The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 10, 2009
Filed:
Dec. 12, 2005
Masao Nonaka, Osaka, JP;
Toshihisa Nakano, Osaka, JP;
Yuichi Futa, Osaka, JP;
Motoji Ohmori, Osaka, JP;
Takeshi Gomi, Tokyo, JP;
Kazukuni Kobara, Tokyo, JP;
Hideki Imai, Kanagawa, JP;
Masao Nonaka, Osaka, JP;
Toshihisa Nakano, Osaka, JP;
Yuichi Futa, Osaka, JP;
Motoji Ohmori, Osaka, JP;
Takeshi Gomi, Tokyo, JP;
Kazukuni Kobara, Tokyo, JP;
Hideki Imai, Kanagawa, JP;
Panasonic Corporation, Osaka, JP;
The University of Tokyo, Tokyo, JP;
Abstract
An unauthorized apparatus detection device detecting clones of a playback device. In a management server, a reception processing unit acquires a user terminal identifier and a first random number of a user terminal, judges whether a second management server random number, which is stored in a storage unit in correspondence with the user terminal identifier, matches the first user terminal random number. If the two fail to match, a display unit displays a message indicating that a clone exists. If the two match, a terminal information generation unit generates a new random number, and writes the generated random number as the second random number in the storage unit. A transmission processing unit transmits the generated random number to the user terminal via a transmission/reception unit and the user terminal updates the first user terminal random number to the generated random number.