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.

Date of Patent:
Oct. 15, 2013

Filed:

Feb. 12, 2009
Applicant:

Shoji Mori, Tokyo, JP;

Inventor:

Shoji Mori, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 15/173 (2006.01);
U.S. Cl.
CPC ...
Abstract

In order to detect a fraudulent action, such as an attempt of invalidating a result of a match-up through a communication in a communication match-up game by changing the setting of a router device, in a communication system, a first terminal device and a second terminal device each attempts to communicate with the terminal device of a communication counterparty. When such attempt has failed, those terminal devices each attempts to communicate with a router device used by the local terminal device of the communication counterparty, and results of these communication attempts are specified in connection information status and the connection information status is transmitted to a server device. The server device receives the connection information status, and checks a communication status between the first terminal device and the second terminal device, between the second terminal device and a first router device which is connected to the first terminal device, and a communication status between the first terminal device and a second router device which is connected to the second terminal device, and determines, based on the fact that communicable routes are asymmetric, the presence/absence of a fraudulent action by a user using the terminal device.


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