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    • 2. 发明授权
    • Driving circuit for light emitting elements
    • 发光元件的驱动电路
    • US08305011B2
    • 2012-11-06
    • US12667879
    • 2008-07-03
    • Atsushi KitagawaKunihiro Komiya
    • Atsushi KitagawaKunihiro Komiya
    • H05B37/02
    • H05B33/0866H05B33/0827
    • Multiple LED terminals are provided to multiple LEDs, respectively. Each of these LED terminals is connected to the anode of the corresponding LED. A booster circuit boosts an input voltage. Multiple constant current sources are provided to the multiple LEDs, respectively. One terminal of each of the constant current sources is connected to the corresponding one of the LEDs via the corresponding one of the LED terminals. Multiple switches are provided to the multiple constant current sources, respectively, each of which selectively outputs a voltage selected from the input voltage and the output voltage of the booster circuit to the corresponding constant current source. A control circuit monitors each of the voltages at the multiple LED terminals, and controls the connection state of each of the switches based upon the corresponding voltage.
    • 多个LED端子分别提供给多个LED。 这些LED端子中的每一个连接到相应LED的阳极。 升压电路提高输入电压。 多个恒流源分别提供给多个LED。 每个恒流源的一个端子经由相应的一个LED端子连接到相应的一个LED。 分别向多个恒定电流源提供多个开关,每个恒定电流源选择性地将从升压电路的输入电压和输出电压中选出的电压输出到相应的恒定电流源。 控制电路监视多个LED端子处的每个电压,并且基于相应的电压来控制每个开关的连接状态。
    • 5. 发明授权
    • Step-up power supply unit and portable apparatus utilizing the same
    • 升压电源单元和利用其的便携式设备
    • US07453711B2
    • 2008-11-18
    • US11084472
    • 2005-03-18
    • Osamu YanagidaKunihiro Komiya
    • Osamu YanagidaKunihiro Komiya
    • H02M3/18H02M7/00H02M7/19
    • H02M3/07
    • A step-up power supply unit for providing a multiplicity of different step-up voltages as needed, generated by stepping up a voltage of a single power source such as a battery. The step-up voltage of the last stage charge pump unit and the step-up voltage of at least one charge pump unit other than the last stage charge pump unit, are made available as multiple output voltages. When one or more of the output voltages are not needed, all the charge pump units subsequent to the one providing the highest output voltage are disabled based on an output voltage control signal, thereby minimizing the size and cost of the step-up circuit and reducing the power consumption by the circuit.
    • 升压电源单元,用于通过升高诸如电池的单个电源的电压来产生需要的多个不同的升压电压。 最后一级电荷泵单元的升压电压和除最后一级电荷泵单元之外的至少一个电荷泵单元的升压电压可用作多个输出电压。 当不需要一个或多个输出电压时,基于输出电压控制信号禁用提供最高输出电压的所有电荷泵单元,从而使升压电路的尺寸和成本最小化并且减小 电路的功耗。
    • 8. 发明申请
    • DRIVING CIRCUIT FOR LIGHT EMITTING ELEMENT, AND ELECTRONIC DEVICE
    • 用于发光元件和电子设备的驱动电路
    • US20100194294A1
    • 2010-08-05
    • US12667879
    • 2008-07-03
    • Atsushi KitagawaKunihiro Komiya
    • Atsushi KitagawaKunihiro Komiya
    • H05B37/02
    • H05B33/0866H05B33/0827
    • Multiple LED terminals are provided to multiple LEDs, respectively. Each of these LED terminals is connected to the anode of the corresponding LED. A booster circuit boosts an input voltage. Multiple constant current sources are provided to the multiple LEDs, respectively. One terminal of each of the constant current sources is connected to the corresponding one of the LEDs via the corresponding one of the LED terminals. Multiple switches are provided to the multiple constant current sources, respectively, each of which selectively outputs a voltage selected from the input voltage and the output voltage of the booster circuit to the corresponding constant current source. A control circuit monitors each of the voltages at the multiple LED terminals, and controls the connection state of each of the switches based upon the corresponding voltage.
    • 多个LED端子分别提供给多个LED。 这些LED端子中的每一个连接到相应LED的阳极。 升压电路提高输入电压。 多个恒流源分别提供给多个LED。 每个恒流源的一个端子经由相应的一个LED端子连接到相应的一个LED。 分别向多个恒定电流源提供多个开关,每个恒定电流源选择性地将从升压电路的输入电压和输出电压选择的电压输出到相应的恒定电流源。 控制电路监视多个LED端子处的每个电压,并且基于相应的电压来控制每个开关的连接状态。