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:
Mar. 26, 2013

Filed:

Jul. 26, 2005
Applicants:

Tetsuro Moriwaki, Saitama, JP;

Keiichi Hibi, Matsudo, JP;

Inventors:

Tetsuro Moriwaki, Saitama, JP;

Keiichi Hibi, Matsudo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 12/66 (2006.01); H04W 4/00 (2009.01); H04W 36/00 (2009.01); H04M 3/42 (2006.01);
U.S. Cl.
CPC ...
Abstract

A smooth and seamless terminal switching guaranteeing continuity of communication at an application level is realized. A call control part for setting and managing a physical and logical transmission path between communication terminals, a session management part for managing establishment of data communication between the communication terminals, and a switching request processing unit for controlling interruption and resumption of a session are provided, wherein the switching request processing unit exercises a function to temporarily interrupt a session after receiving a session switching request signal from a communication terminal, a function to instruct the call control part to establish a call connection with a switch destination communication terminal, a function to establish a session with an application on the switch destination communication terminal, and a function to resume, after establishing the session, a session with a communication terminal of an opposite side.


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