-
公开(公告)号：US20210307147A1
公开(公告)日：2021-09-30
申请号：US16319583
申请日：2017-07-13
发明人： George Bradley MILLS
IPC分类号： H05B47/185 , H04B3/54 , H05B47/165
摘要： A system (and system controller) has powering of, and communication with, a set of fixtures using an AC cable having a power line (e.g. a mains live wire), a reference line (e.g. a mains neutral wire) and a data line. Fixtures are at different positions along the cable, each powered by the local voltage difference between the power line and the reference line. A system controller provides a data signal over the data line, wherein the data signal for a fixture is defined by the local voltage difference between the data signal on the data line and the reference line (or power line). In order to compensate for voltage drops, a compensation circuit adds a voltage offset waveform to the data signal which is dependent on the overall set of positions of the fixtures. This enables an increased number of fixtures and/or reach of the fixtures connected to the system controller.
-
公开(公告)号：US20210289321A1
公开(公告)日：2021-09-16
申请号：US16321636
申请日：2017-07-11
IPC分类号： H04W4/02
摘要： It is an object of the invention to provide an improved device for location based services. Thereto, the invention provides a device (100) for location based services comprising: a sensor for sensing an orientation (10, 20) of the device (100); a processor for receiving the orientation (10, 20) of the device (100) and for running a first application (111) related to the group of mapping, positioning and navigation and a second application (112) other than the first application (111); a display (600) for displaying output of applications; wherein the processor is arranged for running the first application (111) when the device (100) is in a first orientation (10) and the second application (112) when the device (100) is in a second orientation (20); and wherein, the device (100) is in the first orientation (10) if the display (600) is within 30 degrees of a plane perpendicular to gravity, the device (100) is in the second orientation (20) if the display (600) is within 30 degrees of a plane parallel to gravity.
-
公开(公告)号：US20210219400A1
公开(公告)日：2021-07-15
申请号：US16081739
申请日：2017-03-23
发明人： Bernd ACKERMANN , Christian HATTRUP
摘要： The invention provides a conversion circuit for converting first signals coming from a fluorescent ballast into second signals for feeding a light circuit via a rectifier circuit, the light circuit comprising at least one light emitting diode. The conversion circuit has an inductor in a parallel branch between the two-terminal input or the two-terminal output. This enables the ballast output power be reduced without significant increase in losses. The conversion circuit is for enabling retrofit of LEDs to fluorescent ballasts.
-
公开(公告)号：US10985930B2
公开(公告)日：2021-04-20
申请号：US16087148
申请日：2017-03-16
IPC分类号： H04L12/10 , G06F1/3203 , G06F1/3209 , H04L12/24 , G01R21/133
摘要： The invention relates to a PoE system, which comprises a powered device (2) and a power sourcing device (1). The power sourcing device comprises one or more ports (12) and the powered device is connectable to a port of the power sourcing device by an electrical conductor (13) for conveying the sourced power along with data. The powered device comprises an interface for providing a measure of its energy consumption within the PoE system and, if it does not have the ability to measure its energy consumption, is adapted to negotiate with the power sourcing device whether the power sourcing device has the ability to measure the energy consumption of the powered device and to provide the measured energy consumption to the powered device for provision via the interface. This can make the PoE system more flexible and allow for a single “point of contact” for providing energy usage feedback.
-
公开(公告)号：US20210022226A1
公开(公告)日：2021-01-21
申请号：US16074172
申请日：2017-01-30
IPC分类号： H05B47/11 , G01J5/12 , G01J5/28 , H05B47/115 , E06B9/32
摘要： A method and corresponding system is disclosed in which the overall illuminance of an environment is analyzed to in order to detect and quantify the daylight component of the illuminance. The invention utilizes a combination of visual and non-visual sensors and a signal processing algorithm that filters and analyzes the sensor data.
-
公开(公告)号：US10827524B2
公开(公告)日：2020-11-03
申请号：US10561457
申请日：2004-06-22
IPC分类号： H04W74/08 , H04L12/407 , H04W84/18
摘要： A method of decentralized medium access control in a communications network consisting of a plurality of stations, wherein a sending station transmits a reservation request for a future transmission to an intended receiving station, said intended receiving station being in a reception range of said sending station, said reservation request signalling reservation information including starting point and duration of the transmission, defining a time period of said future transmission, and, in case of a multi-channel system, frequency or code of the channel of said future transmission, so establishing a reservation, and stations active in said reception range overhear said reservation request and other stations than said intended receiving station perform the actions of storing said reservation information locally and defer from medium access during the time period and on the channel of the future transmission.
-
公开(公告)号：US20190342979A1
公开(公告)日：2019-11-07
申请号：US15780778
申请日：2016-11-28
发明人： Junhu LIU , Zhi Quan CHEN , Biwen XU , Gang G. WANG , Gang K. WANG
IPC分类号： H05B37/02 , H05B33/08 , H02J7/00 , H04B10/116 , H04B10/524 , H04B10/40 , G08C23/04
摘要： The invention describes a coded light modulation arrangement (1), adapted to be connected between a driver (31) and a LED (3), which coded light modulation arrangement (1) comprises input terminals (10) adapted to connect to the driver (31) and to receive a drive current (IDRIVE), an energy storage arrangement comprising a number of energy storage devices (E1, E2); a data input interface (12) realized to receive a data stream (D), said data stream (D) comprises a sequence of binary symbols comprising a logic high and a logic low; a switch arrangement comprising a number of switches (S1, S2) arranged to connect the energy storage devices (E1, E2) of the energy storage arrangement and to modulate the drive current such that, in a charging switch configuration corresponding to the logic low, a negative modulation current (INEG) is diverted from a drive current (IDRIVE) of the LED (3) to the energy storage arrangement; and, in a discharging switch configuration corresponding to the logic high, a positive modulation current (IPOS) is drawn from the energy storage arrangement and added to the drive current (IDRIVE) of the LED (3); and output terminals (11) adapted to connect to the LED (3) and to provide the modulated drive current directly to the LED (3) to emit the low and high radiant flux level as coded light (Lcoded) to be received by a photosensor of a coded light receiver device. The invention further describes a method of performing coded light modulation for light emitted by a LED (3), a luminaire; and a coded light communication arrangement (5).
-
公开(公告)号：US20190174610A1
公开(公告)日：2019-06-06
申请号：US16304710
申请日：2017-05-19
摘要： A method and apparatus for controlling illumination of a monitored area, by detecting sound (202) originating from an area to be monitored, and analysing the sound to recognise one or more target sounds (222) corresponding to unwanted behaviours such as offensive shouting, chanting or singing. The location of target sounds is determined (224) based on the received sound, and the determined location is exposed to adverse lighting (212), such as over or under exposure, or flickering or flashing effects, which are irritating or uncomfortable.
-
公开(公告)号：US20190132738A1
公开(公告)日：2019-05-02
申请号：US16094277
申请日：2017-04-12
发明人： ZHIZHONG ZHANG , HOWARD QUE , SHUMING HUANG , LINCHUN DU , JUNJUN ZHANG , MARK HENRICUS VERBERKT
摘要： Disclosed are systems and methods for authenticating a wireless module. A method comprises the steps of: (i) generating (1332), by the wireless module (112A), a first encryption value, and retrieving a unique identifier of the wireless module from memory; (ii) verifying (1334), by the wireless module, the generated first encryption value and retrieved unique identifier; (iii) sending (1336), by the wireless module, the retrieved unique identifier and a second encryption value to the gateway (110A); (iv) verifying (1338), by the gateway, the received unique identifier and second encryption value, wherein verifying the second encryption value authenticates the wireless module; (v) sending (1340), by the gateway, a third encryption value to the wireless module; and (vi) verifying (1342), by the wireless module, the received third encryption value, wherein verifying the third encryption value authenticates the gateway.
-
公开(公告)号：US20190132329A1
公开(公告)日：2019-05-02
申请号：US16094283
申请日：2017-04-12
摘要： Disclosed is a computing cloud for monitoring physical environments. The computing cloud comprises at least one data storage unit that is configured to store project data, diagnostic data or environmental metric data. The computing cloud also comprises a system project application module that is configured to allow a user to graphically explore at least the project data, and to control graphical access to one or more application modules based on a user's credentials. The one or more application modules comprise a module that is configured to graphically facilitate the user's creation and manipulation of a virtual model of a physical environment.
-
-
-
-
-
-
-
-
-
搜索结果
993 条记录 (耗时 0.033 秒)
