Abstract: A visible light communication apparatus includes a constant current circuit and a load circuit including light emitting elements connected to output terminals of the constant current circuit. Further, the visible light communication apparatus includes a load variation circuit configured to change load characteristics of the load circuit by electrically connecting to the load circuit, the load variation circuit including a series circuit of a diode and a resistor connected in series to the load circuit and a switching element configured to electrically connect or disconnect the load variation circuit to the load circuit in response to a binary communication signal.

Abstract: A modulation device includes a modulator circuit that causes a light source to perform light communication, storage storing an internal ID, and a control circuit that determines whether an external ID is input into the modulation device. When the control circuit determines that the external ID is input into the modulation device, the control circuit causes the input external ID to be input, as a modulation signal, into the modulator circuit. When the control circuit determines that the external ID is not input into the modulation device, the control circuit causes the internal ID stored in the storage to be input, as a modulation signal, into the modulator circuit.

Abstract: A modulation device includes: a modulation ID signal generator that generates a first ID signal including first identification information; a reception terminal capable of receiving a second ID signal including second identification information; a transmission terminal capable of transmitting the first ID signal and the second ID signal out of the modulation device; a detector that detects a received state in which the second ID signal is received by the reception terminal and an unreceived state in which the second ID signal is not received by the reception terminal; and a switch circuit that outputs the first ID signal to the transmission terminal when the detector detects the unreceived state and outputs the second ID signal to the transmission terminal when the detector detects the received state.

Abstract: A mobile terminal includes: an image capturer which captures a video of one or more lighting devices each transmitting identification information of the lighting device through visible light communication; an input device which obtains an indication from an operator; a wireless communicator which wirelessly communicates with lighting devices; and a controller which controls the image capturer, the input device, and the wireless communicator, wherein the controller detects, by analyzing a video obtained by the image capturer, identification information of a lighting device included in the video, and if the input device obtains an operation indication directed to the lighting device, transmits a control signal corresponding to the operation indication via the wireless communicator to the lighting device (at least one of the lighting devices) having the detected identification information.

Abstract: A Lighting device, which performs visible light communication with a receiver including an image sensor, includes: a dividing unit that divides identification information assigned to the lighting device into N packets (where N is a natural number greater than or equal to 2); a block generator that generates signal blocks each of which includes M packets (where M is a natural number greater than or equal to N) that include at least one of each of the N packets; and a light source that sequentially transmits the signal blocks in (i) each frame cycle of the image sensor or in (ii) each cycle substantially equal to an integral multiple of the frame cycle, by superimposing each of the signal blocks onto illumination light. The block generator generates the signal blocks so that an order of arranging the M packets is different between consecutive signal blocks in the signal blocks.

Abstract: A visible light communication system includes: an illumination device which emits visible light including identification information; an information presentation apparatus which presents information to a person in a range illuminated by the visible light; an information terminal which receives visible light identification information; and an information recording medium which holds pairing information associating the identification information identifying the illumination device with connection information required for connection via wireless communication with the information presentation apparatus. When the information terminal is illuminated by the visible light, the information terminal refers to the pairing information held in the information recording medium to identify the connection information associated with the identification information included in the visible light, and establishes connection with the information presentation apparatus based on the identified connection information.

Abstract: A worker management device that manages a worker wearing workwear includes: a main body; a light receiver that is provided on a part of the main body that is exposed when the main body is attached to the workwear, and receives light including predetermined identification information; a controller connected to the light receiver; and a communication unit connected to the controller.

Abstract: An optical signal receiver receives an optical signal superimposed on illumination light from an illumination apparatus which repetitively transmits as the optical signal a frame including predetermined information and a preamble indicating the start of the frame. Further, the optical signal receiver includes a light receiving unit configured to receive the optical signal, and a controller configured to control the light receiving unit based on the optical signal received by the light receiving unit such that the optical signal receiver operates in either one of an intermittent reception mode of intermittently receiving the optical signal and a continuous reception mode of continuously receiving the optical signal.

Abstract: A receiving device includes a first conversion unit, an amplification unit, and a microcomputer. The microcomputer includes: a second conversion unit that performs, for each sampling time duration, AD conversion on a voltage signal into an AD-converted value; a first calculation unit that calculates a difference digital value by difference calculation; a second calculation unit that calculates a positive reference value and a negative reference value; a detection unit that detects a rising point starting difference digital values greater than the positive reference value, and a falling point starting difference digital values smaller than the negative reference value; a third calculation unit that calculates a first sample period and a second sample period; and a fourth calculation unit that calculates a modulated signal for each symbol time period based on the first sample period and the second sample period.

Abstract: A visible light communication apparatus includes a constant current circuit and a load circuit including light emitting elements connected to output terminals of the constant current circuit. Further, the visible light communication apparatus includes a load variation circuit configured to change load characteristics of the load circuit by electrically connecting to the load circuit, the load variation circuit including a series circuit of a diode and a resistor connected in series to the load circuit and a switching element configured to electrically connect or disconnect the load variation circuit to the load circuit in response to a binary communication signal.

Abstract: A first luminaire 22 emits visible light 22a including, as information, an illumination ID for specifying a location in a facility. Photoreceivers 23 to 26, which prestore target IDs, transmit the illumination ID based on the visible light 22a and the prestored target IDs as data when receiving the visible light 22a. A processing unit 30 associates the photoreceivers 23 to 26 located in the illumination area of the same first luminaire 22 based on the data transmitted from the photoreceivers 23 to 26. Treatment is authenticated by deciding whether or not a combination of the associated photoreceivers 23 to 26 matches a combination of the photoreceivers based on a treatment order.

Abstract: A receiving device includes a first conversion unit, an amplification unit, and a microcomputer. The microcomputer includes: a second conversion unit that performs, for each sampling time duration, AD conversion on a voltage signal into an AD-converted value; a first calculation unit that calculates a difference digital value by difference calculation; a second calculation unit that calculates a positive reference value and a negative reference value; a detection unit that detects a rising point starting difference digital values greater than the positive reference value, and a falling point starting difference digital values smaller than the negative reference value; a third calculation unit that calculates a first sample period and a second sample period; and a fourth calculation unit that calculates a modulated signal for each symbol time period based on the first sample period and the second sample period.

Abstract: A manipulator is provided with an arm, an arm, a holding section, a first joint section pivotally interconnecting the arm and the arm, a second joint section pivotally interconnecting the arm and the holding section, a first joint driving section capable of driving the first joint section, a second joint driving section capable of driving the second joint section, a member specifying section for specifying one of the arms which has a possibility of collision with an obstacle or which has collided with the obstacle, and a control device for controlling the first joint driving section and the second joint driving section to pivotally move the one of the arms specified by the member specifying section in a direction away from the obstacle, and pivotally move the other of the arms in a direction toward the obstacle.

Abstract: A tablet inspection device includes a lighting unit configured to emit parallel light to a medicine package enclosing therein a semi-transparent tablet that is capable of transmitting light, a camera unit configured to capture an image of the medicine package irradiated with the parallel light, so as to obtain a transmission image of the medicine package, and an image processing unit configured to detect, as an area of the semi-transparent tablet, an area having a center part and a periphery part which has brightness lower than brightness of the center part, in the transmission image.

Abstract: A medicine pack inspecting system includes a packing instruction unit that generates packing instruction information, a tablet packing unit that encloses tablets in a medicine pack, an image capturing unit that generates a medicine pack image, and a tablet inspecting unit that inspects the number of tablets enclosed in the medicine pack by performing pattern matching using the medicine pack image and a tablet pattern shown in the packing instruction information, wherein when the packing instruction information includes information on an irregular shaped tablet, the tablet inspecting unit inspects the number of an irregular shaped tablet by performing pattern matching using an irregular shaped tablet pattern of the irregular shaped tablet and the medicine pack image.

Abstract: An autonomous mobile device has its movement controlled by a control device and includes a first sensing unit for sensing an obstacle. The control device includes a first storage unit for storing information as to a temporary positional fluctuation of the obstacle and sets as a virtual obstacle region a region where it is predicted that the obstacle sensed by the first sensing unit travels following a predetermined time passage based on the information as to the temporary positional fluctuation of the obstacle stored in the first storage unit.

Abstract: A structure is provided with a first member at a base end side, a third member at a leading end side, a second member arranged between the first and third members, and a coupling force generator for generating a first coupling force for pressing an end surface of the first member and that of the second member against each other and a second coupling force for pressing an end surface of the second member and that of the third member against each other. In this structure, the first and third members are relatively displaced upon the application of an external force larger than a coupling force generated between the end surface of the first member and that of the second member by the first coupling force, whereas the second and third members are relatively displaced upon the application of an external force larger than a coupling force generated between the end surface of the second member and that of the first member by the second coupling force.

Abstract: A manipulator includes a main unit movable to a specified target position, an arm unit rotatably provided on the main unit, and a posture controller. The posture controller controls the posture of the arm unit so that a front surface of the arm unit facing forward in a moving direction of the main unit is not orthogonal to the moving direction of the main unit when the movement of the main unit is performed. The arm unit may be inclined obliquely backward with respect to a moving direction of the main unit when the main unit is moved to a specified target position.

Abstract: A medicine inspection support system, which provides a reliable inspection of medicine preparation, includes a person authentication unit, a preliminary inspection unit, an inspection unit, and an inspector check unit. The person authentication unit identifies a preliminary inspector who performs a preliminary inspection of medicine preparation, and an inspector who performs an inspection of the medicine preparation. The preliminary inspection unit certifies that the preliminary inspector has performed the preliminary inspection of the medicine preparation. The inspection unit certifies that the inspector has performed the inspection of the medicine preparation. The inspector check unit permits the inspection unit to certify completion of the inspection when determined that the inspector is a different person from the preliminary inspector.

Abstract: A tablet inspection apparatus includes: a transmitted illumination unit configured to emit infrared light to a medicine packet made of two films from a side of the films; a reflected illumination unit configured to emit infrared light from the other side of the two films; a camera unit configured to obtain a transmission image by imaging the medicine packet, in a state where the transmitted illumination unit is emitting infrared light and the reflected illumination unit is not emitting infrared light, and obtain a reflection image by imaging the medicine packet, in a state where the reflected illumination unit is emitting infrared light and the transmitted illumination unit is not emitting infrared light; and a calculation unit configured to generate an inspection image from a difference image between the reflection image and the transmission image.