IPTV receiver and method of discovering an IPTV service

A method of discovering an Internet Protocol TV (IPTV) service for building a channel map in an IPTV receiver, the method comprising:

• connecting a service provider through a network;
• receiving a service provider discovery record;
• parsing the received service provider discovery record and reading registration server address information included in the service provider discovery record;
• and
• transmitting a request of a registration based on the read registration server address information, and receiving a provision information record including EPG discovery information.

An Internet Protocol TV (IPTV) receiver comprising:

• a network interface transmitting and receiving an Internet protocol (IP) packet through a network;
• an IP network stack confirming a destination of the received IP packet and classifying the IP packet according to protocols;
• a Service Information (SI) decoder parsing a service provider discovery record included in the IP packet, reading registration server address information included in the service provider discovery record, parsing a provision information record included in the IP packet, and reading EPG discovery information included in the provision information record;
• and
• an IPTV Terminal Function (ITF) operation controller controlling a request of a registration to be transmitted based on the read registration server address information for receiving the provision information record.