Patent ID: 9143339
Filing Date: 2015-09-22
Classification: H04B,H04L,H04N,H04W

Abstract:
1. An information communication method of obtaining information from a subject using an image sensor including a plurality of exposure lines, the information communication method comprising: obtaining first image data by starting exposure sequentially for the plurality of exposure lines in the image sensor each at a different time and performing image capture with a first exposure time so that an exposure time of each of the plurality of exposure lines partially overlaps with an exposure time of an adjacent one of the plurality of exposure lines; and obtaining second image data by starting exposure sequentially for the plurality of exposure lines each at a different time and performing image capture with a second exposure time shorter than the first exposure time so that an exposure time of each of the plurality of exposure lines partially overlaps with an exposure time of an adjacent one of the plurality of exposure lines, and obtaining information by demodulating a striped pattern of bright lines that appears in the second image data, the bright lines each corresponding to the one of the plurality of exposure lines, wherein in the obtaining of second image data, the second exposure time is set to less than or equal to 1/480 second and a sensitivity of the image sensor is set to a value higher than a sensitivity of the image sensor in the obtaining of first image data, to cause the striped pattern of the bright lines to appear in the second image data.