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    • 3. 发明授权
    • Circuit and method for self-refresh of DRAM cells through monitoring of cell leakage currents
    • 通过监测电池漏电流来自动刷新DRAM单元的电路和方法
    • US06862239B1
    • 2005-03-01
    • US10696291
    • 2003-10-29
    • Chien-Hua HuangChung-Cheng Chou
    • Chien-Hua HuangChung-Cheng Chou
    • G11C11/406G11C7/00
    • G11C11/40615G11C11/406G11C2211/4068
    • A circuit and a method for self refresh of DRAM cells are provided. The circuit comprises a bias generator and an oscillator. The bias generator comprises a first current generator, a second current generator and a converter. The first current generator generates a first leakage current of “0” state cells. The second current generator generates a second leakage current of “1” state cells. The converter transforms a current comprising the first leakage current and the second leakage current into output biases. The method comprises generating leakage currents from memory cells; transforming the leakage currents into output biases for determining a self refresh period; and using the output biases to control an oscillator for generating a periodical signal pulse in response to the leakage currents.
    • 提供了一种用于DRAM单元的自刷新的电路和方法。 电路包括偏置发生器和振荡器。 偏置发生器包括第一电流发生器,第二电流发生器和转换器。 第一电流发生器产生“0”状态单元的第一泄漏电流。 第二电流发生器产生“1”状态单元的第二泄漏电流。 转换器将包括第一漏电流和第二漏电流的电流转换成输出偏压。 该方法包括从存储器单元产生泄漏电流; 将泄漏电流转换成输出偏压,以确定自刷新周期; 以及使用所述输出偏压来控制用于响应于所述漏电流产生周期性信号脉冲的振荡器。
    • 9. 发明申请
    • Voltage transfer circuit
    • 电压传输电路
    • US20060232322A1
    • 2006-10-19
    • US11162667
    • 2005-09-19
    • Chien-Hua Huang
    • Chien-Hua Huang
    • H03K17/687H03H11/24H03K17/296
    • H03K19/0013H03K19/018521
    • A voltage transfer circuit outputs an equivalent to an input voltage when enabled. Otherwise, the transfer circuit is in standby and outputs an equivalent to a standby voltage (e.g., signal ground). The voltage transfer circuit includes a switching circuit, a standby circuit, and an input-transfer circuit. The output of the transfer circuit is fed back to both the switching circuit and the input-transfer circuit. When the transfer circuit is in standby, the feedback of the output voltage provides for voltage-balancing in the input-transfer circuit, thereby reducing or eliminating leakage current in the input-transfer circuit. Similarly, when the transfer circuit is in active mode, the feedback of the output voltage provides for voltage-balancing in the standby circuit, thereby reducing or eliminating leakage current in the standby circuit.
    • 电压传输电路在使能时输出等效于输入电压。 否则,传输电路处于待机状态,并输出等效于待机电压(例如,信号地)。 电压传输电路包括开关电路,备用电路和输入传输电路。 传输电路的输出反馈给开关电路和输入传输电路。 当传送电路处于待机状态时,输出电压的反馈提供输入传输电路中的电压平衡,从而减少或消除输入传输电路中的漏电流。 类似地,当传输电路处于主动模式时,输出电压的反馈提供备用电路中的电压平衡,从而减少或消除备用电路中的漏电流。