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:
Sep. 08, 2009

Filed:

Aug. 02, 2005
Applicants:

Atsushi Inoue, Tokyo, JP;

Masahiro Ishiyama, Tokyo, JP;

Atsushi Fukumoto, Tokyo, JP;

Yoshiyuki Tsuda, Tokyo, JP;

Inventors:

Atsushi Inoue, Tokyo, JP;

Masahiro Ishiyama, Tokyo, JP;

Atsushi Fukumoto, Tokyo, JP;

Yoshiyuki Tsuda, Tokyo, JP;

Assignee:

Kabushiki Kaisha Toshiba, Kawasaki-shi, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/56 (2006.01);
U.S. Cl.
CPC ...
Abstract

A mobile IP communication scheme for supporting a mobile computer moving over different address spaces is disclosed. A packet relay device for relaying packets having an address of the mobile computer device as a destination or source is provided at a border between a private address space and a global address space, where the packet relay device has a packet receiving unit for receiving a packet in a first format using a global address which is transmitted by the mobile computer for a location registration from a visited site managed by a global address system, and checking a content of the packet, and a packet transfer unit for transferring the packet in a second format using a private address, to a correspondent computer in a home network of the mobile computer managed by a private address system, according to the content of the packet.


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