Optical communications – Optical communication over freee space – Transceivers
Reexamination Certificate
2005-05-23
2009-12-29
Vanderpuye, Ken N (Department: 2613)
Optical communications
Optical communication over freee space
Transceivers
C398S115000, C398S116000, C398S118000, C398S129000, C398S130000, C398S131000
Reexamination Certificate
active
07639951
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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Frommer William S.
Frommer & Lawrence & Haug LLP
Liu Li
Presson Thomas F.
Sony Corporation
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