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    • 2. 发明申请
    • LATENCY CONTROL CIRCUIT AND SEMICONDUCTOR MEMORY DEVICE INCLUDING THE SAME
    • 延迟控制电路和包括其的半导体存储器件
    • US20110187427A1
    • 2011-08-04
    • US12751671
    • 2010-03-31
    • Kyung-Hoon KIMKyung-Whan Kim
    • Kyung-Hoon KIMKyung-Whan Kim
    • H03L7/06
    • H03L7/06
    • A latency control circuit includes a delay unit configured to delay an input signal for a delay corresponding to a phase difference between an external clock and an internal clock and generate a delayed input signal, a delay information generation unit configured to generate a delay information based on a latency information and a delay amount of the input signal caused by a chip including the latency control circuit, a shift unit configured to shift the delayed input signal for a time period corresponding to the delay information in synchronism with the internal clock and an asynchronous control unit configured to selectively control the shift unit to output the delayed input signal without performing a shift operation.
    • 延迟控制电路包括:延迟单元,被配置为延迟与外部时钟和内部时钟之间的相位差对应的延迟的输入信号,并生成延迟的输入信号;延迟信息生成单元,被配置为基于 延迟信息和由包括等待时间控制电路的芯片引起的输入信号的延迟量;移位单元,被配置为与延迟信号相对应的延迟输入信号与内部时钟同步地移位;异步控制 单元,被配置为选择性地控制所述移位单元以输出所述延迟的输入信号,而不执行移位操作。
    • 3. 发明申请
    • DELAY LOCKED LOOP CIRCUIT
    • 延迟锁定环路
    • US20090045857A1
    • 2009-02-19
    • US12255056
    • 2008-10-21
    • Kyung-Hoon KIM
    • Kyung-Hoon KIM
    • H03L7/06
    • H03L7/0814H03L7/0805H03L7/087
    • A delay locked loop increases an operation margin of a delay locked loop by using an output clock having more advanced phase than a DLL output clock. A clock delay compensation block receives an external clock signal to thereby generate a first multi clock and a second multi clock. A phase control block compares the first multi clock with the second multi clock to generate phase control signal controlling a shifting operation. A multi-phase delay control block performs a shifting operation based on the phase control signal to control the clock delay compensation block.
    • 延迟锁定环通过使用具有比DLL输出时钟更高级的相位的输出时钟来增加延迟锁定环的操作余量。 时钟延迟补偿块接收外部时钟信号从而产生第一多时钟和第二多时钟。 相位控制块将第一多时钟与第二多个时钟进行比较,以产生控制移位操作的相位控制信号。 多相延迟控制块基于相位控制信号执行移位操作,以控制时钟延迟补偿块。
    • 4. 发明申请
    • DELAY CELL AND PHASE LOCKED LOOP USING THE SAME
    • 延迟细胞和相位锁定环使用它
    • US20110204943A1
    • 2011-08-25
    • US13102938
    • 2011-05-06
    • Taek-Sang SONGKyung-Hoon KIMDae-Han KWON
    • Taek-Sang SONGKyung-Hoon KIMDae-Han KWON
    • H03L7/08
    • H03L7/0995H03K3/0322H03K5/133H03K2005/00208H03K2005/00234H03L2207/06
    • A phase locked loop that generates an internal clock by controlling a delay time of a delay cell according to conditions of PVT, thereby improving a jitter characteristic of the internal clock. The delay cell includes a first current controller for controlling first and second currents in response to a control voltage, and a second current controller for controlling the first and second currents in response to frequency range selection signals. The phase locked loop includes a phase comparator for comparing a reference clock with a feedback clock, a control voltage generator for generating a control voltage corresponding to an output of the phase comparator, and a voltage controlled oscillator for generating an internal clock having a frequency in response to the control voltage and one or more frequency range control signals, wherein the feedback clock is generated using the internal clock.
    • 通过根据PVT的条件控制延迟单元的延迟时间来产生内部时钟的锁相环,从而提高内部时钟的抖动特性。 延迟单元包括响应于控制电压控制第一和第二电流的第一电流控制器,以及响应频率范围选择信号控制第一和第二电流的第二电流控制器。 锁相环包括用于将参考时钟与反馈时钟进行比较的相位比较器,用于产生对应于相位比较器的输出的控制电压的控制电压发生器和用于产生具有频率的内部时钟的压控振荡器 响应于控制电压和一个或多个频率范围控制信号,其中使用内部时钟产生反馈时钟。