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:
Jul. 07, 2009
Filed:
Nov. 04, 2005
Moe Hamamoto, Osaka, JP;
Takeshi Kokado, Kyoto, JP;
Manabu Yamamoto, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
Provided is a communication terminal capable of establishing a P2P communication path with a communication terminal connected to a different private network. A communication terminal () transmits and receives messages to and from a server () via a router (), thereby examining a relay characteristic of the router (). When the examined relay characteristic of the router () is Port Reuse, the communication terminal () determines address information, which contains at least a port number of the communication terminal (), which port number is to be used for P2P communication with a communication terminal (), to be address information about the router. The communication terminal () exchanges the determined address information about the router () with the communication terminal (). Based on the exchanged address information, the communication terminal () establishes a P2P communication path with a communication terminal ().