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公开(公告)号：US20170231044A1
公开(公告)日：2017-08-10
申请号：US15503417
申请日：2015-08-10
发明人： Junhu LIU , Xiao SUN , Shan WANG , Xinghua HU
CPC分类号： H05B33/0842 , H05B33/0815 , H05B37/0245 , H05B37/0281
摘要： A driver is able to drive an analog interface module or a digital interface module, for example an LED module. A set of output pins is for connection to the module, with the same set of output pins used for an analog interface LED module as for a digital interface LED module. A detecting circuit detects whether the module is an analog module or a digital module, based on a signal at a control pin. The configuration of the driver is then set accordingly using an analog drive signal or using a digital communication interface for the LED module parameter collection. The driver further comprises a first switching circuit (20) for switching a supply voltage (V) to the power supply pin (VCC), and a second switching circuit (30) for coupling a supply voltage (V) to the control pin through a resistor (R6), wherein the detecting circuit (16) is configured to determine that the module is digital when the first switching circuit (20) supplies the supply voltage (V) to the power supply pin and the second switching circuit (30) isolates the supply voltage (V) from the control pin.
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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).
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公开(公告)号：US20160234902A1
公开(公告)日：2016-08-11
申请号：US15029722
申请日：2014-10-14
发明人： Junhu LIU , Harald Josef Gunther RADERMACHER , Jie FU , Xiao SUN
IPC分类号： H05B33/08
CPC分类号： H05B33/0845 , H05B33/0812 , H05B33/0815
摘要： The invention relates to a drive unit for a lighting element and an operating method for such drive unit and to a lighting element including such drive unit. By selectively providing power to a control unit of the drive unit using different voltages at different stages of the overall drive unit, there is an additional degree of freedom which may be used for improving power efficiency, in particular for reducing standby power consumption, while still meeting specific space and cost constraints.
摘要翻译： 本发明涉及用于照明元件的驱动单元和用于这种驱动单元的操作方法以及包括这种驱动单元的照明元件。 通过使用在整个驱动单元的不同阶段使用不同电压的驱动单元的控制单元选择性地提供电力，存在附加的自由度，其可以用于提高功率效率，特别是用于降低待机功耗，同时仍然 满足具体的空间和成本限制。
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