Abstract: An information communication method includes: obtaining a first image by capturing a subject; detecting a range of the subject from the first image; determining, from among a plurality of exposure lines, predetermined exposure lines for capturing the range of the subject; setting an exposure time so that, in a second image obtained using the predetermined exposure lines, a bright line appears according to a change in luminance of the subject; obtaining the second image including the bright line, by capturing the subject that changes in luminance using the predetermined exposure lines with the set exposure time; and demodulating data specified by a pattern of the bright line included in the obtained second image.

Abstract: An information communication method includes: obtaining a first image by capturing a subject; detecting a range of the subject from the first image; determining, from among a plurality of exposure lines, predetermined exposure lines for capturing the range of the subject; setting an exposure time so that, in a second image obtained using the predetermined exposure lines, a bright line appears according to a change in luminance of the subject; obtaining the second image including the bright line, by capturing the subject that changes in luminance using the predetermined exposure lines with the set exposure time; and demodulating data specified by a pattern of the bright line included in the obtained second image.

Abstract: An information communication method that enables communication between various devices includes: setting an exposure time of an image sensor so that, in an image obtained by capturing a subject by the image sensor, a bright line corresponding to an exposure line included in the image sensor appears according to a change in luminance of the subject; obtaining a bright line image including the bright line, by capturing the subject that changes in luminance by the image sensor with the set exposure time; and obtaining information by demodulating data specified by a pattern of the bright line included in the obtained bright line image, wherein in the obtaining of a bright line image, the bright line image is obtained by capturing light emitted from the subject and expanded by an optical system.

Abstract: An information communication method is provided that transmits a signal using a change in luminance. The information communication method includes determining a pattern of the change in luminance by modulating the signal to be transmitted, and transmitting the signal by a display, which is a light emitter, changing in luminance according to the determined pattern. The method also includes detecting, by a sensor, a person within a viewing angle of the display or a person near the viewing angle. Further, in the transmitting of the signal, the signal is transmitted by changing in luminance by a larger change amount in the case where the person near the viewing angle is detected than in the case where the person within the viewing angle is detected.

Abstract: An information communication method is provided that transmits a signal using a change in luminance. The information communication method includes determining a pattern of the change in luminance by modulating the signal to be transmitted, and transmitting the signal by a display, which is a light emitter, changing in luminance according to the determined pattern. Additionally, in the transmitting, a part of the display changes in luminance according to the pattern to display the image, the part emitting light with predetermined brightness or more.

Abstract: An information communication method that enables communication between various devices includes: transmitting position information indicating a position of a terminal device; obtaining one or more sets of identification information of respective one or more devices and one or more sets of service information respectively associated with the one or more sets of identification information, and holding the one or more sets of identification information and the one or more sets of service information; setting an exposure time of an image sensor; obtaining a bright line image including a plurality of bright lines; obtaining identification information of a subject, by demodulating data specified by a pattern of the plurality of bright lines included in the obtained bright line image; and selecting service information associated with the identification information of the subject from the held one or more sets of service information, and presenting the service information to a user.

Abstract: A display method capable of reducing the probability of communication error without causing significant deterioration of picture quality includes: specifying, as a specified light emission period, a light emission period in which light emission is performed for greater than or equal to a time required for transmitting a block included in a visible light communication signal, out of one or more light emission periods in which light emission is performed for displaying an image included in a video signal; and transmitting the block of the visible light communication signal by luminance changing in the specified light emission period.

Abstract: A visible light communication signal display method of displaying (i) an image represented by video signals and (ii) an image obtained by encoding visible light communication signals includes: encoding at least part of the visible light communication signals to generate an encoded image; generating a plurality of sub-images which correspond to respective partial images obtained by dividing the encoded image and each of which (i) includes a corresponding one of the partial images and (ii) except for the corresponding partial image, is an image having a substantially uniform luminance value lower than or equal to a predetermined luminance value; and displaying, in a video display period, the image represented by the video signals, and displaying the sub-images in time series in a communication period different from the video display period.

Abstract: An information communication method includes: setting an exposure time of an image sensor so that, in an image obtained by capturing a subject by the image sensor, a bright line corresponding to an exposure line included in the image sensor appears according to a change in luminance of the subject; capturing the subject that changes in luminance by the image sensor with the set exposure time, to obtain the image including the bright line; and obtaining information by demodulating data specified by a pattern of the bright line included in the obtained image.

Abstract: An information communication method includes: setting an exposure time of an image sensor so that, in an image obtained by capturing a subject by the image sensor, a bright line corresponding to an exposure line included in the image sensor appears according to a change in luminance of the subject; capturing the subject that changes in luminance by the image sensor with the set exposure time, to obtain the image including the bright line; and obtaining information by demodulating data specified by a pattern of the bright line included in the obtained image.

Abstract: An information communication method that enables communication between various devices includes: determining a pattern of a change in luminance, by modulating a first signal to be transmitted; transmitting the first signal, by all of a plurality of light emitting elements included in a light emitter changing in luminance in a same manner according to the determined pattern of the change in luminance; and transmitting a second signal to be transmitted, by each of the plurality of light emitting elements emitting light with one of two different luminance values so that a light and dark sequence of luminance appears in a space where the light emitter is placed.

Abstract: An information communication method that enables communication between various devices includes: 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; 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; and obtaining information by demodulating data specified by a pattern of the plurality of bright lines included in the obtained bright line image, wherein exposure starts sequentially for the plurality of exposure lines each at a different time, and exposure of each of the plurality of exposure lines starts a predetermined blank time after exposure of its adjacent exposure line ends.

Abstract: An information communication method that enables communication between various devices includes: setting an exposure time of an image sensor; obtaining a bright line image including a bright line, by capturing a subject that changes in luminance by the image sensor with the set exposure time; setting a longer exposure time than the exposure time; obtaining a normal captured image by image capture by the image sensor with the longer exposure time; generating a synthetic image by specifying, in the normal captured image, a part that corresponds to the bright line included in the bright line image and superimposing a signal object on the normal captured image, the signal object being an image indicating the part; displaying the synthetic image; and obtaining information by demodulating data specified by a pattern of the bright line included in the obtained bright line image.

Abstract: An information communication method that enables communication between various devices includes: determining a pattern of the change in luminance by modulating the signal to be transmitted; and transmitting the signal by a light emitter changing in luminance according to the determined pattern, wherein the pattern of the change in luminance is a pattern in which one of two different luminance values occurs in each arbitrary position in a predetermined duration, and in the determining, the pattern of the change in luminance is determined so that a luminance change position in the duration is different for each of different signals to be transmitted, the luminance change position being a position at which the luminance rises or a position at which the luminance falls.

Abstract: A video display method in which a visible light communication signal can be appropriately transmitted includes: Step SL 11 of generating a first visible light communication image that is an image having a stripe pattern for visible light communication, by encoding the visible light communication signal; Step SL12 of displaying, in a predetermined frame, an image included in the video signal; and Step SL13 of displaying, in the predetermined frame, the first visible light communication image sequentially thereafter an identification image that is an image having luminance uniformly lower than average luminance of the image that is displayed.

Abstract: An information communication method that enables communication between various devices includes: determining a plurality of patterns of a change in luminance, by modulating a respective plurality of signals 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, a signal corresponding to the pattern, wherein in the transmitting, each 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 plurality of light emitters.

Abstract: An information communication method that enables communication between various devices includes: determining a pattern of a change in luminance; transmitting a signal by a light emitter changing in luminance; determining a sequence of first and second image units; and displaying an image including the first and second image units arranged according to the determined sequence, wherein in the displaying: for 0, the sequence of the first and second image units is determined so that a first image unit group and a second image unit group that have a same number of image units as each other are consecutive; and for 1, the sequence of the first and second image units is determined so that a first image unit group and a second image unit group that have different numbers of image units from each other are consecutive.

Abstract: A video display method which allows a visible light communication signal to be appropriately transmitted includes: Step SL21 of generating an image having a stripe pattern as a visible light communication image; Step SL22 of calculating average luminance of the visible light communication image; Step SL23 of generating a visible light superimposition image by superimposing the visible light communication image only on, among one or more sub-images included in an image of a video signal that is displayed in the frame, a sub-image that is displayed in a specific sub-frame that is, among one or more sub-frames in each of which a corresponding one of the one or more sub-images is displayed, a sub-frame for representing the average luminance calculated; and Step SL24 of displaying the visible light superimposition image in the specific sub-frame.

Abstract: An information communication method that enables communication between various devices includes: transmitting position information indicating a position of an image sensor; receiving an ID list; setting an exposure time of the image sensor; obtaining a bright line image including a bright line, by capturing a subject by the image sensor; obtaining information by demodulating data specified by a pattern of the bright line included in the obtained bright line image; and searching the ID list for identification information that includes the obtained information.

Abstract: An information communication method includes: setting an exposure time of an image sensor to less than or equal to 1/2000 second so that, in an image obtained by capturing a subject by the image sensor, a stripe bright line parallel to a plurality of exposure lines included in the image sensor appears according to a change in luminance of the subject; obtaining the image including the stripe bright line parallel to the plurality of exposure lines by, using the set exposure time, starting exposure sequentially for the plurality of exposure lines each at a different time; and obtaining information by demodulating data according to, in a pattern of the bright line included in the obtained image, a brightness change in a direction perpendicular to the plurality of exposure lines.