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. 27, 2014
Filed:
Apr. 11, 2006
Satoshi Komatsu, Tachikawa, JP;
Satoshi Komatsu, Tachikawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A non-secure network gatewayand a secure network gatewayare realized by mutually independent computers, and are connected, by standard protocol communication portionsand, to a non-secure networkand a secure networkusing a standard protocol the standardized specifications of which have been published. Data exchange between nonstandard protocol communication portionsandof the sub-gatewaysandis performed using a nonstandard protocol the specifications of which have not been published, and data exchange between the nonstandard side and the standard side is performed only in the application layer. Protocol conversion portionsandrefers to relay permission settings tablesandto confirm relay permission for communication data, and perform protocol conversion only when relaying is permitted. Even in the event that illicit communication data from one network has penetrated into a gateway, penetration of the communication data into the other network can be prevented.