Invention Grant
- Patent Title: Visible light communication apparatus
- Patent Title (中): 可见光通信装置
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Application No.: US12412515Application Date: 2009-03-27
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Publication No.: US08131154B2Publication Date: 2012-03-06
- Inventor: Fumitaka Murayama , Hiroyuki Kurokawa , Naoyuki Furuta
- Applicant: Fumitaka Murayama , Hiroyuki Kurokawa , Naoyuki Furuta
- Applicant Address: JP Nagoya-shi
- Assignee: Planners Land Co., Ltd.
- Current Assignee: Planners Land Co., Ltd.
- Current Assignee Address: JP Nagoya-shi
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JPP2008-86115 20080328
- Main IPC: H04B10/00
- IPC: H04B10/00

Abstract:
A visible light communication apparatus is constituted with a transmitter for illuminating and projecting visible light on which an information signal is superimposed from a lamp fitting and a receiver for receiving the visible light to take out the information signal superimposed on the visible light. The transmitter modulates a transmission information signal, driving a light projecting element of the lamp fitting so as to superimpose the transmission information signal on the visible light of the lamp fitting, thereby radiating white light containing a blue light component as visible illumination light. The receiver receives the white visible light containing the blue light component radiated from the transmitter and generates a receiving information signal from the light receiving signal on a receiving circuit. A blue light photodiode which receives blue light at the highest sensitivity to output a light receiving signal is used as a light receiving element of the light receiving unit. The lamp fitting for radiating the white light containing the blue light component on the side of the transmitter as visible illumination light and the blue light photodiode for receiving blue light on the side of the receiver at the highest sensitivity can be used to perform visible light communications at high speed, while illuminating by the white light.
Public/Granted literature
- US20090245806A1 VISIBLE LIGHT COMMUNICATION APPARATUS Public/Granted day:2009-10-01
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