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.
Patent No.:
Date of Patent:
May. 11, 2010
Filed:
Mar. 12, 2004
Shinichi Kawano, Kanagawa, JP;
Yukihiko Aoki, Tokyo, JP;
Tadashi Adachihara, Kanagawa, JP;
Shoji Araki, Kanagawa, JP;
Shinichi Kawano, Kanagawa, JP;
Yukihiko Aoki, Tokyo, JP;
Tadashi Adachihara, Kanagawa, JP;
Shoji Araki, Kanagawa, JP;
Sony Corporation, , JP;
Abstract
A network system is provided allowing easy communications with another apparatus via NAPT, as well as a communication method, an information processing apparatus and method, and a program. A local communication apparatus acquires a service providing packet from an apparatus service providing apparatus via a port of a relay apparatus, acquires a service providing packet from another apparatus service providing apparatus via another port of the relay apparatus, calculates a difference value between two pieces of global address information contained in the service providing packets, and predicts that a third port is the port to be used for the next communication. The system, apparatus and methods described can be applied to an instant message service system.