To easily construct and individualize a user interface adapted to the request of a customer.

On a client side, at the time of requesting the control of a VOD(video on demand) server 11, a WWW(world wide web) browser 27 is used and an HTML document including a control code for controlling the VOD server 11 is accessed. In the case that the control code for controlling the VOD server 11 is included in the HTML document distributed from a WWW server 21, the WWW browser 27 originates the control request of the VOD server 11 to the WWW server 21. The control request is sent from the WWW server 21 to a server interface part 23, the server interface part 23 supplies a control execution instruction to a server control part 22 and the server control part 22 supplies a command to the VOD server 11 and controls the VOD server 11.