Abstract:
A mobile device includes a position sensing unit, a remote control information obtainment unit, and a storage unit. Position information obtained by the position sensing unit is stored in the storage unit in association with remote control information. The mobile device further includes a directional space obtainment unit and an apparatus specification unit. The mobile device recognizes a direction pointed by a user using the mobile device, and enables operation of a terminal apparatus existing in the pointing direction.
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.
Abstract:
An information communication method selects between a visible light communication mode, in which information is obtained from a subject using an image sensor having a plurality of exposure lines, and a normal imaging mode. The information communication method includes obtaining first image data by image capture with a first exposure time in the normal imaging mode and obtaining second image data by image capture with a second exposure time, shorter than the first exposure time, in the visible light communication mode. When the second image data is obtained by capturing a plurality of subjects reflected on a reflection surface, the information is obtained by separating a bright line corresponding to each subject from bright lines included in the second image data according to a strength of the bright line and demodulating, for each subject, the data specified by the pattern of the bright line.
Abstract:
A visible light communication method transmits a signal by visible light communication. The visible light communication method includes modulating the signal into a predetermined blinking pattern, and transmitting the signal by causing visible light to blink according to the predetermined blinking pattern, from a projector disposed in an indoor space surrounded by a wall toward the wall. The visible light communication method also includes projecting video from the projector toward the wall, wherein the visible light is reflected by the wall to prevent the signal from being received in an outside of the indoor space, and the signal is used to transmit data related to the video projected to a plurality of terminals in the indoor space.
Abstract:
A method includes setting an exposure time of an image sensor included in a terminal device so that, in an image obtained by capturing a subject by the image sensor, a bright line corresponding to each of a 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, obtaining identification information of the subject, and obtaining a direction of light of the subject. Additionally, the method includes calculating a distance between the terminal device and the subject, and obtaining a location of the subject. The method further includes calculating a location of the terminal device using the distance and the location of the subject, and sending the location of the terminal device to a server.
Abstract:
An information communication method selectively obtains a location of a terminal device. Determining the location of the terminal device by wireless communication with a wireless access point includes receiving a radio signal including a first identification information to identify a location of the wireless access point, and calculating the location of the terminal device using the identified location of the wireless access point, which is identified by the first identification information. Determining the location of the terminal device by visible light communication with a subject provides higher accuracy and includes setting an exposure time of an image sensor having a plurality to 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, obtaining a bright line image by capturing the subject, and demodulating data from the bright line image.
Abstract:
A recoding medium storing a computer program, which, when executed by a processor, cause the processor to perform operations including: determining a pattern of a change in luminance, by modulating the signal to be transmitted; and transmitting the signal, by at least one light emitter changing in luminance according to the determined pattern of the change in luminance. The signal has a plurality of blocks, each block of the plurality of blocks includes (i) address information that indicates a position of a data segment in the signal and (ii) the data segment. In the transmitting, the signal is transmitted repeatedly at different times. The address information is used to identify a same location of the block data segment in the signal transmitted at a first time and in the signal transmitted at a second time, which is different from the first time. The signal has a check signal.
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:
An apparatus includes a processor and a recording medium having a program, the program causing the processor to execute operations. The operations include providing a normal mode and a visible light communication mode, wherein the normal mode and the visible light communication mode are switchable. In the normal mode, first image data is obtained by image capture with a first exposure time by sequentially starting exposure for a plurality of exposure lines in an image sensor each at a different time and each of the plurality of exposure lines partially overlaps in exposure time an adjacent exposure line. In the visible light communication mode, (i) a second exposure time of the image sensor is set, (ii) a bright line image is obtained, and (iii) information is obtained by demodulating data specified by a pattern of the plurality of bright lines included in the obtained bright line image.
Abstract:
An information communication method of transmitting a signal using a change in luminance is provided. 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 at least one light emitter changing in luminance according to the determined pattern of the change in luminance. In the determining, a first luminance change pattern corresponding to a body, a second luminance change pattern indicating a header for specifying the body, and a third luminance change pattern indicating another header different from the header are determined. In the transmitting, the header, the body and the other header are transmitted by the at least one light emitter changing in luminance according to the first luminance change pattern, the second luminance change pattern, the first luminance change pattern and the first luminance change pattern in the stated order.