Abstract: A computer-implemented method is provided, in which a plurality of luminance change frequencies of a light emitter is determined by coding one of a plurality of transmission information sources. The light emitter transmits a transmission information source by a change in luminance according to each of the plurality of luminance change frequencies. A signal, which controls the change in luminance of the light emitter according to each of the plurality of luminance change frequencies, is output to the light emitter. The plurality of luminance change frequencies include a first frequency and a second frequency. A signal of the first frequency and a signal of the second frequency respectively cause the light emitter to change in luminance according to the first frequency during a first time period and to change in luminance according to the second frequency during a second time period after the first time period has elapsed.

Abstract: In one embodiment, such a method may include receiving a visible light signal by a sensor of a terminal device from a transmitter which transmits the visible light signal by a light source changing in luminance. The terminal device may transmit a request signal for requesting content associated with the visible light signal, from the terminal device to a server, and receive a content from the server. The content may include time points and data to be reproduced at the time points. Thereafter the terminal device may reproduce data included in the content and corresponding to a time point of a clock included in the terminal device.

Abstract: A display method is provided that includes displaying an image included in a video signal on a per frame basis, and representing a tone level of luminance of the image by controlling a light emission period in a frame. The method also includes specifying a light emission period in which light emission is performed for greater than or equal to a time required for transmitting a visible light communication signal, and transmitting the visible light communication signal by superimposing the visible light communication signal onto a portion of the video signal corresponding to the specified light emission period. The method further includes in a case where the specified light emission period is greater than or equal to a time required for transmitting the visible light communication signal, the visible light communication signal is transmitted by luminance changing of the light source in the specified light emission period.

Abstract: A display method is for a display apparatus to display an image, and includes: obtaining a captured display image and a decode target image by an image sensor capturing an image of a subject; obtaining a light ID by decoding the decode target image; transmitting the light ID to a server; obtaining, from the server, an AR image and recognition information which are associated with the light ID; recognizing a region according to the recognition information as a target region from the captured display image; and displaying the captured display image in which the AR image is superimposed on the target region.

Abstract: A computer-implemented method is provided, in which a plurality of luminance change frequencies of a light emitter is determined by coding one of a plurality of transmission information sources. The light emitter transmits a transmission information source by a change in luminance according to each of the plurality of luminance change frequencies. A signal, which controls the change in luminance of the light emitter according to each of the plurality of luminance change frequencies, is output to the light emitter. The plurality of luminance change frequencies include a first frequency and a second frequency. A signal of the first frequency and a signal of the second frequency respectively cause the light emitter to change in luminance according to the first frequency during a first time period and to change in luminance according to the second frequency during a second time period after the first time period has elapsed.

Abstract: A visible light signal transmitting method includes: determining a luminance change pattern to transmit the visible light signal; switching a common switch according to the luminance change pattern, the common switch being for turning ON a plurality of light sources in common; and turning ON a first pixel switch, to cause the first light source to be ON for a period in which the common switch is ON and the first pixel switch is ON, to transmit the visible light signal, the first light source being one of the plurality of light sources. In the turning ON of a first pixel switch, when the image is displayed on the display, the first pixel switch is switched to increase a lighting period that corresponds to the first light source, to compensate a period in which the first light source is OFF for transmission of the visible light signal.

Abstract: A display method is provided that reduces the probability of communication error without causing significant deterioration of picture quality. The method 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. The method also includes transmitting the block of the visible light communication signal by luminance changing in the specified light emission period.

Abstract: An apparatus is provided that includes a display, an image sensor having a plurality of exposure lines, a processor, and a memory storing a computer program, which when executed by the processor, causes the processor to perform operations. The operations include displaying a first assist image on the display, and executing a visible light communication mode. In the visible light communication mode, the operations include (i) setting a second exposure time of the image sensor so that, in an image obtained by capturing a subject by the image sensor, a plurality of bright lines corresponding to the plurality of exposure lines included in the image sensor appear according to a change in luminance of the subject, (ii) obtaining a bright line image including the plurality of bright lines, and (iii) obtaining information by demodulating data specified by a pattern of the plurality of bright lines.

Abstract: A video display method is provided that displays, on a per frame basis, an image included in a video signal. The method includes generating a first visible light communication image by encoding a visible light communication signal, the first visible light communication image being an image having a stripe pattern for visible light communication, and displaying, in a predetermined frame, the image included in the video signal. The method also includes switching a pitch of the first visible light communication image to a different pitch, and generating a second visible light communication image. The method further includes displaying the second visible light communication image that has a stripe pattern configured with a different minimum pitch, which is different in resolution from the stripe pattern of the first visible light communication image.

Abstract: A display device according to the present disclosure includes: a backlight control unit configured to divide the luminescence surface of the backlight into a plurality of areas, and, based on the image signal, (i) perform luminescence control in each of the plurality of areas and (ii) set off periods starting at different times for the plurality of areas. The backlight control unit performs luminescence control in a visible light communication area which is at least one area among the plurality of areas in a period in which the visible light communication signal is output, based on the visible light communication signal, instead of performing luminescence control based on the image signal, and performs the luminescence control based on the image signal, in the visible light communication area, in a period in which the visible light communication signal is not output.

Abstract: An information processing program causes a computer to execute: encoding information to be transmitted, to determine a luminance change frequency; and outputting a signal of the determined luminance change frequency to cause a light emitter to change in luminance according to the determined luminance change frequency to transmit the information. In the encoding, each of a first frequency and a second frequency different from the first frequency is determined as the luminance change frequency. In the outputting, each of a signal of the first frequency and a signal of the second frequency is output as the signal of the determined luminance change frequency, to cause the light emitter to change in luminance according to the first frequency during a first time and change in luminance according to the second frequency during a second time different from the first time after the first time elapses.

Abstract: In a transmitting method that enables communication between various devices including devices other than lightings, a luminance change pattern is determined by modulating a visible light signal, a common switch for turning ON, in common, a plurality of light sources which are included in a light source group of a display and are each used for representing a pixel in an image is switched according to the luminance change pattern, and a first pixel switch for turning ON a first light source among the plurality of light sources included in the light source group is turned ON, to cause the first light source to be ON only for a period in which the common switch is ON and the first pixel switch is ON, to transmit the visible light signal.

Abstract: A display device of the present disclosure is a display device capable of outputting, by a Carousel method, a visible light communication signal including a plurality of signal units. The display device includes a display panel that displays a video signal, a visible light communication processor that encodes the signal units, divides the encoded signal units into a plurality of blocks, generates a plurality of transmission frames by using the plurality of blocks, and uses the generated transmission frames as a backlight control signal, and a backlight that illuminates the display panel from the back surface of the display panel based on the backlight control signal. With regard to the plurality of transmission frames corresponding to one of the signal units generated by the visible light communication processor, an order of the plurality of blocks is different between at least two of the transmission frames.

Abstract: An information communication method is provided for obtaining information from a subject. The method includes receiving an ID list that includes a plurality of sets of identification information, and setting an exposure time of an image sensor so that a bright line corresponding to an exposure line 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 the bright line by the image sensor capturing the subject, and obtaining the information by demodulating data specified by a pattern of the bright line included in the obtained bright line image. The method further includes searching for a channel used to broadcast the content displayed by the subject, by searching the ID list for the obtained information, and obtaining related information associated with the channel from a server.

Abstract: An information communication method is provided for obtaining information from a subject. The method includes receiving an ID list that includes a plurality of sets of identification information, and setting an exposure time of an image sensor so that a bright line corresponding to an exposure line 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 the bright line by the image sensor capturing the subject, and obtaining the information by demodulating data specified by a pattern of the bright line included in the obtained bright line image. The method further includes searching for a channel used to broadcast the content displayed by the subject, by searching the ID list for the obtained information, and obtaining related information associated with the channel from a server.

Abstract: In a transmitting method that enables communication between various devices including devices other than lightings, a luminance change pattern is determined by modulating a visible light signal, a common switch for turning ON, in common, a plurality of light sources which are included in a light source group of a display and are each used for representing a pixel in an image is switched according to the luminance change pattern, and a first pixel switch for turning ON a first light source among the plurality of light sources included in the light source group is turned ON, to cause the first light source to be ON only for a period in which the common switch is ON and the first pixel switch is ON, to transmit the visible light signal.

Abstract: An information processing program causes a computer to execute: encoding information to be transmitted, to determine a luminance change frequency; and outputting a signal of the determined luminance change frequency to cause a light emitter to change in luminance according to the determined luminance change frequency to transmit the information. In the encoding, each of a first frequency and a second frequency different from the first frequency is determined as the luminance change frequency. In the outputting, each of a signal of the first frequency and a signal of the second frequency is output as the signal of the determined luminance change frequency, to cause the light emitter to change in luminance according to the first frequency during a first time and change in luminance according to the second frequency during a second time different from the first time after the first time elapses.

Abstract: A display device includes: a display panel including a display screen; a backlight having a light emission surface that illuminates the display screen of the display panel from behind; a second processor that superimposes the visible light communication signals on backlight control signals generated based on the image signal; and a second controller that divides the light emission surface of the backlight into regions and establishes a period during which control of light emission in each of the regions and control for turning off the backlight in each of the regions a different time are performed based on the backlight control signals outputted by the second processor. When superimposing the visible light communication signals on the backlight control signals, the second processor does not superimpose a visible light communication signal in a period indicating an OFF state of the backlight in the backlight control signals.

Abstract: A display method for appropriately transmitting a visible light communication signal includes: a step of coding a visible light communication signal to generate an image having a striped pattern for visible light communication as a first visible light communication image; a step of displaying the image included in the video signal, in a predetermined frame; and a step of displaying a low-luminance image in the predetermined frame, and sequentially displaying the first visible light communication image, the low-luminance image being an identification image and having uniform luminance lower than average luminance of the image which is to be displayed, wherein in the step, after the image included in the video signal is displayed in the predetermined frame, each of the first identification image and the first visible light communication image is displayed in a same frame as the predetermined frame, for a period shorter than the predetermined frame.

Abstract: An information communication method is provided for obtaining information from a subject. The information communication method includes transmitting position information indicating a position of an image sensor used to capture the subject, and receiving an ID list that is associated with the position indicated by the position information. The information communication method also includes setting an exposure time of the image sensor so that in a bright line corresponding to an exposure line included in the image sensor appears according to a change in luminance of the subject. The information communication method further includes obtaining a bright line image including the bright line, obtaining information by demodulating data specified by a cycle length or frequency of a stripe 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.