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公开(公告)号：US10545724B2
公开(公告)日：2020-01-28
申请号：US15546698
申请日：2015-12-30
申请人： SIGNIFY HOLDING B.V.
发明人： Adrianus Johannes Stephanus Maria De Vaan , Jan Van Wijgerden , Johan-Paul Marie Gerard Linnartz
摘要： A controller for granting a user input device control of a controllable device including a receiver arranged for receiving a first sound signal recorded within a first time frame by a first sound sensor and receiving a second sound signal recorded within a second time frame by a second sound sensor located at the user input device. The controller further includes a processor arranged for determining a level of similarity between the first sound signal and the second sound signal. The processor is further arranged for granting the user input device control of the controllable device if a sufficient level of similarity has been determined. This enables the controller to determine if the user input device is in the same space as the first sound sensor, and it allows the creation of a control space of the controllable device based on the characteristics of the first sound sensor.
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公开(公告)号：US10652970B2
公开(公告)日：2020-05-12
申请号：US16214499
申请日：2018-12-10
申请人： SIGNIFY HOLDING B.V.
摘要： An RF controlled lighting unit is provided, suitable for connection to at least one of a dimmer for adjusting a phase cut angle of input mains voltage in accordance with an adjustable dimming level or an electronic switch for selecting between on- and off-states. The lighting unit includes a solid state light source; a radio circuit for receiving a wireless control signal; a rectifier circuit for rectifying the input mains voltage received from the electronic switch or the dimmer; a first power converter for driving the solid state light source in response to the rectified input mains voltage and delivering power to the radio circuit; and a second power convertor for delivering power to the radio circuit when the rectified input mains voltage becomes inadequate for the first power converter due to the phase-cut angle of the rectified input mains voltage or the off-state of the electronic switch.
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公开(公告)号：US12081265B2
公开(公告)日：2024-09-03
申请号：US17766694
申请日：2020-10-05
申请人： SIGNIFY HOLDING B.V.
发明人： Andries Van Wageningen , Michel Germe , Johan-Paul Marie Gerard Linnartz , Paul Henricus Johannes Maria Voorthuisen , Matthias Wendt
IPC分类号： H04B10/114
CPC分类号： H04B10/114
摘要： According to one aspect disclosed herein, there is provided a client device for use in an optical wireless communications network, the client device comprising a transceiver configured to receive data via an optical wireless connection. The transceiver comprises an upward facing optical transducer configured to detect or transmit an optical wireless transmission, the sensor arranged to have a coverage area with at least two 5 concentric segments. A portion of the sensor is configured to provide an outermost segment of the at least two concentric segments.
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公开(公告)号：US10833765B2
公开(公告)日：2020-11-10
申请号：US16627436
申请日：2018-07-10
申请人： SIGNIFY HOLDING B.V.
发明人： Johan-Paul Marie Gerard Linnartz , Kumar Arulandu , Fernand Courtois , Xavier Chatel , Walter Jaudard
IPC分类号： H04B10/116 , H05B47/195 , H04B3/54 , H04B10/50
摘要： An uplink subsystem for use in an illumination system arranged for optical communication as well as the illumination system, the system comprising a downlink subsystem and the uplink subsystem. The uplink subsystem comprises sensors (e.g. infrared sensor) embedded in each luminaire in the group. The uplink subsystem also comprises a demodulator, and a distribution network for supplying the signals sensed to an adaptor to combine instances of the sensed uplink signal in a manner that takes into account a Time Division Medium Access scheme and a demodulator to demodulated the combined signal. The system further comprising a downlink subsystem that in turn comprises a modulator for generating a modulated waveform, and an optical fiber distribution network to distribute the modulated waveform to each luminaire in a group. Each such luminaire generates a drive current for driving a lighting element of that luminaire to emit light. Each also injects the modulated waveform into its drive current so as to embed the downlink signal in the emitted light.
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公开(公告)号：US12047120B2
公开(公告)日：2024-07-23
申请号：US17919550
申请日：2021-04-20
申请人： SIGNIFY HOLDING B.V.
IPC分类号： H04B10/58 , H04B10/114 , H04B10/116 , H04B10/516
CPC分类号： H04B10/58 , H04B10/1143 , H04B10/1149 , H04B10/116 , H04B10/516
摘要： A LiFi system having multiple transceivers (11) and a single multiple-input-multiple-output (MIMO) modem (41) with at least M outputs, wherein the M transmit outputs of the MIMO modem (41) are fed to a linear combiner (42). The linear combiner creates M distinct linear combinations based on the N MIMO transmit branch signals of the MIMO modem and the linear combinations are chosen such that they allow decoding of each of the 5 N MIMO transmit branch signals when N of the M distinct output signals are received.
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公开(公告)号：US12033358B2
公开(公告)日：2024-07-09
申请号：US17606135
申请日：2020-04-28
申请人： SIGNIFY HOLDING B.V.
发明人： Bianca Maria Irma Van Der Zande , Johan-Paul Marie Gerard Linnartz , Thijs Kruisselbrink , Alexander Rosemann , Rajendra Dangol
CPC分类号： G06T7/90 , G06T5/50 , G06T5/92 , G06T2207/10024 , G06T2207/20208 , G06T2207/20212
摘要： A method and computer device for determining a spatial luminance distribution over at least one image of a scene illuminated by at least one illuminant (121) are provided. The image comprises RGB channels. A linear combination of the RGB channels is applied to determine the luminance distribution. The linear combination has a set of coefficients comprising a respective coefficient for each of the RGB channels. The coefficients are determined by identifying a spectral power distribution, SPD, of the at least one illuminant and performing a search to determine values of the set of coefficients that minimise a spectral mismatch between: a) the identified SPD weighted by the linear combination; and b) the identified SPD weighted by a luminosity function.
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公开(公告)号：US11025341B2
公开(公告)日：2021-06-01
申请号：US16621100
申请日：2018-06-12
申请人： SIGNIFY HOLDING B.V.
发明人： Kumar Arulandu , Johan-Paul Marie Gerard Linnartz , Michel Germe , Amir Khalid , Olivia Qiu , David Derrien
IPC分类号： H04B10/116 , H05B45/40 , H05B33/08 , H05B47/19 , H05B45/305
摘要： An LED module (200) comprising: a first set of LEDs (D1) for emitting illumination to illuminate an environment, arranged within a first circuit path; a second set of one or more LEDs (D2) for emitting light, arranged within a second circuit path; both the first and second sets being powered by a portion of the power received via a same pair of input terminals, and the first circuit path being longer than the second circuit path; and filter circuitry (206, 208) arranged to filter a modulation in the power received via the terminals, the filtering comprising allowing a component of the modulation at a predetermined modulation frequency to be passed only to the second set of LEDs (D2) and not the first set (D1), thereby causing a corresponding signal to be embedded in the light emitted by the second set but not in the illumination emitted by the first set.
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公开(公告)号：US10602575B2
公开(公告)日：2020-03-24
申请号：US16341913
申请日：2017-10-11
申请人： SIGNIFY HOLDING B.V.
摘要： The invention provides a current modulating circuit, for example for use in a driving circuit for driving a lighting load such as an LED arrangement. A current modulating element is provided in series with the lighting load, and modulates the current based on a data input signal. A feedback system controls the current modulating element, and it has a first feedback control path which uses a voltage across the current modulating element, and a second feedback control path which uses the data input signal. The voltage feedback is used to maintain the overall current equal to the current output from a driver. The difference in current is taken up by a capacitor at the output of the driver.
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公开(公告)号：US12022589B2
公开(公告)日：2024-06-25
申请号：US17606272
申请日：2020-04-30
申请人： SIGNIFY HOLDING B.V.
IPC分类号： H05B47/125 , H05B47/11 , H05B47/175
CPC分类号： H05B47/125 , H05B47/11 , H05B47/175
摘要： A camera-based sensor device (200) and method for use in a controllable lighting system (100). The camera-based sensor device (200) comprises: a communications interface (203); a camera (201) for capturing images of a scene, each image comprising an array of pixels; and a processor (202). The processor (202) is configured to determine at least one light performance indicator, LPI, from an image captured by the camera (201). The LPI is a combined metric derived from a plurality of pixels of the array of pixels in the image. The processor (202) is configured to transmit, via the communications interface (203), the determined at least one LPI to the controllable lighting system (100) for use by the controllable lighting system (100) to make a control decision based on the LPI. The processor (202) does not transmit any of the images of the scene.
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公开(公告)号：US11942990B2
公开(公告)日：2024-03-26
申请号：US17911443
申请日：2021-03-08
申请人： SIGNIFY HOLDING B.V.
IPC分类号： H04B10/50 , H04B10/116
CPC分类号： H04B10/116 , H04B10/503
摘要： A tunable laser based light source for Li-Fi communication comprising a laser (1), a first optical element (3), and a second optical element (4). The first optical element (3) is configured to reflect and/or refract a scanning beam (2) emitted from the laser (1). The second optical element (4) is configured to broaden the scanning beam (2) reflected/refracted by the first optical element (3). The scanning beam (2) is configured to scan a scanning area extending with a first scanning length in a broadening direction (SI) and a second scanning length in a scanning direction (S2). The second optical element (4) is configured to broaden the scanning beam (2) in the broadening direction (S1) to a width larger than the first scanning length, and the laser (1) and the first optical element (3) are configured to cooperate to enable the scanning beam (2) to be swept along the scanning direction (S2).
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