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    • 2. 发明授权
    • Start-up circuit and start-up method
    • 启动电路和启动方式
    • US07876144B2
    • 2011-01-25
    • US11801167
    • 2007-05-09
    • Tetsuro HashimotoAkihito ItoYoshikazu SasakiIsao Yamamoto
    • Tetsuro HashimotoAkihito ItoYoshikazu SasakiIsao Yamamoto
    • H03K3/00
    • G06F1/24G06F1/26G06F1/28
    • A start-up circuit receives a start-up signal instructing start-up of an equipment mounted with the circuit, and executes a predetermined sequence when start-up is instructed by the start-up signal. An oscillator generates a clock signal. A sequence circuit receives the start-up signal and a clock signal output from the oscillator, measures time by counting the clock signal when the start-up signal transits to a predetermined level, and executes a predetermined event at a predetermined timing. The oscillator operates for a period where the start-up signal is at the predetermined level if the start-up signal is at the predetermined level during the period the power key of the equipment mounted with the circuit is being pushed.
    • 启动电路接收指示启动安装有电路的设备的启动信号,并且在启动信号指示启动时执行预定的顺序。 振荡器产生时钟信号。 序列电路接收启动信号和从振荡器输出的时钟信号,通过在启动信号转换到预定电平时对时钟信号进行计数来测量时间,并在预定定时执行预定事件。 如果启动信号处于预定电平,则在启动信号处于预定电平的期间,振荡器工作在安装有电路的设备的电源键被按下的期间。
    • 3. 发明授权
    • Under voltage lock out circuit and method
    • 欠压锁定电路和方法
    • US07768247B2
    • 2010-08-03
    • US12345493
    • 2008-12-29
    • Yoshikazu SasakiTetsuro HashimotoIsao Yamamoto
    • Yoshikazu SasakiTetsuro HashimotoIsao Yamamoto
    • H02H3/24G05F5/00
    • H02M1/36Y10S323/901
    • An under voltage lock out circuit which monitors an input voltage and executes a predetermined sequence when the input voltage satisfies a predetermined condition may include a voltage comparison unit which compares the input voltage and a predetermined threshold voltage, and outputs a comparison signal; a logic circuit which receives the comparison signal output from the voltage comparison unit and a start-up signal instructing start-up of an equipment mounted with the under voltage lock out circuit, and asserts a sequence control signal when start-up is instructed by the start-up signal in a state the input voltage is higher than the threshold voltage; and a sequence circuit which executes a predetermined sequence when the sequence control signal is asserted, wherein the predetermined threshold voltage is switched according to the sequence control signal.
    • 当输入电压满足预定条件时,监视输入电压并执行预定序列的欠压锁定电路可以包括比较输入电压和预定阈值电压并输出比较信号的电压比较单元; 接收从电压比较单元输出的比较信号的逻辑电路和指示安装有欠压锁定电路的设备的起动信号的启动信号,并且当启动指示时启动序列控制信号 启动信号处于输入电压高于阈值电压的状态; 以及当所述序列控制信号被断言时执行预定序列的序列电路,其中根据所述序列控制信号切换所述预定阈值电压。
    • 9. 发明申请
    • Battery charging circuit, portable electronic device and semiconductor integrated circuit
    • 电池充电电路,便携式电子设备和半导体集成电路
    • US20070296377A1
    • 2007-12-27
    • US11804075
    • 2007-05-17
    • Tetsuro HashimotoIsao Yamamoto
    • Tetsuro HashimotoIsao Yamamoto
    • H02J7/06H02J7/04
    • H02J7/0052
    • A battery charging circuit is used by being connected to a direct-current power source. The battery charging circuit includes a control transistor, a backflow prevention transistor and a charging controller. The control transistor is disposed in a charging path between the direct-current power source and a battery, and is configured to control a direct-current voltage from the direct-current power source, and to output controlled direct-current voltage as a charging voltage. The backflow prevention transistor is disposed in the charging path, and is configured to output the charging voltage to the battery, and to be turned off when an electric current flows backward from the battery to the direct-current power source. The charging controller is configured to turn on the backflow prevention transistor when charging of the battery starts, and to turn on the control transistor after a fixed period of time elapses from a start of the charging.
    • 通过连接到直流电源来使用电池充电电路。 电池充电电路包括控制晶体管,防回流晶体管和充电控制器。 控制晶体管设置在直流电源和电池之间的充电路径中,并且被配置为控制来自直流电源的直流电压,并且输出受控直流电压作为充​​电电压 。 防回流晶体管设置在充电路径中,并且被配置为向电池输出充电电压,并且当电流从电池向后流动到直流电源时被关断。 充电控制器被配置为当电池充电开始时接通防回流晶体管,并且在从充电开始经过固定时间段之后接通控制晶体管。
    • 10. 发明授权
    • Battery charging circuit with backflow prevention transistor, portable electronic device and semiconductor integrated circuit with backflow prevention transistor
    • 带防回流晶体管的电池充电电路,便携式电子器件和具防回流晶体管的半导体集成电路
    • US07884578B2
    • 2011-02-08
    • US11804075
    • 2007-05-17
    • Tetsuro HashimotoIsao Yamamoto
    • Tetsuro HashimotoIsao Yamamoto
    • H02J7/06H02J7/24
    • H02J7/0052
    • A battery charging circuit is used by being connected to a direct-current power source. The battery charging circuit includes a control transistor, a backflow prevention transistor and a charging controller. The control transistor is disposed in a charging path between the direct-current power source and a battery, and is configured to control a direct-current voltage from the direct-current power source, and to output controlled direct-current voltage as a charging voltage. The backflow prevention transistor is disposed in the charging path, and is configured to output the charging voltage to the battery, and to be turned off when an electric current flows backward from the battery to the direct-current power source. The charging controller is configured to turn on the backflow prevention transistor when charging of the battery starts, and to turn on the control transistor after a fixed period of time elapses from a start of the charging.
    • 通过连接到直流电源来使用电池充电电路。 电池充电电路包括控制晶体管,防回流晶体管和充电控制器。 控制晶体管设置在直流电源和电池之间的充电路径中,并且被配置为控制来自直流电源的直流电压,并输出受控直流电压作为充​​电电压 。 防回流晶体管设置在充电路径中,并且被配置为向电池输出充电电压,并且当电流从电池向后流动到直流电源时被关断。 充电控制器被配置为当电池充电开始时接通防回流晶体管,并且在从充电开始经过固定时间段之后接通控制晶体管。