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:
Nov. 27, 2012

Filed:

May. 12, 2009
Applicants:

Hideyuki Nagasawa, Yokohama, JP;

Yusuke Saito, Kawasaki, JP;

Kohei Sato, Tokyo, JP;

Inventors:

Hideyuki Nagasawa, Yokohama, JP;

Yusuke Saito, Kawasaki, JP;

Kohei Sato, Tokyo, JP;

Assignee:

NTT DoCoMo, Inc., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

To provide a mobile terminal apparatus capable of suppressing exhaustion of the battery while securing convenience of switching to a communication system corresponding to an existing area, and a control method and communication system for the apparatus, a mobile terminal apparatusis driven by power supply from a battery, capable of communicating with each of a plurality of communication systems, monitors a communication environment with each of the communication systems, and has a detecting section that detects a battery remaining amount of the battery, and a control sectionthat limits targets to monitor when the battery remaining amount falls below a first threshold.


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