Patent ID: 8169641
Filing Date: 2012-05-01
Classification: H04L

Abstract:
1. A first server provided in a network system in which a router intervenes between different networks to allow at least one device on the different networks to perform one-to-one communication, the first server comprising: a first device information acquisition unit configured to perform one-to-one communication with a second server on a second network connected to a first network to which the first server is connected via the router to acquire device information concerning a second device on the second network, and to store the acquired device information in a storage unit; and a device information reply unit configured such that in response to receipt of a search packet searching for device information transmitted in a form of one-to-many communication from a terminal device on the first network, the device information reply unit extracts from the storage unit the device information, which matches a search criterion contained in the search packet and which is obtained from the second server on the second network, and returns the extracted device information to the terminal device on the first network which transmitted the search packet.