Patent ID: 8056117
Filing Date: 2011-11-08
Classification: H04L

Abstract:
1. A network system capable of communicating with foreign networks and having a plurality of devices capable of mutually communicating with one another, comprising: at least one main remote controller which sets up authorization to use respective devices belonging to at least one main domain having at least one of the respective devices; and at least one subsidiary remote controller which receives authentication for authorization to use at least one of the respective devices belonging to said at least one main domain having the respective devices authorized to at least one user by respective main remote controllers, wherein at least one of the at least one main remote controller and the subsidiary remote controller both sets up authorization to use the respective devices belonging to said at least one domain and receives the authentication for authorization to use said at least one of the respective devices belonging to said at least one domain and is one of the plurality of devices capable of mutually communicating with one another, wherein a domain key is created to be commonly used for communications with the respective devices in the domain, and wherein the domain key is sent to the respective devices and shared with the respective devices.