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1.发明申请公开(公告)号：US20180295691A1
公开(公告)日：2018-10-11
申请号：US15942934
申请日：2018-04-02
Inventor： Teruhito TAKEDA , Shigeaki YAMASAKI , Shojiro KIDO , Kazuo ITOH , Hiromichi GOTO , Hiroyuki NISHINO
IPC: H05B33/08 , H04B10/116 , H04B10/50
Abstract: An illumination light communication apparatus to be connected to a light source that emits illumination light due to a current from a constant current generation device, and that modulates the illumination light includes: a switch connected in series to the light source; a signal generator circuit that generates a binary communication signal which controls ON and OFF states of the switch to modulate the illumination light; a current suppression circuit that is connected in series to the light source and the switch, and that suppresses the current flowing in the light source so that a current setting value corresponding to a reference value is not exceeded; and a controller that can change an ON duty ratio of the switch through the communication signal. The controller changes the ON duty ratio of the switch during a transition period in which a current flowing in the current suppression circuit changes.
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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：US20160261342A1
公开(公告)日：2016-09-08
申请号：US15041545
申请日：2016-02-11
Inventor： Shigeaki YAMASAKI , Yoshihiko MATSUKAWA
IPC: H04B10/116
CPC classification number: H04B10/116
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 translation: 与包括图像传感器的接收机进行可见光通信的照明装置包括：划分单元，其将分配给所述照明装置的识别信息划分为N个分组（其中N是大于或等于2的自然数）; 产生每个包括N个分组中的每一个的M个分组（其中M是大于或等于N的自然数）的信号块的块生成器; 以及光源，其通过将每个信号块叠加到照明光上，在（i）图像传感器的每个帧周期中或（ii）基本上等于帧周期的整数倍的每个周期中顺序地发送信号块。 块生成器生成信号块，使得在信号块中的连续信号块之间布置M个分组的顺序是不同的。
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公开(公告)号：US20180248622A1
公开(公告)日：2018-08-30
申请号：US15893595
申请日：2018-02-10
Inventor： Shojiro KIDO , Shigeaki YAMASAKI
IPC: H04B10/116 , H04B10/50 , H04B10/80
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：US20170188420A1
公开(公告)日：2017-06-29
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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Patent Agency Ranking
公开(公告)号：US20170063457A1
公开(公告)日：2017-03-02
申请号：US15251124
申请日：2016-08-30
Inventor： Shigeaki YAMASAKI , Yoshihiko MATSUKAWA , Masaaki IKEHARA
IPC: H04B10/116 , H04W64/00 , G08B5/36 , H04B10/80
CPC classification number: H04B10/116 , G01C21/20 , G01C21/3661 , G01S5/16 , G08B7/066 , H04B10/80 , H04W4/02
Abstract: A mobile device includes: a communications circuit which performs wireless communication; a receiver which receives input of a destination from a user; an output which outputs guidance information for guiding the user from a current location to the destination; and a controller which causes the output to output notification information for notifying presence of a transmitting device which emits light for visible light communications, if the communications circuit receives a wireless signal from a transmitting device by the wireless communication.
Abstract translation: 移动设备包括：执行无线通信的通信电路; 从用户接收目的地的输入的接收机; 输出，其输出用于将用户从当前位置引导到目的地的引导信息; 以及控制器，如果通信电路通过无线通信从发送设备接收到无线信号，则使输出端输出通知信息，通知发送用于可见光通信的光的发送设备的存在。
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公开(公告)号：US20170263163A1
公开(公告)日：2017-09-14
申请号：US15450319
申请日：2017-03-06
Inventor： Shigeaki YAMASAKI , Masaaki IKEHARA
CPC classification number: G09F13/0413 , F21V11/00 , F21V23/0407 , G09F13/005 , G09F13/02 , G09F13/04 , G09F19/22 , G09F27/005 , G09F2013/0459 , H04B10/116 , H05B37/0218 , H05B37/0227 , H05B37/0245 , Y02B20/46
Abstract: A guide display device which is installed in a predetermined direction includes: a first screen which is parallel to the predetermined direction; a first light source which illuminates the first screen; a cover which is provided above the first screen in the predetermined direction and projects in a direction crossing the first screen to block light from above the guide display device and cast a shadow upon an area of the guide display device; a second light source which illuminates the area on which the shadow cast; and a controller which causes at least the second light source to perform optical communication.
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公开(公告)号：US20170063456A1
公开(公告)日：2017-03-02
申请号：US15249659
申请日：2016-08-29
Inventor： Shigeaki YAMASAKI , Masaaki IKEHARA
IPC: H04B10/116 , G01C21/36 , G06K9/00
CPC classification number: H04B10/116 , G01C21/3667 , G01S1/70 , G06K9/00671 , G06K9/3216
Abstract: Provided is a guidance display device which transmits predetermined information by visible light communications, the guidance display device including: a light source which emits light for visible light communications, the light including the predetermined information; a housing covering the light source and having a first light-exit surface which transmits the light emitted by the light source; a first guidance display on the first light-exit surface; and a first mark on the first light-exit surface, wherein the first mark has a shape corresponding to a total number of light-exit surfaces, including the first light-exit surface, of the guidance display device through which the light for visible light communications emitted by the light source exits.
Abstract translation: 提供一种通过可见光通信发送预定信息的引导显示装置，所述引导显示装置包括：发光用于可见光通信的光源，包括所述预定信息的光; 覆盖光源并具有透射由光源发射的光的第一光出射面的壳体; 在第一光出射表面上的第一引导显示; 和第一光出射面上的第一标记，其中，所述第一标记具有对应于所述引导显示装置的包括所述第一出射面的出射面总数的形状，所述引导显示装置通过所述导光显示装置的所述可见光的光 光源发出的通讯退出。
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公开(公告)号：US20160191157A1
公开(公告)日：2016-06-30
申请号：US14967775
申请日：2015-12-14
Inventor： Shigeaki YAMASAKI , Yosuke KONDO , Takashi OSUGI
IPC: H04B10/116 , H04B10/114
CPC classification number: H04B10/116
Abstract: A lighting device includes: a first light source which emits light that includes a visible light communication signal indicating first information; and a second light source which is disposed at a position different from a position of the first light source, and emits light that includes a visible light communication signal indicating second information different from the first information.
Abstract translation: 照明装置包括：第一光源，其发射包括指示第一信息的可见光通信信号的光; 以及第二光源，其设置在与所述第一光源的位置不同的位置，并且发射包括指示与所述第一信息不同的第二信息的可见光通信信号的光。
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公开(公告)号：US20150365173A1
公开(公告)日：2015-12-17
申请号：US14734334
申请日：2015-06-09
Inventor： Shigeaki YAMASAKI , Yoshihiko MATSUKAWA , Masaaki IKEHARA
CPC classification number: H04B10/116 , G06K19/06009 , G08B3/10 , H04B10/1149
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 translation: 管理工作人员的工人管理装置包括：主体; 设置在所述主体的在所述主体安装到所述工作服上时露出的部分上的光接收器，并且接收包括预定识别信息的光; 连接到光接收器的控制器; 以及连接到控制器的通信单元。
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