Patent ID: 9706243
Date: 2017-07-11
CPC Classifications: H04L,H04N

Claim:
1. A broadcast receiver comprising: a security card that transmits a request opening a session associated with a resource on a host device to the host device; and the host device that transmits a response in response to the request of the security card, wherein the security card transmits a first data unit requesting an internet protocol (IP) address of the security card to the host device, wherein the host device transmits a second data unit including the IP address of the security card to the security card in response to the first data unit, wherein the host device comprising: an IP physical interface unit that receives an Ethernet frame including an IP packet which carries a first moving picture experts group (MPEG) transport stream (TS) packet through an IP network; a broadband interface unit that receives a cable broadcast signal which carries a second MPEG TS packet through a cable network; a demodulator that demodulates the cable broadcast signal using a quadrature amplitude modulation (QAM) method; a routing engine that routes the IP packet based on destination information included in the Ethernet frame using a third layer (layer-3) routing method; a decapsulator that extracts the first MPEG TS packet from the IP packet; a multiplexer that generates a CableCARD MPEG Packets (CMP) by appending a packet header to the first MPEG TS packet and second MPEG TS packet, multiplexes the generated CMP and output the multiplexed CMP to the security card; and a descrambler that decrypts CMP encrypted by the security card and process the decrypted CMP for a demultiplexer.