Information communication method
First Claim
1. An information communication method for obtaining information from a subject using a terminal device that includes an image sensor, the information communication method comprising:
- setting an exposure time of the image sensor having a plurality of exposure lines so that, in an image obtained by capturing the subject by the image sensor, a bright line corresponding to each of the plurality of exposure lines included in the image sensor appears according to a change in luminance of the subject;
obtaining a bright line image including a plurality of bright lines, by capturing the subject that changes in luminance by the image sensor with the set exposure time; and
obtaining identification information of the subject, by demodulating data specified by a stripe pattern of the plurality of bright lines included in the obtained bright line image,wherein, in the obtaining of the bright line image, 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, andwherein, during asynchronous communication, a minimum width of the stripe pattern corresponds to at least two bright lines in the obtained bright line image.
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Abstract
An information communication method obtains information from a subject using a terminal device that includes an image sensor. The method includes setting an exposure time of the image sensor having a plurality of exposure lines so that a bright line corresponding to each of the plurality of exposure lines included in the image sensor appears according to a change in luminance of the subject. The method also includes obtaining a bright line image including a plurality of bright lines, and obtaining identification information of the subject. In the obtaining of the bright line image, 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. During asynchronous communication, a minimum width of the stripe pattern corresponds to at least two bright lines in the obtained bright line image.
232 Citations
13 Claims
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1. An information communication method for obtaining information from a subject using a terminal device that includes an image sensor, the information communication method comprising:
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setting an exposure time of the image sensor having a plurality of exposure lines so that, in an image obtained by capturing the subject by the image sensor, a bright line corresponding to each of the plurality of exposure lines included in the image sensor appears according to a change in luminance of the subject; obtaining a bright line image including a plurality of bright lines, by capturing the subject that changes in luminance by the image sensor with the set exposure time; and obtaining identification information of the subject, by demodulating data specified by a stripe pattern of the plurality of bright lines included in the obtained bright line image, wherein, in the obtaining of the bright line image, 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 wherein, during asynchronous communication, a minimum width of the stripe pattern corresponds to at least two bright lines in the obtained bright line image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An information communication device for obtaining information from a subject, the information communication device including a processor and an image sensor, the processor executes operations comprising:
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setting an exposure time of the image sensor having a plurality of exposure lines so that, in an image obtained by capturing the subject by the image sensor, a bright line corresponding to each of the plurality of exposure lines included in the image sensor appears according to a change in luminance of the subject; obtaining a bright line image including a plurality of bright lines, by capturing the subject that changes in luminance by the image sensor with the set exposure time; and obtaining identification information of the subject, by demodulating data specified by a stripe pattern of the plurality of bright lines included in the obtained bright line image; wherein, in the obtaining of the bright line image, 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 wherein, during asynchronous communication, a minimum width of the stripe pattern corresponds to at least two bright lines in the obtained bright line image.
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13. A non-transitory recording medium that stores a program for controlling an information communication device for obtaining information from a subject, the information communication device including a processor and an image sensor, the program executed by the processor causing the information communication device to execute:
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setting an exposure time of the image sensor having a plurality of exposure lines so that, in an image obtained by capturing the subject by the image sensor, a bright line corresponding to each of the plurality of exposure lines included in the image sensor appears according to a change in luminance of the subject; obtaining a bright line image, including a plurality of bright lines, by capturing the subject that changes in luminance by the image sensor with the set exposure time; and obtaining identification information of the subject, by demodulating data specified by a stripe pattern of the plurality of bright lines included in the obtained bright line image; wherein, in the obtaining of the bright line image, 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 wherein, during asynchronous communication, a minimum width of the stripe pattern corresponds to at least two bright lines in the obtained bright line image.
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Specification