request destination device stores a content and a permitted number of duplications of the content. In response to a duplication request, the request destination device judges whether or not the request source device is an in-group device that belongs to the same group as the request destination device. When judging that the request source device is an in-group device, the request destination device transmits the content together with a permitted number that is equal to or smaller than the currently stored permitted number. The request destination device then updates the currently stored permitted number by subtracting the permitted number transmitted.
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Abe Toshihisa
Matsuzaki Natsume
Miyazaki Masaya
Ohta Yuusaku
Yamauchi Hiroki
Matsushita Electric - Industrial Co., Ltd.
Peikari B. James
Wenderoth , Lind & Ponack, L.L.P.
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