Title:
可視光通信装置
Document Type and Number:
Japanese Patent JP5374202
Kind Code:
B2
Abstract:
A visible light communication apparatus is constituted with a transmitter (1) for illuminating and projecting visible light on which an information signal is superimposed from a lamp fitting (2) and a receiver (5) for receiving the visible light to take out the information signal superimposed on the visible light. The transmitter (1) modulates a transmission information signal, driving a light projecting element (3) of the lamp fitting so as to superimpose the transmission information signal on the visible light of the lamp fitting (2), thereby radiating white light containing a blue light component as visible illumination light. The receiver (5) receives the white visible light containing the blue light component radiated from the transmitter (1) and generates a receiving information signal from the light receiving signal on a receiving circuit (7). 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 (23) of the light receiving unit (6). 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 (5) at the highest sensitivity can be used to perform visible light communications at high speed, while illuminating by the white light.
Inventors:
Fumitaka Murayama
Hiroyuki Kurokawa
Naoyuki Furuta
Hiroyuki Kurokawa
Naoyuki Furuta
Application Number:
JP2009071293A
Publication Date:
December 25, 2013
Filing Date:
March 24, 2009
Export Citation:
Assignee:
Planners Land Co., Ltd.
International Classes:
H04B10/11; H04B10/116
Domestic Patent References:
| JP2008034989A | ||||
| JP2002290335A | ||||
| JP1122220A | ||||
| JP5327624A | ||||
| JP2007043592A |
Attorney, Agent or Firm:
Akio Iida
Michiko Ema
Chiori Ueda
Takaya Muramatsu
Michiko Ema
Chiori Ueda
Takaya Muramatsu