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公开(公告)号：US20200381886A1
公开(公告)日：2020-12-03
申请号：US16867128
申请日：2020-05-05
Inventor： Hirofumi KONISHI , Shigeaki YAMASAKI , Erika KAWABATA , Yoshiharu NAGATANI , Hiroshi KITANO
Abstract: A light source device according to an embodiment is used with a light guide member and a wavelength converting member, and includes a light-emitting element, a light sensor, and a driving unit. The light-emitting element radiates a light beam to be incident on a first end of the light guide member by being supplied with a drive current. The light sensor detects signal light, which has been incident on a second end of the light guide member and transmitted to the first end. The driving unit supplies the drive current to the light-emitting element and controls the drive current based on a result of detection of the signal light.
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公开(公告)号：US20180035504A1
公开(公告)日：2018-02-01
申请号：US15637449
申请日：2017-06-29
Inventor： Hirofumi KONISHI , Masashi MOTOMURA
CPC classification number: H05B33/0845 , H05B33/0815 , H05B33/0884 , H05B37/0209 , H05B37/0263 , H05B37/0272
Abstract: A signal transmitter includes a power supply, an external signal receiver and a communication controller. The external signal receiver is configured to receive an external instruction signal that represents a lighting state of the light fixture based on an output of a sensor configured to detect a state of a lighting space illuminated by the light fixture. The communication controller is configured to change an output voltage level of the power supply to transmit, to the light fixture, a transmission signal for setting the light fixture to the lighting state represented by at least the external instruction signal.
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13.发明申请公开(公告)号：US20170318634A1
公开(公告)日：2017-11-02
申请号：US15494604
申请日：2017-04-24
Inventor： Masashi MOTOMURA , Hirofumi KONISHI , Kenichi FUKUDA
IPC: H05B33/08 , H02M7/04 , F21V23/06 , F21V21/34 , F21V3/00 , F21S8/04 , H05B37/02 , H02M3/158 , F21Y2115/10
CPC classification number: H05B33/0815 , F21S8/046 , F21V3/00 , F21V21/34 , F21V23/06 , F21Y2115/10 , H02M3/158 , H02M3/1588 , H02M7/04 , H02M2001/0048 , H05B33/0845 , H05B37/02
Abstract: A signal transmitting device includes an input unit, an output unit, and a step-down circuit. The input unit is configured to receive an input voltage. The output unit is configured to output an output voltage. The step-down circuit is configured to controllably adjust the output voltage by stepping down the input voltage. The step-down circuit includes first and second capacitors, a switch circuit, an inductor, first and second diodes, and a control circuit. The switch circuit includes a series circuit of first and second switches. The control circuit is configured to control the first and second switches to change a voltage value of the output voltage in order to transmit transmission data from the output unit.
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公开(公告)号：US20170188421A1
公开(公告)日：2017-06-29
申请号：US15373324
申请日：2016-12-08
Inventor： Masashi MOTOMURA , Hirofumi KONISHI , Kenichi FUKUDA
CPC classification number: H05B33/0815 , H05B33/0845 , H05B37/0272
Abstract: The signal transmitting device includes: a transmitter-side input for receiving a first DC voltage; a transmitter-side output for outputting a second DC voltage; and a voltage conversion circuit configured to convert the first DC voltage into the second DC voltage. Further, the signal transmitting device includes a control circuit configured to control the voltage conversion circuit so that the second DC voltage has a voltage value (selected from a first voltage value and a second voltage value) which changes according to transmission data in a predetermined transmission period.
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