公开(公告)号：WO2017093170A1

公开(公告)日：2017-06-08

申请号：PCT/EP2016/078966

申请日：2016-11-28

Applicant: PHILIPS LIGHTING HOLDING B.V.

Inventor： LIU, Junhu ,  CHEN, Zhi, Quan ,  XU, Biwen ,  WANG, Gang, G, ,  WANG, Gang, K,

IPC: H05B37/02 ,  H02J7/00 ,  H04B10/116

CPC classification number: H05B37/0272 ,  H02J7/0024 ,  H04B10/116

Abstract: 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 (I DRIVE ), 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 (I NEG ) is diverted from a drive current (I DRIVE ) of the LED (3) to the energy storage arrangement; and, in a discharging switch configuration corresponding to the logic high, a positive modulation current (I POS ) is drawn from the energy storage arrangement and added to the drive current (I DRIVE ) 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 (L coded ) 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).

Abstract translation: 本发明描述了适于连接在驱动器（31）和LED（3）之间的编码光调制装置（1），该编码光调制装置（1）包括输入端子 ），其适于连接到所述驱动器（31）并且接收驱动电流（I DRIVE）;能量存储装置，其包括多个能量存储装置（E1，E2）; 被实现为接收数据流（D）的数据输入接口（12），所述数据流（D）包括包括逻辑高和逻辑低的二进制符号序列; 开关装置，包括布置成连接能量存储装置的能量存储装置（E1，E2）并且调制驱动电流的多个开关（S1，S2），使得在对应于逻辑低的充电开关配置中， 负的调制电流（I NEG）从LED（3）的驱动电流（I DRIVE）转移到能量存储装置; 并且在对应于逻辑高的放电开关配置中，从能量存储装置汲取正调制电流（I POS），并将其添加到驱动电流（I DRIVE >）的LED（3）; 和适于连接到LED（3）并且将经调制的驱动电流直接提供给LED（3）以输出低和高辐射通量水平的输出端子（11），作为编码光（L _{编码）被编码光接收器装置的光电传感器接收。 本发明还描述了一种对由LED（3）发射的光执行编码光调制的方法; 灯具; 和编码的光通信装置（5）。}