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    • 7. 发明授权
    • Control circuit and method for capacitor charging circuit
    • 电容充电电路的控制电路及方法
    • US08237415B2
    • 2012-08-07
    • US12255742
    • 2008-10-22
    • Tatsuya IwasakiIsao Yamamoto
    • Tatsuya IwasakiIsao Yamamoto
    • H02J7/00H02M7/5383H05B41/16
    • H02M3/33523G01R19/0084
    • An output voltage monitoring circuit monitors an output voltage of a capacitor charging circuit. A first sample-and-hold circuit samples and holds a voltage of a connection point of a primary coil of a transformer and a switching transistor. A first monitoring comparator compares output of the first sample-and-hold circuit with a predetermined first reference voltage. When the output of the first sample-and-hold circuit exceeds the first reference voltage, a signal processor executes predetermined signal processing. The first sample-and-hold circuit starts a sampling period after a predetermined first time has elapsed after the switching transistor is turned OFF. When a voltage drop across a detection resistor reaches a third reference voltage, the first sample-and-hold circuit ends the sampling period.
    • 输出电压监视电路监视电容器充电电路的输出电压。 第一采样保持电路对变压器的初级线圈和开关晶体管的连接点的电压进行采样并保持。 第一监视比较器将第一采样保持电路的输出与预定的第一参考电压进行比较。 当第一采样保持电路的输出超过第一参考电压时,信号处理器执行预定的信号处理。 第一采样保持电路在开关晶体管截止之后经过预定的第一时间之后开始采样周期。 当检测电阻上的电压降达到第三参考电压时,第一个采样和保持电路结束采样周期。
    • 8. 发明授权
    • Charge control circuit
    • 充电控制电路
    • US07898217B2
    • 2011-03-01
    • US11801323
    • 2007-05-09
    • Satoru NateIsao Yamamoto
    • Satoru NateIsao Yamamoto
    • H02J7/00
    • H02J7/0052H02J7/0068
    • In a charge control circuit that adjusts a charging current flowing through a battery to be charged from a power supply, a sense resistor is provided on a charging path to the battery from an external power supply. A charging current adjustment circuit adjusts the charging current based on an error voltage between a voltage drop across the sense resistor and a predetermined reference voltage. The charging control circuit is integrated in a package. The charging current is inputted to a current input terminal. A battery terminal outputs the charging current to the battery. The current input terminal and the battery terminal also function as terminals used to measure a resistance value of the sense resistor. A voltage monitoring terminal is provided to measure the reference voltage in an inspection process.
    • 在从电源调整流过待充电电池的充电电流的充电控制电路中,从外部电源向充电路径提供感测电阻。 充电电流调节电路基于检测电阻器两端的电压降与预定参考电压之间的误差电压来调节充电电流。 充电控制电路集成在一个封装中。 充电电流被输入到电流输入端。 电池端子输出到电池的充电电流。 电流输入端子和电池端子也用作测量检测电阻的电阻值的端子。 提供电压监视端子以在检查过程中测量参考电压。
    • 10. 发明授权
    • Data transmission system and cable
    • 数据传输系统和电缆
    • US07724035B2
    • 2010-05-25
    • US12242062
    • 2008-09-30
    • Isao Yamamoto
    • Isao Yamamoto
    • H03K17/16
    • H04L25/45
    • A data transmission system capable of transmitting data at high speed without being bound by a counterpart's power supply voltage can be realized. The data transmission system comprises multiple electronic equipment having individual power supplies, a cable for connecting between the multiple electronic equipment so as to transmit signals therebetween, digital data transmitting circuits extending between the multiple electronic equipment and the cable and each having an open drain type output section at the transmitting end, and an input section provided with a pull-up type resistor at the receiving end, wherein the resistor and the output section are moved from the electronic equipment to the connector of the cable so that parasitic capacitance for restricting time constant of waveforms of signals when rising is changed from a capacitance to a small capacitance.
    • 可以实现能够高速传输数据而不受对方的电源电压限制的数据传输系统。 数据传输系统包括具有单独电源的多个电子设备,用于在多个电子设备之间连接以在其间传输信号的电缆,在多个电子设备和电缆之间延伸的每个具有开漏型输出的数字数据传输电路 在接收端具有上拉式电阻器的输入部分,其中电阻器和输出部分从电子设备移动到电缆的连接器,使得用于限制时间常数的寄生电容 的上升时的信号波形从电容变为小电容。