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    • 2. 发明申请
    • A METHOD AND APPARATUS FOR GAMMA CORRECTION OF DISPLAY DRIVE SIGNALS
    • 显示驱动信号伽马校正的方法和装置
    • WO2008093274A2
    • 2008-08-07
    • PCT/IB2008/050293
    • 2008-01-28
    • NXP B.V.MANCUSO, RobertoRIEDEL, Friedbert
    • MANCUSO, RobertoRIEDEL, Friedbert
    • G09G3/20
    • 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设备使用第一梯形电阻器布置(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)的输出端对多路复用器装置(36)进行编程来选择第二组电压(x)。 使用第二梯形电阻器装置(32)来提供处于第二组(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。 这种安排使得需要编程的数据量能够减少到实现伽马函数之间所需差异所需的最小数量。 第二组中的电压不需要均匀分布,并且可以提供伽马曲线形状的更多可变性,以在需要时最好地反映出可能被显示的显示器的不同特性。
    • 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
    • WO2008070381A2
    • 2008-06-12
    • PCT/US2007/083715
    • 2007-11-06
    • NXP B.V.RIEDEL, FriedbertGENNA, Giovanni
    • RIEDEL, FriedbertGENNA, Giovanni
    • 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. 发明申请
    • ARRANGEMENT AND METHOD FOR PROVIDING POWER TO A CIRCUIT USING SWITCHED CAPACITOR TECHNIQUES
    • 使用开关电容技术为电路提供电源的装置和方法
    • WO2008070381A3
    • 2008-08-07
    • PCT/US2007083715
    • 2007-11-06
    • NXP BVRIEDEL FRIEDBERTGENNA GIOVANNI
    • RIEDEL FRIEDBERTGENNA GIOVANNI
    • H02J1/10
    • 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。 根据本发明的示例实施例,一种装置通过在第一电源和第二电源之间进行选择来向电路提供电力。 该装置包括第一电路和第二电路,第一电路使用第一电源对第一电容元件进行充电,并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获得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电源中的一个。
    • 10. 发明申请
    • A METHOD AND APPARATUS FOR GAMMA CORRECTION OF DISPLAY DRIVE SIGNALS
    • 用于显示驱动信号的伽马校正的方法和装置
    • WO2008093274A3
    • 2008-09-25
    • PCT/IB2008050293
    • 2008-01-28
    • NXP BVMANCUSO ROBERTORIEDEL FRIEDBERT
    • MANCUSO ROBERTORIEDEL FRIEDBERT
    • G09G3/20
    • 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形状的更多变化,其中需要最佳地反映可驱动的可能显示器的不同特性。