公开(公告)号：WO2017133944A1

公开(公告)日：2017-08-10

申请号：PCT/EP2017/051533

申请日：2017-01-25

Applicant: PHILIPS LIGHTING HOLDING B.V.

Inventor： LIU, Junhu ,  SHI, Liang ,  FU, Jie ,  SUN, Xiao

IPC: H04B10/116

CPC classification number: H04B10/116

Abstract: A coded light transmission and reception circuit and transmission and reception method use signals to indicate the start and end of a coded light transmission window. Data is modulated onto the current waveform during the transmission window. Each data peak value during said transmission window exceeds an average current in the transmission window (which is used as the decision level) and each valley value during said transmission window is below the average current. In this way, a coded light output can be generated in which the overall decision current varies significantly, but the coded light signal can still be decoded reliably. The average level can be calculated in the receiver and used for demodulating.

Abstract translation: 编码光发送和接收电路以及发送和接收方法使用信号来指示编码光发送窗口的开始和结束。 数据在传输窗口期间被调制到当前波形上。 在所述传输窗口期间的每个数据峰值超过传输窗口中的平均电流（其用作判决电平），并且在所述传输窗口期间的每个谷值低于平均电流。 以这种方式，可以产生编码的光输出，其中整体判定电流显着变化，但编码的光信号仍然可以可靠地解码。 平均水平可以在接收器中计算出来并用于解调。

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）。}

公开(公告)号：WO2016193101A1

公开(公告)日：2016-12-08

申请号：PCT/EP2016/061815

申请日：2016-05-25

Applicant: PHILIPS LIGHTING HOLDING B.V.

Inventor： LIU, Junhu ,  ZHANG, Xianhui ,  YANG, Chun

IPC: H05B33/08 ,  H02M3/335

CPC classification number: H05B33/0815 ,  H02M3/33523 ,  H02M2001/0006 ,  H02M2001/0032 ,  Y02B20/347 ,  Y02B70/16

Abstract: An LED driver uses a switch mode power supply either to provide a regulated LED current (in a first mode) that connects directly to the LED arrangement or a regulated LED voltage (in a second mode) to an LED output terminal. An auxiliary power supply is either based on an auxiliary secondary side (i.e. an auxiliary secondary side winding) when in the first mode, or it is based on the regulated LED voltage when in the second mode. The LED driver further comprises an input adapted to receive a standby command for the driver, wherein the main controlling unit is adapted to control the driver in the second mode when receiving the standby command for the driver. In this way, the driver has a single shared stage which can operated in a regulated current (i.e. constant current) mode to drive the LED arrangement directly or a regulated voltage (i.e. constant voltage) mode. It can adaptively change between modes to improve the standby power efficiency. When the load is turned on (e.g. a first mode), the driver may function in constant current mode, and when the load is turned off (e.g. a second, standby mode), the driver works in constant voltage mode with the output voltage stepped down so that not sufficient to turn on the LED arrangement to be driven by the driver but enough to provide auxiliary power via the auxiliary power supply, in order to improve the auxiliary power efficiency.

Abstract translation: LED驱动器使用开关模式电源来提供直接连接到LED装置的调节LED电流（第一模式）或者将调节的LED电压（第二模式）连接到LED输出端子。 当处于第一模式时，辅助电源或者基于辅助次级侧（即辅助次级侧绕组），或者当处于第二模式时基于调节的LED电压。 所述LED驱动器还包括适于接收所述驾驶员的备用命令的输入，其中所述主控制单元适于在接收到所述驾驶员的待命命令时控制所述驾驶员处于所述第二模式。 以这种方式，驱动器具有可以以调节电流（即恒定电流）模式操作的单个共享级，以直接驱动LED布置或调节电压（即恒定电压）模式。 它可以在模式之间自适应地改变，以提高待机功率效率。 当负载开启（例如第一模式）时，驱动器可以在恒流模式下工作，当负载关闭时（例如第二个待机模式），驱动器工作在恒压模式，输出电压阶跃 以使得不足以将驱动器驱动的LED布置接通，但足以通过辅助电源提供辅助电力，以便提高辅助电力效率。

公开(公告)号：WO2016131719A1

公开(公告)日：2016-08-25

申请号：PCT/EP2016/053015

申请日：2016-02-12

Applicant: PHILIPS LIGHTING HOLDING B.V.

Inventor： LIU, Junhu ,  OP HET VELD, Johannes, Hubertus, Gerardus ,  WANG, Binghong ,  HATTRUP, Christian

IPC: G06G7/161 ,  G06G7/163 ,  H05B33/08

CPC classification number: H05B33/0815 ,  G06G7/161 ,  G06G7/163 ,  H05B33/0851 ,  Y02B20/346

Abstract: A level control circuit uses a reference voltage generated from a mains voltage signal by a reference circuit to provide a feedforward control signal. This control signal is used to generate a control signal for controlling a switched mode power converter. The reference circuit comprises a combining circuit adapted to apply a pulse width modulation control signal indicative of said level such that said reference voltage contains the level information. In an embodiment, the reference circuit comprises a voltage divider comprising a resistor circuit and the combining circuit comprises an adjustment module to which a pulse width modulation control signal is applied thereby to change the effective voltage divider ratio to implement level control. The level control further comprises a buffering capacitor or a buffered low pass filter coupled to the output (SET) of the voltage divider. This provides a power factor correction approach for active level control, and which can be implemented very simply and with low cost. It can be used for controlling lighting dimming.

Abstract translation: 电平控制电路使用由参考电路从电源电压信号产生的参考电压来提供前馈控制信号。 该控制信号用于产生用于控制开关模式功率转换器的控制信号。 参考电路包括组合电路，其适于施加指示所述电平的脉宽调制控制信号，使得所述参考电压包含电平信息。 在一个实施例中，参考电路包括一个分压器，该分压器包括一个电阻电路，该组合电路包括一个调整模块，脉宽调制控制信号被施加到该调整模块，从而改变有效分压比以实现电平控制。 电平控制还包括耦合到分压器的输出（SET）的缓冲电容器或缓冲低通滤波器。 这提供了用于主动电平控制的功率因数校正方法，其可以非常简单且成本低廉地实现。 可用于控制照明调光。

公开(公告)号：WO2017005573A1

公开(公告)日：2017-01-12

申请号：PCT/EP2016/065128

申请日：2016-06-29

Applicant: PHILIPS LIGHTING HOLDING B.V.

Inventor： ZHANG, Xianhui ,  LI, Ken, K ,  CHEN, Zhi, Quan ,  LIU, Junhu ,  LONG, Huojun ,  LI, Ace

IPC: H02M3/156 ,  H05B33/08 ,  H02M1/42

CPC classification number: H02M3/1563 ,  H02M1/4225 ,  H02M3/156 ,  H05B33/0815 ,  Y02B20/347 ,  Y02B20/348 ,  Y02B70/126

Abstract: The invention provides a power converter comprising: an input for receiving input power with a variable nominal mains level, wherein said variable nominal mains level falls within at least 90V to 240V; a main power switch (Q1) driven by the input power, and a control circuit (Q2, Q3) for controlling a control current of the main power switch (Q1), wherein the control circuit (Q2, Q3) is adapted to sense the level of the input power and draw current from a control terminal of the power switch (Q1) according to the level, and said control circuit is adapted to operate in linear region and increase the drawn current along with the increase of the level throughout the variable nominal mains level of the input power, wherein the control circuit comprises: a Darlington bridge with a first transistor (Q2) and a second transistor (Q3), the first transistor (Q2) with a base terminal connected to a circuit position indicative of the voltage amplitude of the input power, the second transistor (Q3) with a base terminal connected to an emitter terminal of the first transistor (Q2) and a collector terminal connected to the control terminal of the main power switch (Q1) and a collector terminal of the first transistor (Q2); and a resistor network (R3, R7) coupled to the emitter of the second transistor (Q3) for regulating the amplification of the second transistor (Q3) and keep the second transistor (Q3) working at linear region throughout the variable nominal mains level of the input power.

Abstract translation: 本发明提供了一种功率转换器，包括：输入端，用于接收具有可变额定电源电平的输入功率，其中所述可变标称电源电平落入至少90V至240V; 由所述输入电源驱动的主电源开关（Q1）和用于控制所述主电源开关（Q1）的控制电流的控制电路（Q2，Q3），其中，所述控制电路（Q2，Q3） 输入功率的电平和根据电平从电源开关（Q1）的控制端引出电流，并且所述控制电路适于在线性区域中操作并且随着整个变量的电平的增加而增加所绘制的电流 其中所述控制电路包括：具有第一晶体管（Q2）和第二晶体管（Q3）的达林顿电桥，所述第一晶体管（Q2）的基极端子连接到指示所述第一晶体管 输入功率的电压幅度，第二晶体管（Q3），其基极端子连接到第一晶体管（Q2）的发射极端子，以及集电极端子连接到主电源开关（Q1）的控制端子和集电极端子 的 第一晶体管（Q2）; 以及耦合到第二晶体管（Q3）的发射极的电阻器网络（R3，R7），用于调节第二晶体管（Q3）的放大并且保持第二晶体管（Q3）在整个可变额定电源电平 输入功率。

公开(公告)号：WO2016023845A1

公开(公告)日：2016-02-18

申请号：PCT/EP2015/068321

申请日：2015-08-10

Applicant: PHILIPS LIGHTING HOLDING B.V.

Inventor： LIU, Junhu ,  SUN, Xiao ,  WANG, Shan ,  HU, Xinghua

IPC: H05B37/02

CPC classification number: H05B33/0842 ,  H05B33/0815 ,  H05B37/0245 ,  H05B37/0281

Abstract: 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.

Abstract translation: 驱动器能够驱动模拟接口模块或数字接口模块，例如LED模块。 一组输出引脚用于连接模块，同一组输出引脚用于模拟接口LED模块和数字接口LED模块。 检测电路基于控制引脚上的信号来检测模块是模拟模块还是数字模块。 然后，使用模拟驱动信号或使用数字通信接口对LED模块参数集合相应地设置驱动器的配置。 所述驱动器还包括用于将电源电压（V）切换到所述电源引脚（VCC）的第一开关电路（20）和用于通过以下步骤将电源电压（V）耦合到所述控制引脚的第二开关电路（30） 电阻器（R6），其中所述检测电路（16）被配置为当所述第一开关电路（20）将电源电压（V）提供给所述电源引脚并且所述第二开关电路（30）隔离时，确定所述模块是数字的 来自控制引脚的电源电压（V）。