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公开(公告)号：US09468053B1
公开(公告)日：2016-10-11
申请号：US15075396
申请日：2016-03-21
Inventor： Shojirou Kido , Yohei Hayashi
CPC classification number: H05B33/0845 , H05B33/0824 , H05B33/0848
Abstract: A lighting device includes: a drive circuit that supplies power to a light source; a switch connected in series with the light source; and a controller that controls pulse modulation for visible light communication executed through switching ON and OFF of the switch in a first interval, and stops the pulse modulation in a second interval. The controller controls a peak value, which is a high value of a pulsed current supplied from the drive circuit to the light source, to match an average current value in the first interval with an average current value in the second interval.
Abstract translation: 照明装置包括：向光源供电的驱动电路; 与光源串联的开关; 以及控制器，其通过在第一间隔中切换开关的ON和OFF来控制可见光通信的脉冲调制，并且在第二间隔中停止脉冲调制。 控制器控制从驱动电路向光源提供的脉冲电流的高值的峰值，以使第一间隔中的平均电流值与第二间隔中的平均电流值相匹配。
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2.发明授权公开(公告)号：US09413458B2
公开(公告)日：2016-08-09
申请号：US14619302
申请日：2015-02-11
Inventor： Yosuke Kondo , Masaaki Ikehara , Shojirou Kido
IPC: H04B10/00 , H04B10/116
CPC classification number: H04B10/116
Abstract: An illumination light communication apparatus includes: a light source; a power supply circuit; a switching element which modulates an output current supplied from the power supply circuit to the light source; a visible light communication signal circuit which controls ON and OFF of the switching element to output a modulating signal for superimposing a visible light beacon signal including a unique ID onto the illumination light emitted from the light source; a control power supply circuit which supplies power to the visible light communication signal circuit; a wireless module which transmits a radio wave beacon signal including a unique ID; and a radio wave beacon controlling and transmitting circuit which controls the radio wave beacon signal transmitted from the wireless module, wherein the radio wave beacon controlling and transmitting circuit is supplied with power from the control power supply circuit.
Abstract translation: 一种照明光通信装置，包括：光源; 电源电路; 开关元件，其对从所述电源电路供给到所述光源的输出电流进行调制; 控制开关元件的接通和断开的可见光通信信号电路，输出用于将包含唯一ID的可见光信标信号叠加在从光源发出的照明光上的调制信号; 向所述可见光通信信号电路供电的控制电源电路; 发送包括唯一ID的无线电波信标信号的无线模块; 以及无线电波信标控制和发送电路，其控制从无线模块发送的无线电波信标信号，其中从控制电源电路向无线电波信标控制和发送电路供电。
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公开(公告)号：US09590729B2
公开(公告)日：2017-03-07
申请号：US14442789
申请日：2013-11-01
Inventor： Shigeaki Yamasaki , Shojirou Kido , Yosuke Kondo
IPC: H04B10/116 , H04L7/00 , H04B10/11
CPC classification number: H04B10/116
Abstract: A controller is configured, by decreasing light quantity in only a first slot that is any one of a plurality of slots into which a unit time is divided equally, and increasing light quantity in all the remaining slots except the first slot of the plurality of slots, to assign information to the first slot of the plurality of slots. The controller is furthermore configured to decrease light quantity in second slots that are three or more continuous slots starting from a head of a preamble, which indicates a frame start point, of a frame of an optical-communication signal and to increase light quantity in a slot immediately before the preamble.
Abstract translation: 控制器被配置为通过仅减少作为单位时间被均等地分配的多个时隙中的任何一个的第一时隙中的光量，并且增加除了多个时隙中的第一时隙之外的所有剩余时隙中的光量 以将信息分配给多个时隙的第一时隙。 此外，控制器还被配置为减少第二时隙中的光量，其是从指示帧起始点的前导码的头部开始的三个或更多个连续时隙的光通信信号的帧，并且增加光通信信号的光量 前面的插槽。
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公开(公告)号：US10103810B2
公开(公告)日：2018-10-16
申请号：US15075420
申请日：2016-03-21
Inventor： Shojirou Kido , Yohei Hayashi
IPC: H04B10/11 , H04B10/116 , H05B33/08 , G09F9/00
Abstract: A signboard apparatus includes: light panel apparatuses arranged two-dimensionally, and each having a transmission function and a light-emitting face for visible light communication; and a control apparatus that performs, with respect to the light panel apparatuses, exclusive control of the transmission function. The light panel apparatuses are arranged as a collective signboard.
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Patent Agency Ranking
公开(公告)号：US09825704B2
公开(公告)日：2017-11-21
申请号：US15160089
申请日：2016-05-20
Inventor： Shojirou Kido , Yoshihiko Matsukawa
IPC: H04B10/00 , H04B10/116 , H04B10/40 , H04B10/80
CPC classification number: H04B10/116 , H04B10/40 , H04B10/808
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.
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公开(公告)号：US09763304B2
公开(公告)日：2017-09-12
申请号：US15259638
申请日：2016-09-08
Inventor： Shojirou Kido
IPC: H05B33/08 , H05B37/02 , H04B10/116
CPC classification number: H05B33/0854 , H04B10/116 , H05B33/0815 , H05B37/0227 , H05B37/0272
Abstract: A visible light communication apparatus includes: a light source; a power source circuit which applies a voltage to an electric path for causing the light source to emit light; a modulation circuit which causes the light source to emit light modulated by a communication signal; and a function circuit section which is connected to the electric path and performs a predetermined function by operating on a current flowing through the electric path, the function circuit section operating on a voltage lower than a first voltage value which is a lowest voltage value at which the light source emits light and higher than or equal to a second voltage value, wherein the power source circuit further applies to the electric path the voltage lower than the first voltage value and higher than or equal to the second voltage value.
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公开(公告)号：US09831949B2
公开(公告)日：2017-11-28
申请号：US15167385
申请日：2016-05-27
Inventor： Yoshihiko Matsukawa , Shojirou Kido
CPC classification number: H04B10/116 , H04B10/40 , H04B10/50 , H04L7/0075 , H05B33/0842 , H05B37/0209
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.
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公开(公告)号：US09780875B2
公开(公告)日：2017-10-03
申请号：US14843458
申请日：2015-09-02
Inventor： Masahiro Naruo , Shojirou Kido
IPC: H05B37/02 , H05B39/00 , H04B10/116 , H05B33/08
CPC classification number: H04B10/116 , H05B33/0845 , H05B37/0272
Abstract: A visible light communication modulation circuit includes a modulation resistance circuit configured to change a current flowing through an LED light source by changing a resistance thereof, a measurement circuit configured to simultaneously measure a voltage applied to the LED light source and the current flowing through the LED light source at least twice until the current is stabilized, an calculation circuit configured to obtain an equivalent series resistance of the LED light source based on at least two sets of voltage values and current values and determine a target resistance of the modulation resistance circuit based on the equivalent series resistance and a predetermined modulation degree, and a conversion circuit configured to change the resistance of the modulation resistance circuit based on the target resistance.
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公开(公告)号：US09746542B2
公开(公告)日：2017-08-29
申请号：US14823195
申请日：2015-08-11
Inventor： Masaaki Ikehara , Shojirou Kido , Yosuke Kondo
IPC: H04B10/116 , H04B10/114 , G01S1/04 , H04W4/02 , G01S1/70 , G01S5/02
CPC classification number: G01S1/042 , G01S1/70 , G01S5/0263 , H04B10/1141 , H04B10/116 , H04W4/02
Abstract: A lighting apparatus that is used in a positioning system and is locatable in plural number in a limited area is provided. The lighting apparatus for use in the positioning includes a power supplier that supplies power, a lighting unit that is lit by the power supplied by the power supplier, and a beacon transmitter. The beacon transmitter operates by the power supplied by the power supplier, and transmits a beacon that is a signal for positioning. The beacon includes a long-distance beacon transmitted with first transmission power and a short-distance beacon transmitted with a second transmission power less than the first transmission power. The beacon transmitter transmits at least the long-distance beacon intermittently.
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