Patent ID: 9094120
Filing Date: 2015-07-28
Classification: H04B,H04N

Abstract:
1. An information communication method of obtaining information that is transmitted by a transmitting method, the transmitting method including determining a plurality of patterns of a change in luminance, by modulating a respective plurality of information to be transmitted; and transmitting, by each of a plurality of light emitters changing in luminance according to any one of the determined plurality of patterns of the change in luminance, information corresponding to the pattern, wherein in the transmitting, each of two or more light emitters of the plurality of light emitters changes in luminance at a different frequency so that light of one of two types of light different in luminance is output per a time unit predetermined for the light emitter and that the time unit predetermined for the light emitter is different from a time unit predetermined for an other one of the two or more light emitters, the information communication method comprising: setting an exposure time of an image sensor so that, in an image obtained by capturing a subject by the image sensor, a plurality of bright lines corresponding to a plurality of exposure lines included in the image sensor appear according to a change in luminance of the subject, the subject being one of the plurality of light emitters; obtaining a bright line image including the plurality of bright lines, by capturing the subject changing in luminance by the image sensor with the set exposure time; obtaining information by demodulating data specified by a pattern of the plurality of bright lines included in the obtained bright line image; and specifying a frequency of the change in luminance of the subject, based on the pattern of the plurality of bright lines included in the obtained bright line image.