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US 2011/0154504 A1Published application
Management server device, content reproduction device, and recording medium
OwnerSenichi Onoda, Masaya Yamamotoinventors
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OwnerSenichi Onoda, Masaya Yamamotoinventors
Estimating the term…
When a technique for specifying an unauthorized terminal based on a combination of watermarks embedded in content distributed without authorization is applied to content distributed on recording media, recording capacity limits of the recording media lead to a limit on the number of combinations of watermarks that can be embedded in the content, and only a limited number of terminals can be specified. In the present invention, all terminals are sorted into the same number of groups as there are combinations of watermarks, and a group that includes an unauthorized terminal can be specified based on the combination of watermarks embedded in the content. When the group including the unauthorized terminal is specified, this group is divided into groups, and a plurality of groups that do not include the unauthorized terminal are integrated. This enables the unauthorized terminal to be specified while keeping within the capacity of the recording medium.
1-24. (canceled)
A management server apparatus that manages a plurality of terminal apparatuses that play a content, and, with use of groups to which the plurality of terminal apparatuses belong, specifies a terminal apparatus associated with unauthorized usage of the content, the unauthorized usage being unauthorized distribution, the management server apparatus comprising:
A management method used in a management server apparatus that manages a plurality of terminal apparatuses that play a content, and, with use of groups to which the plurality of terminal apparatuses belong, specifies a terminal apparatus associated with unauthorized usage of the content, the unauthorized usage being unauthorized distribution, the management server apparatus holding the plurality of groups to which the one or more terminal apparatuses belong, the management method comprising:
A non-transitory computer-readable recording medium having a management program recorded thereon, the management program being used in a computer that manages a plurality of terminal apparatuses that play a content, and, to which the plurality of terminal apparatuses belong, specifies a terminal apparatus associated with unauthorized usage of the content, the unauthorized usage being unauthorized distribution, the computer holding the plurality of groups to which the one or more terminal apparatuses belong, the management program causing the computer to execute a method comprising:
An integrated circuit that manages a plurality of terminal apparatuses that play a content, and, with use of groups to which the plurality of terminal apparatuses belong, specifies a terminal apparatus associated with unauthorized usage of the content, the unauthorized usage being unauthorized distribution, the integrated circuit comprising:
Dependencies are inferred from the claim text.