Abstract: A sterilization system of an embodiment includes a light source unit, a horizontal angle adjustment unit and/or a vertical angle adjustment unit, and a controller. The light source unit emits ultraviolet rays in a radiating form. The horizontal angle adjustment unit adjusts a horizontal angle of the light source unit by causing rotation of the light source unit in a horizontal direction. The vertical angle adjustment unit adjusts a vertical angle of the light source unit by causing rotation of the light source unit in a vertical direction. The controller receives a marker signal transmitted from a marker via a marker sensor, controls rotation of the horizontal angle adjustment unit and/or the vertical angle adjustment unit to direct an optical axis of the light source unit to the marker, and stores a horizontal angle and/or a vertical angle of the light source unit in response to a position setting request.

Abstract: A sterilization system of an embodiment includes a light source unit, a horizontal angle adjustment unit and/or a vertical angle adjustment unit, and a controller. The light source unit emits ultraviolet rays in a radiating form. The horizontal angle adjustment unit adjusts a horizontal angle of the light source unit by causing rotation of the light source unit in a horizontal direction. The vertical angle adjustment unit adjusts a vertical angle of the light source unit by causing rotation of the light source unit in a vertical direction. The controller reads setting information including the horizontal angle and/or the vertical angle, controls the rotation caused by the horizontal angle adjustment unit and/or the vertical angle adjustment unit, and controls irradiation of the ultraviolet rays by the light source unit.

Abstract: To provide a remote control device for transmitting a light signal having a pulse pattern capable of reducing the possibility of false detection, a communication device including the remote control device and a sensor, a variable device further including an appliance whose state varies by tracking the remote control device, and a lighting device further including a moving light for illuminating the remote control device by tracking the remote control device. The remote control device transits a light signal having a pulse pattern to be detected by a sensor, in which the pulse pattern includes a first ON period, a second ON period, and an OFF period between the first ON period and the second ON period, the first ON period and the second ON period being repeated alternately, the first ON period and the second ON period are more than twice as long as a sampling time T of the sensor, the first ON period and the second ON period are different from each other, and the OFF period is longer than the sampling time T.

Abstract: A light source driving device includes: a storage unit that stores therein three or more combinations of a level indicating brightness of light emitted from a light source, and a control value used when light with brightness corresponding to the level is emitted, the control value having a nonlinear relation with the level; and a control unit that controls the light source so that the brightness of the emitted light is gradually changed to brightness corresponding to a level of a target indicated by a light control instruction signal, by calculating a level indicating the brightness of the emitted light between a level when a light control instruction signal is supplied and the level of the indicated target, by using two or more combinations for calculating the control value corresponding to the calculated level, among the stored combinations.

Abstract: To provide a remote control device for transmitting a light signal having a pulse pattern capable of reducing the possibility of false detection, a communication device including the remote control device and a sensor, a variable device further including an appliance whose state varies by tracking the remote control device, and a lighting device further including a moving light for illuminating the remote control device by tracking the remote control device. The remote control device transits a light signal having a pulse pattern to be detected by a sensor, in which the pulse pattern includes a first ON period, a second ON period, and an OFF period between the first ON period and the second ON period, the first ON period and the second ON period being repeated alternately, the first ON period and the second ON period are more than twice as long as a sampling time T of the sensor, the first ON period and the second ON period are different from each other, and the OFF period is longer than the sampling time T.

Abstract: A light source driving device includes: a storage unit that stores therein three or more combinations of a level indicating brightness of light emitted from a light source, and a control value used when light with brightness corresponding to the level is emitted, the control value having a nonlinear relation with the level; and a control unit that controls the light source so that the brightness of the emitted light is gradually changed to brightness corresponding to a level of a target indicated by a light control instruction signal, by calculating a level indicating the brightness of the emitted light between a level when a light control instruction signal is supplied and the level of the indicated target, by using two or more combinations for calculating the control value corresponding to the calculated level, among the stored combinations.

Abstract: The reproduction device comprises a decoding section, a threshold calculating section, and a musical data output section. The threshold calculating section calculates an average amplitude level in a predetermined section of an end portion of first musical data generated by the decoding section, and calculates a threshold for detecting a silent portion of the end portion of the first musical data on the basis of the calculated average amplitude level. The musical data output section removes a silent portion between the first musical data and the second musical data and reproduces them so that a position nearest to the end position of the first musical data at an amplitude level which is the threshold or more is a reproduction ending position and so that a position near the leading position of the second musical data at an amplitude level which is the threshold or more is a reproduction starting position.

Abstract: The reproduction device comprises a decoding section, a threshold calculating section, and a musical data output section. The threshold calculating section calculates an average amplitude level in a predetermined section of an end portion of first musical data generated by the decoding section, and calculates a threshold for detecting a silent portion of the end portion of the first musical data on the basis of the calculated average amplitude level. The musical data output section removes a silent portion between the first musical data and the second musical data and reproduces them so that a position nearest to the end position of the first musical data at an amplitude level which is the threshold or more is a reproduction ending position and so that a position near the leading position of the second musical data at an amplitude level which is the threshold or more is a reproduction starting position.