Patent ID: 9716554
Date: 2017-07-25
CPC Classifications: H04B

Claim:
1. An information sending device comprising: a table in which signals included in information to be transmitted are associated with information on color changes in a plurality of stages based on redundancy; a modulating section which modulates the information to be transmitted into signals composed of changes in color by referencing the table; and a light emission control section which controls a light emitting section which emits light in a plurality of colors to emit light while changing color temporally based on the signals generated by the modulating section, wherein the light emission control section further controls the light emitting section by setting a temporal color change period comprising a light emission period in which the light emission control section controls the light emitting section to emit light while changing color of the emitted light temporally and a non-light emission period in which the light emission control section controls the light emitting section to not emit light, and during which the color of the temporal color change period is black.