Patent ID: 7340517

Claim:
A gateway comprising: an IP (Internet Protocol) interface unit to send and receive data to and from an information device on an IP network; an IEEE 1394 LINK/PHY chip to send and receive data to and from an AV device on an IEEE 1394 network; and a microprocessor to control entire system of the gateway, using various software, the various software including: a Web page generation module to generate a Web page to operate the AV device; a monitoring module to monitor an HTTP request, as control request for controlling the AV device, which the information device sends when a user operates the information device using the Web page after the IP interface unit sends to the information device the Web page generated by the Web page generation module; and a command conversion module to convert the HTTP request, as the control request detected by the monitoring module, into AV/C command for controlling the AV device on the IEEE 1394 network, wherein when the microprocessor detects an AV device newly connected to the IEEE 1394 network, the microprocessor decides whether or not subunit type of the newly connected AV device is an unregistered subunit type, and if the decision indicates that the subunit type of the newly connected AV device is an unregistered subunit type, then the microprocessor downloads the command conversion module and the Web page generation module, both corresponding to the newly connected AV device, from the information device or a further information device on the IP network or from the newly connected AV device.