-
公开(公告)号：US20100117543A1
公开(公告)日：2010-05-13
申请号：US12595646
申请日：2008-04-15
IPC分类号： H05B37/02
CPC分类号： H05B33/0872 , H05B33/0818
摘要： A lighting device (10) comprises a LED (4), a driver (3), and a controller (2) which regularly switches from a drive state to a measuring state and back. In the measuring state, the controller controls the driver such that the driver does not generate any LED current. The LED produces a measuring signal (Sm) indicating a measured light level. The controller processes the measuring signal received from the LED, and makes a decision on the desired light output of the LED. In the drive state, the controller controls the driver such that the average light output produced by the LED corresponds to the desired light output as determined in the measuring state. In a possible embodiment, the driver generates a nominal LED current INOM, and sets the duration (τ 1) of the drive state on the basis of the desired light output of the LED as determined in the measuring state.
摘要翻译： 照明装置（10）包括LED（4），驱动器（3）和控制器（2），其从驱动状态定期地切换到测量状态和返回。 在测量状态下，控制器控制驱动器，使得驱动器不产生任何LED电流。 LED产生指示测量的光电平的测量信号（Sm）。 控制器处理从LED接收到的测量信号，并决定LED的所需光输出。 在驱动状态下，控制器控制驱动器，使得由LED产生的平均光输出对应于在测量状态下确定的期望的光输出。 在可能的实施例中，驱动器产生标称LED电流INOM，并且基于在测量状态中确定的LED的期望光输出来设置驱动状态的持续时间（τ1）。
-
公开(公告)号：US08258707B2
公开(公告)日：2012-09-04
申请号：US12595646
申请日：2008-04-15
IPC分类号： H05B37/02
CPC分类号： H05B33/0872 , H05B33/0818
摘要： A lighting device (10) comprises a LED (4), a driver (3), and a controller (2) which regularly switches from a drive state to a measuring state and back. In the measuring state, the controller controls the driver such that the driver does not generate any LED current. The LED produces a measuring signal (Sm) indicating a measured light level. The controller processes the measuring signal received from the LED, and makes a decision on the desired light output of the LED. In the drive state, the controller controls the driver such that the average light output produced by the LED corresponds to the desired light output as determined in the measuring state. In a possible embodiment, the driver generates a nominal LED current INOM, and sets the duration (τ1) of the drive state on the basis of the desired light output of the LED as determined in the measuring state.
摘要翻译： 照明装置（10）包括LED（4），驱动器（3）和控制器（2），其从驱动状态定期地切换到测量状态和返回。 在测量状态下，控制器控制驱动器，使得驱动器不产生任何LED电流。 LED产生指示测量的光电平的测量信号（Sm）。 控制器处理从LED接收到的测量信号，并决定LED的所需光输出。 在驱动状态下，控制器控制驱动器，使得由LED产生的平均光输出对应于在测量状态下确定的期望的光输出。 在可能的实施例中，驱动器产生标称LED电流INOM，并且基于在测量状态中确定的LED的期望光输出来设置驱动状态的持续时间（τ1）。
-
3.发明申请DIMMING REGULATOR INCLUDING PROGRAMMABLE HYSTERETIC DOWN-CONVERTER FOR INCREASING DIMMING RESOLUTION OF SOLID STATE LIGHTING LOADS 审中-公开调节器包括可编程滞后转换器，用于增加固态照明负载的调光分辨率公开(公告)号：US20130038234A1
公开(公告)日：2013-02-14
申请号：US13642017
申请日：2011-04-22
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , G09G3/3406 , H05B33/083
摘要： A system providing deep dimming of a solid state lighting (SSL) load includes a hysteretic down-converter, a shunt switch, a controller and a comparator. The down-converter controls average current value and amplitude of ripple of SSL current using amplitude modulation (AM) dimming control. The shunt switch controls magnitude of the SSL current using pulse width modulation (PWM) dimming control. The controller generates first and second PWM signals for controlling upper and lower current levels at which the down-converter operates based on the SSL current and voltage across the SSL load, and generates a third PWM signal for controlling the shunt switch based on a dimming level load set by a dimmer. The comparator circuit compares first and second analog signals corresponding to the first and second PWM signals with the SSL current, and drives the down-converter in response to the comparison. The SSL current is based on both the AM dimming control and the PWM dimming control.
摘要翻译： 提供固态照明（SSL）负载的深度调光的系统包括滞后下变频器，分流开关，控制器和比较器。 下变频器使用调幅（AM）调光控制来控制SSL电流的平均电流值和纹波幅度。 分流开关使用脉冲宽度调制（PWM）调光控制来控制SSL电流的大小。 控制器产生第一和第二PWM信号，用于根据SSL负载上的SSL电流和电压控制下转换器工作的上限和下限电流水平，并产生第三个PWM信号，用于根据调光级别控制分流开关 负载由调光器设定。 比较器电路将与第一和第二PWM信号相对应的第一和第二模拟信号与SSL电流进行比较，并响应于比较驱动下变频器。 SSL电流基于AM调光控制和PWM调光控制。
-
4.发明申请公开(公告)号：US20080278091A1
公开(公告)日：2008-11-13
申请号：US11570932
申请日：2005-06-29
IPC分类号： H05B41/16
CPC分类号： H05B41/2824 , H05B41/3927
摘要： A back light emitter (4) of a display apparatus is supplied with alternating current (AC) bursts. An emitted light representing signal is generated from the AC bursts as supplied to the light emitter (4). The emitted light representing signal is compared with a reference signal REF to provide an error signal. A duration of the AC bursts is adjusted dependent on the error signal, such as to minimize the error signal.
摘要翻译： 显示装置的背光发射器（4）被提供有交流（AC）脉冲串。 从提供给光发射器（4）的AC脉冲串产生发出的表示信号的光。 将发出的光表示信号与参考信号REF进行比较以提供误差信号。 根据误差信号调整AC脉冲串的持续时间，例如使误差信号最小化。
-
公开(公告)号：US06717370B2
公开(公告)日：2004-04-06
申请号：US10225796
申请日：2002-08-22
IPC分类号： H05B3700
CPC分类号： H05B41/2851 , Y02B20/186
摘要： In an electronic ballast equipped with a high-frequency bridge circuit, a microprocessor for controlling lamp operation and a stop circuit for interrupting the operation of the ballast in case of a fault condition, the stop circuit interrupts both the operation of the bridge circuit and the operation of the microprocessor. Unstable operation of the ballast caused by the fault condition is prevented thereby.
摘要翻译： 在配备有高频桥接电路的电子镇流器中，用于控制灯操作的微处理器和用于在故障状态下中断镇流器的操作的停止电路，停止电路中断桥电路和 操作微处理器。 由此防止由故障状况引起的镇流器的不稳定的操作。
-
公开(公告)号：US08754587B2
公开(公告)日：2014-06-17
申请号：US13381980
申请日：2010-06-29
CPC分类号： H02M3/335 , H02M1/4225 , H02M2001/007 , H05B33/0815 , Y02B70/126 , Y10T307/25
摘要： A power supply circuit has an LLC converter stage for converting a DC voltage input into a DC voltage output, and at least one hysteretic converter stage. Each hysteretic converter stage has a DC voltage input coupled to the DC voltage output of the LLC converter stage, and a DC current output. The LLC converter stage lacks a feedback control, and is operated at its load independent point. A ripple on the DC voltage output of the LLC converter does not affect the output current of the hysteretic converter stage. The stable DC current output of the hysteretic converter stage is coupled to a load having one or more LED strings.
摘要翻译： 电源电路具有用于将DC电压输入转换为DC电压输出的LLC转换器级和至少一个迟滞转换级。 每个迟滞转换器级具有耦合到LLC转换器级的DC电压输出的直流电压输入和直流电流输出。 LLC转换器级缺乏反馈控制，并且在其负载独立点运行。 LLC转换器的直流电压输出上的纹波不影响滞后转换器级的输出电流。 迟滞转换器级的稳定DC电流输出耦合到具有一个或多个LED串的负载。
-
公开(公告)号：US07652437B2
公开(公告)日：2010-01-26
申请号：US11570899
申请日：2005-06-23
IPC分类号： H05B41/36
CPC分类号： H05B41/295 , Y10S315/05
摘要： A drive circuit for driving a fluorescent tube lamp comprises a variable frequency oscillator generating a lamp drive frequency, a resonant drive circuit driving the lamp with the lamp drive frequency, and a control unit for driving the variable frequency of the latter under control of a synchronization signal. When a pre-heating frequency is generated by the variable frequency oscillator, the lamp is pre-heated while when an illumination drive frequency is generated, the lamp ignites and operates in its illuminated state. The control unit comprises a transition controller for at an ignition of the lamp limiting the drive frequency to an ultimate ignition frequency, and only enabling transition from the ultimate ignition frequency to the illumination drive frequency after an ignition delay time.
摘要翻译： 用于驱动荧光管灯的驱动电路包括产生灯驱动频率的可变频率振荡器，用灯驱动频率驱动灯的谐振驱动电路，以及用于在同步控制下驱动后者的可变频率的控制单元 信号。 当由可变频率振荡器产生预热频率时，灯被预热，而当产生照明驱动频率时，灯点亮并在其照亮状态下工作。 控制单元包括一个过渡控制器，用于点灯时将驱动频率限制在极限点火频率，并且仅在点火延迟时间之后能够从最终点火频率转换到照明驱动频率。
-
公开(公告)号：US20080303454A1
公开(公告)日：2008-12-11
申请号：US11570899
申请日：2005-06-23
IPC分类号： H05B41/36
CPC分类号： H05B41/295 , Y10S315/05
摘要： A drive circuit for driving a fluorescent tube lamp comprises a variable frequency oscillator generating a lamp drive frequency, a resonant drive circuit driving the lamp with the lamp drive frequency, and a control unit for driving the variable frequency of the latter under control of a synchronization signal. When a pre-heating frequency is generated by the variable frequency oscillator, the lamp is pre-heated while when an illumination drive frequency is generated, the lamp ignites and operates in its illuminated state. The control unit comprises a transition controller for at an ignition of the lamp limiting the drive frequency to an ultimate ignition frequency, and only enabling transition from the ultimate ignition frequency to the illumination drive frequency after an ignition delay time.
摘要翻译： 用于驱动荧光管灯的驱动电路包括产生灯驱动频率的可变频率振荡器，用灯驱动频率驱动灯的谐振驱动电路，以及用于在同步控制下驱动后者的可变频率的控制单元 信号。 当由可变频率振荡器产生预热频率时，灯被预热，而当产生照明驱动频率时，灯点亮并在其照亮状态下工作。 控制单元包括一个过渡控制器，用于点灯时将驱动频率限制在极限点火频率，并且仅在点火延迟时间之后能够从最终点火频率转换到照明驱动频率。
-
9.发明授权Light source luminaire system light element control by symbol tag interpreter 有权光源灯具系统灯元件由符号标签解释器控制公开(公告)号：US08442691B2
公开(公告)日：2013-05-14
申请号：US12811835
申请日：2009-01-13
CPC分类号： H05B37/0254
摘要： Light source having a plurality of light elements (207) and a control system for controlling the light elements. The control system comprises a plurality of light element controllers (213), each connected to a respective light element (207), and arranged to obtain light element data; and a bus interface (203), which is connected to the light element controllers (213) via a light source bus (209). The bus interface (203) provides the light element controllers (213) with a general command, and the light element controllers generate light element drive signals on basis of the general command and the light element data.
摘要翻译： 光源具有多个光元件（207）和用于控制光元件的控制系统。 控制系统包括多个光元件控制器（213），每个光元件控制器连接到相应的光元件（207），并被布置成获得光元件数据; 以及经由光源总线（209）连接到所述光元件控制器（213）的总线接口（203）。 总线接口（203）为光元件控制器（213）提供通用命令，并且光元件控制器基于通用命令和光元件数据产生光元件驱动信号。
-
公开(公告)号：US08427079B2
公开(公告)日：2013-04-23
申请号：US13060703
申请日：2009-08-28
IPC分类号： H05B37/02
CPC分类号： H05B33/0869 , H05B33/0818
摘要： A lighting device (1) comprises a plurality of LEDs (11-14) producing light (21-24) of mutually different colors. The LEDs are driven in switching cycles (63) with a duty cycle controlled supply current of constant magnitude. In each switching cycle, each LED is first switched ON (61) and then switched OFF (62).In a measuring mode, during one switching cycle (63B), all ON phases of all LEDs are briefly interrupted, except for one LED (11), so that a light sensor (70) measures the light from this one LED. This measurement can be used to adapt the duty cycle of this one LED. In the next switching cycle (63C), the interruption of the ON phases is compensated by extending the ON phases of all LEDs except said one LED, the extension having a duration equal to the duration (τD) of the interruption.
摘要翻译： 照明装置（1）包括产生彼此不同颜色的光（21-24）的多个LED（11-14）。 在具有恒定幅度的占空比控制的供电电流的开关周期（63）中驱动LED。 在每个开关周期中，每个LED首先接通（61），然后关闭（62）。 在测量模式下，在一个开关周期（63B）期间，除了一个LED（11）之外，所有LED的所有ON相都被短暂地中断，使得光传感器（70）测量来自该一个LED的光。 该测量可用于调整该一个LED的占空比。 在下一个开关周期（63C）中，通过扩展除了所述一个LED之外的所有LED的ON相位来补偿ON相位的中断，该延时具有等于中断持续时间（τD）的持续时间。
-
-
-
-
-
-
-
-
-
搜索结果
24 条记录 (耗时 0.021 秒)
