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    • 2. 发明专利
    • Output buffer, and source driver using the same
    • 输出缓冲器和使用相同的源驱动器
    • JP2010171947A
    • 2010-08-05
    • JP2009279292
    • 2009-12-09
    • Novatek Microelectronics Corpノバテック マイクロエレクトロニクス コープ.Novatek Microelectronics Corp.
    • HUANG LI-CHUN
    • H03F1/02G02F1/133G09G3/20G09G3/36
    • G09G3/3688G09G2310/027
    • PROBLEM TO BE SOLVED: To provide an output buffer selectively adjusting an operation power loss. SOLUTION: The output buffer for providing an output voltage signal includes an operational amplifier, a controller and a power circuit. The operational amplifier provides the output voltage signal according to an input voltage signal. The controller determines whether a reference signal corresponding to the input voltage signal satisfies an energy-saving condition, and triggers an energy-saving operation event if yes, or triggers a normal operation event if not. The power circuit provides an energy-saving power signal to drive the operational amplifier in response to the energy-saving operation event and provides a normal power signal to drive the operational amplifier in response to the normal operation event, such that the operational amplifier provides the output voltage signal according to the input voltage signal. A voltage level of the normal power signal is higher than a voltage level of the energy-saving power signal. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供选择性地调节操作功率损耗的输出缓冲器。 解决方案:用于提供输出电压信号的输出缓冲器包括运算放大器,控制器和电源电路。 运算放大器根据输入电压信号提供输出电压信号。 控制器确定与输入电压信号相对应的参考信号是否满足节能条件,如果是,则触发节能运行事件,否则触发正常运行事件。 电源电路提供节能功率信号以响应于节能操作事件来驱动运算放大器,并提供正常功率信号以响应于正常操作事件来驱动运算放大器,使得运算放大器提供 输出电压信号根据输入电压信号。 正常功率信号的电压电平高于节能功率信号的电压电平。 版权所有(C)2010,JPO&INPIT
    • 6. 发明专利
    • Digital-to-analog converter
    • 数字到模拟转换器
    • JP2009077370A
    • 2009-04-09
    • JP2008078438
    • 2008-03-25
    • Novatek Microelectronics Corpノバテック マイクロエレクトロニクス コープ.Novatek Microelectronics Corp.
    • HSU CHIN-HUNG
    • H03M1/80
    • H03M1/808
    • PROBLEM TO BE SOLVED: To provide a digital-to-analog converter which converts a digital signal to an analog voltage.
      SOLUTION: The digital-to-analog converter comprises a first row of resistors, a first group of switches arranged in cascade connection, a second row of resistors, and a second group of switches arranged in cascade connection, and the first row of resistors is electrically connected between a first voltage and an output terminal in the digital-to-analog converter. The first group of switches arranged in cascade connection has first and second switches controlled by a digital signal. The second row of resistors have first and second matching resistors electrically connected between a second voltage and the output terminal in the digital-to-analog converter. The second switches arranged in cascade connection include first and second matching switches controlled by an inverted signal of the digital signal. The digital-to-analog converter outputs an analog voltage through an output terminal.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供将数字信号转换为模拟电压的数模转换器。 解决方案:数模转换器包括第一行电阻器,串联连接的第一组开关,第二排电阻器和以级联连接布置的第二组开关,第一行 的电阻器电连接在数模转换器中的第一电压和输出端之间。 串联连接的第一组开关具有由数字信号控制的第一和第二开关。 第二排电阻器具有电连接在第二电压和数 - 模转换器中的输出端之间的第一和第二匹配电阻器。 串联连接的第二开关包括由数字信号的反相信号控制的第一和第二匹配开关。 数/模转换器通过输出端输出模拟电压。 版权所有(C)2009,JPO&INPIT