Patent ID: 6557031
Filing Date: 2003-04-29
Classification: H04L,H04N

Abstract:
A CATV system comprising:a first CATV network for transmitting a digital video signal compressed in accordance with the Moving Picture Experts Group-2 (MPEG2) system; a second CATV network for transmitting a digital video signal compressed in accordance with the MPEG2 system; an Internet Protocol (IP) network using the IP prescribed by the Internet Engineering Task Force (IETF); a first interworking unit connected to said first CATV network and said IP network said first interworking unit converting the digital video signal transmitted in said first CATV network to a packet based on the IP and transmitting the packet to said IP network; and a second interworking unit connected to said second CATV network and said IP network, said second interworking unit converting the packet to a digital video signal compressed in accordance with the MPEG2 system and transmitting to said second CATV network the digital video signal converted thereto from the packet in said second interworking unit.