Patent ID: 8660123
Filing Date: 2014-02-25
Classification: H04N

Abstract:
1. A broadcast-content transmission and receiving system, comprising: a broadcast-content transmission apparatus, comprising: the broadcast-content receiving apparatus, comprises: a communication network receiving unit that receives, through the communication network, the IP packet that includes the packetized content item and the IP header added to the packetized content item for the purpose of transmitting the content item through the communication network; a broadcast network receiving unit that receives, through the broadcast network that is different from the communication network, the transmission packet that is formed by encapsulating the IP packet, the IP packet being encapsulated for the purpose of transmitting the content item through the broadcast network; an extracting unit that decapsulates the transmission packet received by the broadcast network receiving unit, and extracts the content item included in the IP packet; an IP-multicast-correspondence-information receiving unit that receives, for each content item, the information that concerns the IP multicast correspondence and correlates the IP-multicast group address and the condition for receiving the content item, the IP-multicast group address being the address that groups the broadcast content receiving apparatus and is used for the broadcast content receiving apparatus to select a content item; an IP address selecting unit that selects, when the condition for receiving the content item matches a predetermined condition, the IP-multicast group address corresponding to the condition for receiving the content item and sets the selected IP-multicast group address as an IP address for receiving the content item; and a routing unit that transmits the content item to an external device connected to a given communication network.