Communication terminal, network device, communication system and communication method
AssigneeSony Corporation
InventorsYoshinori Ohashi, Eiju Yamada
Life of this patent
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Abstract
There is provided a communication terminal, a network device, a communication system and a communication method which can minimize the time required for exchange of network addresses at the time of data transmission-reception between network devices. The communication terminal includes a reception section receiving a network address of a network device connected to a wide area network, from the network device through device-to-device local communication; and a transmission section transmitting the network address of the network device received by the reception section, to another communication terminal, through a communication path different from the wide area network.
Claims10
A communication terminal comprising:
- a reception section receiving a network address of a network device connected to a wide area network, from the network device through device-to-device local communication;
- and
- a transmission section transmitting the network address of the network device received by the reception section, to another communication terminal, through a communication path different from the wide area network.
A network device comprising:
- a transmission section transmitting, in response to a query from a communication terminal, an IP address of the network device and a port number for identifying a predetermined electronic device connected through a local area network, to the communication terminal through device-to-device local communication;
- and
- a relay section relaying data transmission-reception between another network device and the electronic device through the Internet and the local area network, the another network device having received the IP address and the port number from another communication terminal through device-to-device local communication, the received IP address and the received port number having been transferred from the communication terminal to said another communication terminal through a communication path different from the Internet.
A communication method comprising steps of:
- allowing a communication terminal to receive a network address of a network device connected to a wide area network from the network device through device-to-device local communication, and to transmit the network address to another communication terminal through a communication path different from the wide area network;
- allowing said another communication terminal to transmit the network address received from the communication terminal to another network device connected to the wide area network through device-to-device local communication;
- and
- allowing the network device and said another network device to perform data transmission-reception therebetween through the wide area network.
Dependencies are inferred from the claim text.