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:
Aug. 17, 2010

Filed:

Feb. 26, 2007
Applicants:

Motohisa Araki, Akishima, JP;

Kenichi Kitazawa, Hino, JP;

Inventors:

Motohisa Araki, Akishima, JP;

Kenichi Kitazawa, Hino, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/16 (2006.01);
U.S. Cl.
CPC ...
Abstract

According to one embodiment, a communication system includes a first terminal to be connected to a first communication network, assigned a terminal ID and driven by power supplied from a battery, a server apparatus to be connected to a second communication network differing from the first network, to periodically confirm presences of the first terminal and a second terminal to be connected to the second communication network, and to communication-connect between the first and the second terminals in the case of presences thereof, and a controller which makes the server apparatus monitor that the first terminal is present on the first communication network by a second period longer than a first period monitoring that the second terminal is present on the second communication network.


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