Control data system and control data transmission method

摘要

Controllable units such as a television set (3) or a playback unit (4) are connected to a home network (2). A gateway (6) connects the home network (2) with the Internet (7) and, at the same time, forwards externally-supplied data to the home network (2). A portable terminal (8) sends HTML data for controlling controllable units and allows a user to browse HTML data sent from the gateway (6), either via a wireless data communication line at home or via the Internet (7) away from home.