Title:
VISIBLE LIGHT RECEIVING METHOD
Document Type and Number:
WIPO Patent Application WO/2015/137313
Kind Code:
A1
Abstract:
A visible light transmitting signal is modulated on the basis of an information signal to be transmitted, superimposed on visible light, and transmitted. A camera (10) captures an image of the transmitted visible light using a pixel amplifier sequence output-type image capturing element (11), and the pixel amplifier sequence output-type image capturing element (11) amplifies an electric charge generated in each of pixels by each of pixel amplifiers (22), and outputs image capture signals in sequence from the pixel amplifiers (22). Image data with light and dark bands obtained from the image capture signals is captured on a frame-by-frame basis, and regarding the sequentially outputted displacement of exposure amount of each of pixels or each of rows, a differential value is calculated. On the basis of the differential values of the image capture signals of a plurality of samples with each pixel or each row within one frame defined as one sample, the transmitted information signal is demodulated.
Inventors:
MUGURUMA HIROSHI (JP)
Application Number:
PCT/JP2015/056946
Publication Date:
September 17, 2015
Filing Date:
March 10, 2015
Export Citation:
Assignee:
UNIVERLINK INC (JP)
International Classes:
H04B10/116; H04B10/69; H04N5/243; H04N5/355
Domestic Patent References:
| WO2013064835A2 | 2013-05-10 |
Foreign References:
| JP2013223047A | 2013-10-28 | |||
| JP2011014957A | 2011-01-20 | |||
| JP5393917B1 | 2014-01-22 |
Other References:
CHRISTOS DANAKIS ET AL.: "Using a CMOS Camera Sensor for Visible Light Communication", IEEE GLOBECOM WORKSHOPS, December 2012 (2012-12-01), pages 1244 - 1248, XP032341559
See also references of EP 3086487A4
See also references of EP 3086487A4
Attorney, Agent or Firm:
IIDA, Akio et al. (JP)
Akio Iida (JP)
Akio Iida (JP)
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