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    • 2. 发明授权
    • Monitoring the temperature dependence of the external capacitors of a charge pump and improved charge pumps based thereon
    • 监测电荷泵的外部电容器的温度依赖性和改进的电荷泵
    • US07859321B2
    • 2010-12-28
    • US11813284
    • 2005-12-22
    • Friedbert Riedel
    • Friedbert Riedel
    • G05F1/10
    • H02M3/073H02M1/32
    • Apparatus (40) comprising a multistage charge pump (10) having an output (41) for connecting a load (Cout, KL). The charge pump (10) comprises m gain stages for charging and discharging m external stage capacitors (C) in order to provide an output voltage (Vout) at the output (41) that is about m times higher than a supply voltage (Vdd) of the charge pump (10). The charging and discharging is influenced by switches inside said charge pump (10) that are controlled by a switching signal having a switching frequency (fosc). A monitoring circuit (20) is provided that monitors temperature-induced changes of the value of an external reference capacitor (Cref). Furthermore, means (30) for adjusting the switching frequency (fosc) are employed in order to compensate variations of the gain of said charge pump (10) that are caused by the changes of the value of the m external stage capacitors (C).
    • 装置(40)包括具有用于连接负载(Cout,KL))的输出端(41)的多级电荷泵(10)。 电荷泵(10)包括用于对m个外部级电容器(C)进行充电和放电的m个增益级,以便在输出端(41)处提供比电源电压(Vdd)高大约m倍的输出电压(Vout) 的电荷泵(10)。 充电和放电受到由具有开关频率(fosc)的开关信号控制的所述电荷泵(10)内的开关的影响。 提供监控电路(20),其监测温度引起的外部参考电容器(Cref)的值的变化。 此外,为了补偿由m个外部级电容器(C)的值的变化引起的所述电荷泵(10)的增益的变化,采用用于调整开关频率(fosc)的装置(30)。
    • 3. 发明授权
    • Voltage doubler circuit
    • 电压倍增电路
    • US07113021B2
    • 2006-09-26
    • US10525861
    • 2003-08-21
    • Friedbert RiedelChristopher Rodd Speirs
    • Friedbert RiedelChristopher Rodd Speirs
    • G05F1/10
    • H02M3/07
    • The invention relates to a voltage processing unit comprising an integrated charge pump 11 for multiplying a voltage Vx applied to an input of the integrated charge pump 11 by a predetermined factor Xm. In order to enable a multiplication of an available voltage by a desired factor with a reduced required area for the integrated charge pump, it is proposed that the voltage processing unit further comprises an external voltage doubling circuit 12 for amplifying an available voltage Vdd and for applying the amplified voltage Vx to the input of the integrated charge pump 11. The invention relates equally to a corresponding method.
    • 本发明涉及一种电压处理单元,其包括用于将施加到积分电荷泵11的输入的电压Vx乘以预定因子Xm的集成电荷泵11。 为了使可用电压乘以期望因子与集成电荷泵的所需面积减小,建议电压处理单元还包括用于放大可用电压Vdd并用于施加的外部电压倍增电路12 放大电压Vx到集成电荷泵11的输入。本发明同样涉及相应的方法。
    • 4. 发明申请
    • METHOD AND APPARATUS FOR GAMMA CORRECTION OF DISPLAY SIGNALS
    • 用于显示信号的伽马校正的方法和装置
    • US20100066766A1
    • 2010-03-18
    • US12524685
    • 2008-01-28
    • Roberto MancusoFriedbert Riedel
    • Roberto MancusoFriedbert Riedel
    • G09G5/10H02J1/00
    • G09G3/20G09G3/3611G09G2320/0276G09G2320/041Y10T307/461Y10T307/469
    • A method and apparatus for generating gamma corrected analogue voltages uses a first ladder resistor arrangement (34) to provides a first set of analogue voltage levels. A second set of voltages (x) is selected by programming a multiplexer arrangement (36) at the output of the first ladder resistor arrangement (34). A second ladder resistor arrangement (32) is used to provide a third set of analogue voltage levels which are at intermediate voltage levels between voltage levels of the second set (x). The output (g) is the buffered voltages of the second and third sets. This arrangement enables the amount of data that needs to be programmed to be reduced to a minimum required to implement the desired differences between the gamma functions. The voltages in the second set do not need to be evenly spaced, and more variability in the shape of the gamma curve can be provided where it is needed to best reflect different characteristics of possible displays to be driven.
    • 用于产生伽马校正的模拟电压的方法和装置使用第一梯形电阻器装置(34)来提供第一组模拟电压电平。 通过在第一梯形电阻器装置(34)的输出处编程多路复用器装置(36)来选择第二组电压(x)。 第二梯形电阻器组件(32)用于提供处于第二组(x)的电压电平之间的中间电压电平的第三组模拟电压电平。 输出(g)是第二和第三组的缓冲电压。 这种布置使得需要编程的数据量减少到在伽马功能之间实现期望差异所需的最小值。 第二组中的电压不需要均匀间隔,并且可以提供伽马曲线的形状的更多变化,其中需要最佳地反映待驱动的可能显示器的不同特性。
    • 7. 发明申请
    • ARRANGEMENT AND METHOD FOR PROVIDING POWER TO A CIRCUIT USING SWITCHED CAPACITOR TECHNIQUES
    • 使用开关电容器技术向电路提供电源的布置和方法
    • US20090322153A1
    • 2009-12-31
    • US12513690
    • 2007-11-06
    • Friedbert RiedelGiovanni Genna
    • Friedbert RiedelGiovanni Genna
    • H02J1/00H02J9/00
    • H02J1/10H02M3/07Y10T307/625Y10T307/696
    • Switching power supplies are implemented using a variety of methods and devices. According to an example embodiment of the present invention, an arrangement provides power to a circuit by selecting between a first supply and a second supply. The arrangement includes a first circuit that charges a first capacitive element using the first supply and generates a first reference voltage by distributing charge between the first capacitive element and a second capacitive element. The arrangement also includes a first comparator that compares the first reference voltage to a second reference voltage derived from the second supply and a second comparator that compares the first reference voltage to a third reference voltage. The arrangement further includes a power control circuit that selects one of the supplies based on the results of the comparisons.
    • 开关电源使用各种方法和设备来实现。 根据本发明的示例性实施例,一种布置通过在第一电源和第二电源之间进行选择来为电路提供电力。 该装置包括使用第一电源对第一电容元件充电的第一电路,并且通过在第一电容元件和第二电容元件之间分配电荷来产生第一参考电压。 该装置还包括将第一参考电压与从第二电源导出的第二参考电压进行比较的第一比较器和将第一参考电压与第三参考电压进行比较的第二比较器。 该装置还包括功率控制电路,其基于比较的结果来选择供电中的一个。
    • 9. 发明授权
    • Arrangement and method for providing power to a circuit using switched capacitor techniques
    • 使用开关电容器技术向电路提供电源的布置和方法
    • US07960864B2
    • 2011-06-14
    • US12513690
    • 2007-11-06
    • Friedbert RiedelGiovanni Genna
    • Friedbert RiedelGiovanni Genna
    • H02J1/00H02J3/00
    • H02J1/10H02M3/07Y10T307/625Y10T307/696
    • Switching power supplies are implemented using a variety of methods and devices. According to an example embodiment of the present invention, an arrangement provides power to a circuit by selecting between a first supply and a second supply. The arrangement includes a first circuit that charges a first capacitive element using the first supply and generates a first reference voltage by distributing charge between the first capacitive element and a second capacitive element. The arrangement also includes a first comparator that compares the first reference voltage to a second reference voltage derived from the second supply and a second comparator that compares the first reference voltage to a third reference voltage. The arrangement further includes a power control circuit that selects one of the supplies based on the results of the comparisons.
    • 开关电源使用各种方法和设备来实现。 根据本发明的示例性实施例,一种布置通过在第一电源和第二电源之间进行选择来为电路提供电力。 该装置包括使用第一电源对第一电容元件充电的第一电路,并且通过在第一电容元件和第二电容元件之间分配电荷来产生第一参考电压。 该装置还包括将第一参考电压与从第二电源导出的第二参考电压进行比较的第一比较器和将第一参考电压与第三参考电压进行比较的第二比较器。 该装置还包括功率控制电路,其基于比较的结果来选择供电中的一个。
    • 10. 发明申请
    • Monitoring the Temperature Dependence of the External Capacitors of a Charge Pump and Improved Charge Pumps Based Thereon
    • 监测电荷泵外部电容器的温度依赖性及其改进的电荷泵
    • US20080297231A1
    • 2008-12-04
    • US11813284
    • 2005-12-22
    • Friedbert Riedel
    • Friedbert Riedel
    • H02M3/07
    • H02M3/073H02M1/32
    • Apparatus (40) comprising a multistage charge pump (10) having an output (41) for connecting a load (Cout, KL). The charge pump (10) comprises m gain stages for charging and discharging m external stage capacitors (C) in order to provide an output voltage (Vout) at the output (41) that is about m times higher than a supply voltage (Vdd) of the charge pump (10). The charging and discharging is influenced by switches inside said charge pump (10) that are controlled by a switching signal having a switching frequency (fosc). A monitoring circuit (20) is provided that monitors temperature-induced changes of the value of an external reference capacitor (Cref). Furthermore, means (30) for adjusting the switching frequency (fosc) are employed in order to compensate variations of the gain of said charge pump (10) that are caused by the changes of the value of the m external stage capacitors (C).
    • 装置(40)包括具有用于连接负载(Cout,KL))的输出端(41)的多级电荷泵(10)。 电荷泵(10)包括用于对m个外部级电容器(C)进行充电和放电的m个增益级,以便在输出端(41)处提供比电源电压(Vdd)高大约m倍的输出电压(Vout) 的电荷泵(10)。 充电和放电受到由具有开关频率(fosc)的开关信号控制的所述电荷泵(10)内的开关的影响。 提供监控电路(20),其监测温度引起的外部参考电容器(Cref)的值的变化。 此外,为了补偿由m个外部级电容器(C)的值的变化引起的所述电荷泵(10)的增益的变化,采用用于调整开关频率(fosc)的装置(30)。