Frequency converted dimming signal generation
    11.
    发明授权
    Frequency converted dimming signal generation 有权
    变频调光信号产生

    公开(公告)号:US08040070B2

    公开(公告)日:2011-10-18

    申请号:US12328144

    申请日:2008-12-04

    CPC classification number: H05B33/0845 H05B33/0815 H05B39/044

    Abstract: There is provided a lighting control circuit comprising a duty cycle detection circuit, an averaging circuit, a waveform generator and a comparator circuit. The duty cycle detection circuit generates a first periodic waveform having a duty cycle and frequency corresponding to an input waveform duty cycle and frequency. The averaging circuit generates a first signal having a voltage level corresponding to the duty cycle of the first periodic waveform. The waveform generator outputs a second periodic waveform having a frequency different from the input waveform frequency. The comparator circuit compares the second periodic waveform with the first signal to generate an output waveform having a duty cycle corresponding to the input waveform duty cycle and a frequency corresponding to the frequency of the second periodic waveform. Also, there are provided methods.

    Abstract translation: 提供了包括占空比检测电路,平均电路,波形发生器和比较器电路的点亮控制电路。 占空比检测电路产生具有对应于输入波形占空比和频率的占空比和频率的第一周期性波形。 平均电路产生具有与第一周期波形的占空比对应的电压电平的第一信号。 波形发生器输出具有与输入波形频率不同的频率的第二周期波形。 比较器电路将第二周期波形与第一信号进行比较,以产生具有对应于输入波形占空比的占空比的输出波形和与第二周期波形的频率对应的频率。 此外,还提供了方法。

    Frequency converted dimming signal generation
    12.
    发明授权
    Frequency converted dimming signal generation 有权
    变频调光信号产生

    公开(公告)号:US08421372B2

    公开(公告)日:2013-04-16

    申请号:US13183011

    申请日:2011-07-14

    CPC classification number: H05B33/0845 H05B33/0815 H05B39/044

    Abstract: There is provided a lighting control circuit comprising a duty cycle detection circuit, an averaging circuit, a waveform generator and a comparator circuit. The duty cycle detection circuit generates a first periodic waveform having a duty cycle and frequency corresponding to an input waveform duty cycle and frequency. The averaging circuit generates a first signal having a voltage level corresponding to the duty cycle of the first periodic waveform. The waveform generator outputs a second periodic waveform having a frequency different from the input waveform frequency. The comparator circuit compares the second periodic waveform with the first signal to generate an output waveform having a duty cycle corresponding to the input waveform duty cycle and a frequency corresponding to the frequency of the second periodic waveform. Also, there are provided methods.

    Abstract translation: 提供了包括占空比检测电路,平均电路,波形发生器和比较器电路的点亮控制电路。 占空比检测电路产生具有对应于输入波形占空比和频率的占空比和频率的第一周期性波形。 平均电路产生具有与第一周期波形的占空比对应的电压电平的第一信号。 波形发生器输出具有与输入波形频率不同的频率的第二周期波形。 比较器电路将第二周期波形与第一信号进行比较,以产生具有对应于输入波形占空比的占空比的输出波形和与第二周期波形的频率对应的频率。 此外,还提供了方法。

    AC DRIVEN SOLID STATE LIGHTING APPARATUS WITH LED STRING INCLUDING SWITCHED SEGMENTS
    13.
    发明申请
    AC DRIVEN SOLID STATE LIGHTING APPARATUS WITH LED STRING INCLUDING SWITCHED SEGMENTS 有权
    交流驱动固态照明装置,LED灯包括开关部分

    公开(公告)号:US20110273102A1

    公开(公告)日:2011-11-10

    申请号:US12775842

    申请日:2010-05-07

    Abstract: A diode selection circuit for a light emitting apparatus according to some embodiments includes a plurality of light emitting devices coupled in series. The diode selection circuit includes a comparator configured to receive a rectified AC input signal and a reference voltage and to generate a control signal in response to comparison of the rectified AC input signal with the reference voltage, a voltage controlled current source configured to supply a current to the plurality of light emitting diodes that is proportional to the rectified AC input signal, and a switch configured to receive the control signal and to shunt current away from at least one of the plurality of light emitting devices in response to the control signal.

    Abstract translation: 根据一些实施例的用于发光装置的二极管选择电路包括串联耦合的多个发光器件。 二极管选择电路包括:比较器,被配置为接收整流的AC输入信号和参考电压,并响应于整流的AC输入信号与参考电压的比较而产生控制信号;电压控制电流源,被配置为提供电流 耦合到与经整流的AC输入信号成比例的多个发光二极管,以及被配置为接收控制信号并且响应于控制信号使电流远离多个发光器件中的至少一个分流的开关。

    FREQUENCY CONVERTED DIMMING SIGNAL GENERATION
    14.
    发明申请
    FREQUENCY CONVERTED DIMMING SIGNAL GENERATION 有权
    频率转换调制信号生成

    公开(公告)号:US20090184666A1

    公开(公告)日:2009-07-23

    申请号:US12328144

    申请日:2008-12-04

    CPC classification number: H05B33/0845 H05B33/0815 H05B39/044

    Abstract: There is provided a lighting control circuit comprising a duty cycle detection circuit, an averaging circuit, a waveform generator and a comparator circuit. The duty cycle detection circuit generates a first periodic waveform having a duty cycle and frequency corresponding to an input waveform duty cycle and frequency. The averaging circuit generates a first signal having a voltage level corresponding to the duty cycle of the first periodic waveform. The waveform generator outputs a second periodic waveform having a frequency different from the input waveform frequency. The comparator circuit compares the second periodic waveform with the first signal to generate an output waveform having a duty cycle corresponding to the input waveform duty cycle and a frequency corresponding to the frequency of the second periodic waveform. Also, there are provided methods.

    Abstract translation: 提供了包括占空比检测电路,平均电路,波形发生器和比较器电路的点亮控制电路。 占空比检测电路产生具有对应于输入波形占空比和频率的占空比和频率的第一周期性波形。 平均电路产生具有与第一周期波形的占空比对应的电压电平的第一信号。 波形发生器输出具有与输入波形频率不同的频率的第二周期波形。 比较器电路将第二周期波形与第一信号进行比较,以产生具有对应于输入波形占空比的占空比的输出波形和与第二周期波形的频率对应的频率。 此外,还提供了方法。

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