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. 30, 2016

Filed:

Dec. 07, 2010
Applicants:

Hirofumi Ueda, Tokyo, JP;

Norihito Fujita, Tokyo, JP;

Inventors:

Hirofumi Ueda, Tokyo, JP;

Norihito Fujita, Tokyo, JP;

Assignee:

NEC CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04W 28/06 (2009.01); H04W 4/00 (2009.01); H04W 68/00 (2009.01); H04W 92/18 (2009.01);
U.S. Cl.
CPC ...
H04W 28/06 (2013.01); H04W 4/00 (2013.01); H04W 68/00 (2013.01); H04W 92/18 (2013.01);
Abstract

An information sharing system is provided with multiple communication devices that wirelessly connect with other communication devices in order to communicate with them without going through an access point. Each communication device has: an internal deduction portion that, using a reception history of notification messages received from the other communication devices, deduces which information is currently being held by each of the other communication devices; a duplication determination portion that determines whether or not the information that is currently being held by another communication device and that was deduced by the internal deduction portion matches information held by its own host device; and an information exchange portion that, when the duplication determination portion determines that the information does not match, transmits a notification message that contains the information held by its own host communication device.


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