Broadcasting receiver and interfacing method, data transmitting method and data processing method

The present invention relates to a broadcast receiver and the interface method, the data processing method of a host data transfer method and a cable card. The present invention can know the behavior of the network host mode support information, the cable card by transmitting information to the cable card for a network operation mode of the host, including the network information in accordance with Internet protocols. Accordingly, it is possible to exchange information efficiently between the host and the card. Further, while still using the existing information transmission systems, it is possible to send the network information of the host further, has an effect to obtain backward compatibility (compatibility backword). IPTV, interface