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Patent Searching and Data


Title:
VISIBLE LIGHT COMMUNICATION METHOD AND VISIBLE LIGHT COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/005561
Kind Code:
A1
Abstract:
[Problem] To provide a simple visible light communication method and device with which it is possible for a diver in water of general water quality conditions in which diving is possible to reliably communicate with a ship or the like on the water surface, even while the diver has stopped at a safety stop position at a depth of 5 m in order to prevent the diver from developing decompression sickness. [Solution] A visible light communication method and device therefor, characterized in that a visible light communication device (1) which is provided with a transmitter (3) and receiver (4) and can be used in water is employed, information which is transmitted at the transmission side is modulated prior to transmission into pseudo-white light emitted from an LED adjusted to have a colour temperature of 4000 to 10000 K and luminous flux of 550 to 1500 lumens, and the pseudo-white light received at the reception side is demodulated to extract the information.

Inventors:
UEMA HIDEKI (JP)
FUKUHARA YUU (JP)
OOSHIRO HIROYOSHI (JP)
GIBO SATOKO (JP)
Application Number:
PCT/JP2012/065450
Publication Date:
January 10, 2013
Filing Date:
June 18, 2012
Export Citation:
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Assignee:
MARINE COMMS RYUKYU INC (JP)
UEMA HIDEKI (JP)
FUKUHARA YUU (JP)
OOSHIRO HIROYOSHI (JP)
GIBO SATOKO (JP)
International Classes:
H04B10/00
Foreign References:
JP2008154063A2008-07-03
JP2009111346A2009-05-21
JP2008304649A2008-12-18
JP2009278455A2009-11-26
Attorney, Agent or Firm:
IP BRAIN PATENT FIRM (JP)
Patent business corporation eye Py brain (JP)
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Claims: