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    • 1. 发明授权
    • Controller for delay locked loop circuits
    • 延迟锁定环路控制器
    • US07245540B2
    • 2007-07-17
    • US09874898
    • 2001-06-05
    • William JonesWen Li
    • William JonesWen Li
    • G11C7/00
    • G11C7/222G11C7/22
    • A method of controlling a delay locked loop (DLL) in a memory device is provided. The DLL generates an internal clock signal based on an external clock signal. The DLL constantly responds to variations in operating condition of the memory device to keep the external and internal clock synchronized. The method involves preventing the DLL from responding to a change in operating condition such as a change in the supply voltage of the memory device during an operational mode of the memory device such as an active mode, a read mode, or a refresh mode.
    • 提供了一种控制存储器件中的延迟锁定环(DLL)的方法。 DLL根据外部时钟信号产生内部时钟信号。 DLL不断响应存储器件的工作状态的变化,以保持外部和内部时钟同步。 该方法涉及防止DLL在诸如活动模式,读取模式或刷新模式的存储器件的操作模式期间响应于操作条件的变化,例如存储器件的电源电压的变化。
    • 4. 发明授权
    • Method of controlling a delay locked loop
    • 控制延迟锁定环路的方法
    • US06819603B2
    • 2004-11-16
    • US10231512
    • 2002-08-29
    • William JonesWen Li
    • William JonesWen Li
    • G11C700
    • G11C7/222G11C7/22
    • A method of controlling a delay locked loop (DLL) in a memory device is provided. The DLL generates an internal clock signal based on an external clock signal. The DLL constantly responds to variations in operating condition of the memory device to keep the external and internal clock synchronized. The method involves preventing the DLL from responding to a change in operating condition such as a change in the supply voltage of the memory device during an operational mode of the memory device such as an active mode, a read mode, or a refresh mode.
    • 提供了一种控制存储器件中的延迟锁定环(DLL)的方法。 DLL根据外部时钟信号产生内部时钟信号。 DLL不断响应存储器件的工作状态的变化,以保持外部和内部时钟同步。 该方法涉及防止DLL在诸如活动模式,读取模式或刷新模式的存储器件的操作模式期间响应于操作条件的变化,例如存储器件的电源电压的变化。