Electronic device
An electronic device includes a response-request transmitting unit and a response receiving unit. The response-request transmitting unit transmits a response request including an identifier of the response-request transmitting unit on a second network to an external device through a first net work. The response receiving unit that receives a response including an identifier of the external device on the first network, transmitted through the second network in response to the response request.
1. An electronic device comprising:
a response-request transmitting unit that, when the electronic device is connected to an external device through a first network, transmits a response request including a second identifier, the second identifier being an address of said response-request transmitting unit on a second network, to the external device through the first network;
a response receiving unit that receives a response from the external device including a first identifier, the first identifier being an address of said external device on said first network, wherein the response is transmitted through said second network using the second identifier as a destination address of the response, the response being transmitted in response to said response request; and
a control unit to detect, when the electronic device is connected to the external device through the first network, whether the electronic device is connected to the external device through the second network, based on whether the response receiving unit receives the response transmitted through said second network from said external device in response to said response request.
2. The electronic device according to claim 1 , wherein
said first network is an HDMI/CEC network and said second network is an Ethernet network.
3. The electronic device according to claim 2 , further comprising:
a contents data receiving unit that receives contents data from said external device through said first network; and
a contents information obtaining unit that obtains contents information from said external device through said second network in response to a response from said external device, received by said response receiving unit.
4. The electronic device according to claim 2 , further comprising:
a plurality of HDMI terminals; and
a display control unit that displays said plurality of HDMI terminals and information corresponding to said first identifier of said external device connected to said HDMI terminal on said second network in response to said response from said external device, received by said response receiving unit.
5. The electronic device according to claim 1 , wherein
said first network is an Ethernet network and said second network is an HDMI/CEC network.
6. The electronic device according to claim 5 , further comprising:
a first contents data receiving unit that receives contents data transmitted from said external device through said first network;
a second contents data receiving unit that receives contents data transmitted from said external device through said second network; and
a transmission line switching control unit that changes a state of receiving said contents data on said first contents data receiving unit to a state of receiving said contents data on said second contents data receiving unit in response to a response from said external device, received by said response receiving unit.
7. An electronic device comprising:
a response-request receiving unit that receives a response request including a second identifier, the second identifier being an address of an external device on a second network, transmitted from said external device through a first network when the electronic device is connected to the external device through the first network; and
a response transmitting unit transmitting a response including an own first identifier, the first identifier being an address of the response transmitting unit on said first network, to said external device, the response being transmitted through said second network using the second identifier as a destination address of the response, in response to said response request received by said response-request receiving unit.
8. The electronic device according to claim 7 , wherein
said first network is an HDMI/CEC network and said second network is an Ethernet network.
9. The electronic device according to claim 8 , wherein
a contents data transmitting unit that transmits contents data to said external device through said first network; and
a contents information transmitting unit that transmits contents information to said external device through said second network.
10. The electronic device according to claim 7 , wherein
said first network is an Ethernet network and said second network is an HDMI/CEC network.
11. The electronic device according to claim 10 , further comprising:
a first contents data transmitting unit that transmits contents data to said external device through said first network;
a second contents data transmitting unit that transmits contents data to said external device through said second network; and
a transmission line switching control unit that changes a state of transmitting said contents data on said first contents data transmitting unit to a state of transmitting said contents data on said second contents data transmitting unit.