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公开(公告)号：US10084540B2
公开(公告)日：2018-09-25
申请号：US15893595
申请日：2018-02-10
Inventor： Shojiro Kido , Shigeaki Yamasaki
IPC: H04B10/00 , H04B10/116 , H04B10/80 , H04B10/50
CPC classification number: H04B10/116 , H04B10/502 , H04B10/801 , H04B10/808
Abstract: A visible light communication device includes: a light emitting device that emits visible light when current flows thereto; a power supply circuit that supplies the current that flows to the light emitting device; a switch that switches between ON and OFF states in which current does and does not flow to the light emitting device, respectively; a switch controller that controls the switch state; a voltage detector that detects an input voltage of the light emitting device; a threshold storage that stores information stipulating a threshold voltage; and a determiner that, when the switch is in the ON state and the voltage detector detects an ON voltage, determines whether the ON voltage satisfies a predetermined relationship with the threshold voltage stipulated by the information stored in the threshold storage. The switch controller further latches the switch in the OFF state when the determination by the determiner is affirmative.
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公开(公告)号：US10530477B2
公开(公告)日：2020-01-07
申请号：US16281142
申请日：2019-02-21
Inventor： Hiroyuki Nishino , Hiromichi Goto , Kazuo Itoh , Shojiro Kido , Teruhito Takeda
IPC: H04B10/116 , H04B10/50 , H04B10/54 , H05B33/08
Abstract: A visible light communication apparatus includes: an on/off switch connected in series to a load circuit including a light emitting diode; an impedance circuit connected in series to the on/off switch; a feedback circuit that feeds back an error between a voltage drop across the impedance circuit and a reference voltage potential to a voltage source as a feedback signal; a drive circuit that turns on and off the on/off switch in accordance with a communication signal which is a binary signal; an isolation circuit that transmits power while being electrically isolated; and an auxiliary power supply circuit that is connected between two output terminals of the voltage source, generates an auxiliary supply voltage, and supplies power based on the auxiliary supply voltage generated to the on/off switch and the drive circuit via the isolation circuit.
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Patent Agency Ranking
公开(公告)号：US11601298B2
公开(公告)日：2023-03-07
申请号：US15989831
申请日：2018-05-25
Inventor： Akihiro Kishimoto , Shojiro Kido
IPC: H04L12/28 , H04L41/08 , H04L41/22 , G06Q10/087 , G06K7/10
Abstract: There are provided an apparatus registration method capable of efficiently associating specific information about apparatuses and arrangement information about the apparatuses stored in an operation terminal, a program for implementing the method, and an apparatus system. A method for registration of luminaires associates a plurality of luminaires with items of arrangement information about the luminaires stored in an operation terminal for operating the luminaires. The method for registration of luminaires is adapted to include the steps of: consecutively reading at least two or more of items of specific information about the luminaires included in the luminaires using a RF reader; storing items of arrangement information about the luminaires into the operation terminal; and consecutively associating the at least two or more items of specific information consecutively read by the RF reader with at least two or more items of arrangement information among the items of arrangement information about the luminaires.
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公开(公告)号：US09814115B2
公开(公告)日：2017-11-07
申请号：US15388217
申请日：2016-12-22
Inventor： Shojiro Kido , Teruhito Takeda , Hiromichi Goto , Kazuo Itoh , Hiroyuki Nishino , Shigeaki Yamasaki
CPC classification number: H05B33/089 , H04B10/116 , H04B10/502 , H04B10/54 , H05B33/0818 , H05B33/0866 , H05B33/0872 , H05B37/0218
Abstract: An illumination light communication apparatus includes: a light source which emits illumination light; a power supply circuit for supplying constant current to the light source; a switch which is connected in series to the light source, and intermittently interrupts current which flows through the light source; a signal generating circuit which generates a binary communication signal which controls on and off of the switch to modulate the illumination light; and a current limiting circuit which is connected in series to the light source and the switch, and limits the current which flows through the light source to prevent the current from exceeding a current set value which is variable.
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公开(公告)号：US10588203B2
公开(公告)日：2020-03-10
申请号：US15984382
申请日：2018-05-20
Inventor： Akihiro Kishimoto , Shojiro Kido , Yukinori Uchida
Abstract: A light source driving device includes: a light emission control unit configured to control light emission of a light source in response to an instruction signal; a communication circuit which receives a first instruction signal instructing first light emission control for visible light communication; and a timer which starts to measure waiting time for executing the first light emission control, triggered by the reception of the first instruction signal. The light control unit starts the first light emission control of the light source in response to an instruction signal at the end timing of the waiting time.
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公开(公告)号：US09960847B2
公开(公告)日：2018-05-01
申请号：US15259772
申请日：2016-09-08
Inventor： Toshiya Moriwaki , Yoshiaki Ueno , Itaru Onishi , Shojiro Kido , Tamotsu Ando
Abstract: In an information presenting method, visible light including unique information, which is unique to a passenger carrier and specific to a location of the carrier, is emitted. The light is received in the passenger space and the unique information is obtained. One or more stop points at which the carrier is currently stopped or is to subsequently stop are obtained. The one or more stop points are derived from the unique information. An alighting point at which a user is to alight from the carrier is obtained. Whether the alighting point is included in the one or more stop points is determined. Alighting information notifying the user to alight from the bus is presented to the user via a terminal, when the alighting point is determined to be included in the one or more stop points.
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公开(公告)号：US09842477B2
公开(公告)日：2017-12-12
申请号：US15495486
申请日：2017-04-24
Inventor： Shojiro Kido , Kazuhiro Hatta
CPC classification number: H05B33/0857 , G08B5/36 , G08B13/00 , H05B37/0227 , H05B37/0272
Abstract: A lighting device includes: a light source switchable between illumination modes; a human detector which detects a person in a detection area in an illumination area of the light source; an ID reader which wirelessly reads an identification stored in an RF tag in a read area corresponding to the detection area; and a controller communicably connected to the light source, the human detector, and the ID reader. The controller obtains from the human detector human detection information indicating that one or more persons are present, obtains from the ID reader one or more identifications read by the ID reader when the human detector detects the one or more persons, and applies one mode of the illumination modes to the light source based on the human detection information and one or more identifications obtained, and the light source performs illumination in the applied mode.
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