Patent ID: 6230325
Filing Date: 2001-05-08
Classification: H04N

Abstract:
An information network system, comprising:a broadcasting center for transmitting a broadcasting signal;a user terminal for receiving the broadcasting signal from said broadcasting center;a data base center connected to said user terminal by the internet;a network connecting said user terminal and said data base center for bidirectional communications;guide information addition means provided in said broadcasting center for multiplexing data base accessing guide information which includes a universal resource locator (URL) for a data base center into the broadcasting signal for a program to be transmitted;guide information extraction means provided in said user terminal for extracting the guide information including the URL from the broadcasting signal received by said user terminal so that a user of said user terminal may be informed of the URL by said user terminal;first network communication means provided in said user terminal for accessing the data base defined by said URL and for receiving a response from said data base center; andsecond network communication means provided in said data base center for confirming the guide information and the user information transmitted thereto from said user terminal via said network and then establishing bidirectional communication with said user terminal.