Information security – Prevention of unauthorized use of data including prevention... – Limitations on number or amount of copies
Reexamination Certificate
2007-08-28
2007-08-28
Song, Hosuk (Department: 2135)
Information security
Prevention of unauthorized use of data including prevention...
Limitations on number or amount of copies
C380S200000, C380S201000
Reexamination Certificate
active
10405369
ABSTRACT:
The present invention provides a method and an apparatus that, when a copying is limited as “Copy One Generation”, prevent the copying from being made into infinite number of storage media without limitation, and thereby protect the profit of a copyright holder concerned.In the present invention, when outputting digital information whose copying is limited to external appliances connected to plural outputting circuits (315A,315B, or72A to72D), the total number of external appliances to which the digital information is to be outputted is limited within a predetermined constant. In particular, a control circuit (311, or73) limits the number in which to perform authentications of the external appliances connected to the plural outputting circuits. This makes it possible to limit, within the predetermined constant, the total number of the external appliances to which the digital information is to be outputted.
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Aikawa Makoto
Kudo Yoshimichi
Okamoto Hiroo
Owashi Hitoaki
Yoshioka Atsushi
Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
Song Hosuk
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