Patent ID: 9673903
Date: 2017-06-06
CPC Classifications: H04B

Claim:
1. A method for receiving a visible light signal, comprising: controlling use of a camera as a light signal receiver to capture a group of continuous images covering an emitter, the emitter emits visible light signals, the group of continuous images includes an image of a visible light signal of the emitter and background image; obtaining a visible light signal emitted by the emitter from the group of continuous images, specifically comprises: dividing the group of continuous images into a plurality of images; comparing luminance variation with time of each region with a predetermined size of all images, selecting a region with continuous varying luminance, and determining that a visible light signal that comes from the emitter exists in the region; and analyzing and processing luminance changes of the region of all the images to obtain a visible light signal that comes from the emitter, outputting the image of a visible light signal of the emitter when the images captured by the camera include the visible light signal of the emitter; outputting the background images when the images captured by the camera do not include the visible light signal of the emitter; processing the visible light signal to restore original information.