Contents-delivery system, contents-transmission device, contents-reception device, and contents-delivery method
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United States of America Patent
Stats
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Dec 29, 2009
Grant Date -
Dec 15, 2005
app pub date -
May 23, 2005
filing date -
May 25, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A contents-delivery system has a contents-transmission device transmitting the contents, and a contents-reception device receiving the contents from the transmission device. A first communication device performs communication from the transmission device to the reception device via a high-directivity transmission carrier. A second communication device performs communication at least from the reception device to the transmission device. An optical position confirmation device permits it through optical irradiation to confirm that a position of the reception device with respect to the transmission device is within a range in which the first communication device can communicate. A position of the reception device is matched with the transmission device based on an irradiation position of visible light. It is thus possible to locate the reception device to a communication-enabled position if the reception device is directed against the transmission device.
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Family
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