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:
May. 01, 2012

Filed:

Mar. 03, 2011
Applicant:

Yue Zhang, Tokyo, JP;

Inventor:

Yue Zhang, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 88/02 (2009.01);
U.S. Cl.
CPC ...
Abstract

A communication device communicates with another communication device via an information managing device. The communication device includes a transmitter unit, a storage unit, and a control unit. The transmitter unit transmits presence information to the other communication device via the information managing device. The storage unit stores a program. If the communication device executes the program, the control unit judges whether the presence information currently registered needs to be changed based on executing the program. If the control unit judges that the presence information currently registered needs to be changed, the control unit changes the presence information based on executing the program. The control unit controls the transmitter unit to transmit the changed presence information as updated presence information to the other communication device via the information managing device.


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