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    • 1. 发明授权
    • Low jitter frequency synthesizer
    • 低抖动频率合成器
    • US07274231B1
    • 2007-09-25
    • US11229472
    • 2005-09-15
    • Timothy GillespieWilliam G. Baker
    • Timothy GillespieWilliam G. Baker
    • H03L7/06
    • H03L7/06
    • A frequency synthesizer IC is disclosed that includes a variable delay circuit, a fractional-N phase locked loop circuit, and a feedback loop. The variable delay circuit is electrically coupled to the input of the fractional-N phase locked loop circuit. The feedback loop couples a first control signal from the fractional-N phase locked loop to the variable delay circuit. The variable delay circuit generates a reference signal that has a phase delay that varies in accordance with a second control signal and a first control signal. The fractional-N phase locked loop circuit is operable upon receiving the reference signal to generate the first control signal, the second control signal, and an output signal having a frequency that is a non-integer product of the reference signal.
    • 公开了一种频率合成器IC,其包括可变延迟电路,分数N锁相环电路和反馈回路。 可变延迟电路电耦合到分数N锁相环电路的输入端。 反馈回路将来自分数N锁相环的第一控制信号耦合到可变延迟电路。 可变延迟电路产生具有根据第二控制信号和第一控制信号而变化的相位延迟的参考信号。 分数N锁相环电路在接收到参考信号以产生第一控制信号,第二控制信号和具有作为参考信号的非整数乘积的频率的输出信号时可操作。
    • 6. 发明授权
    • Method and circuitry for writing data
    • 用于写入数据的方法和电路
    • US6101134A
    • 2000-08-08
    • US344514
    • 1999-06-25
    • Sanjay K. SanchetiGeorge M. AnselWilliam G. BakerJames E. Kelly
    • Sanjay K. SanchetiGeorge M. AnselWilliam G. BakerJames E. Kelly
    • G11C7/10G11C11/407
    • G11C7/1078
    • An apparatus comprising a first circuit, a reset circuit and an output circuit. The first circuit may be configured to generate one or more state signals in response to (i) a first and a second write control signals and (ii) one or more control signals. The reset circuit may be configured to generate the one or more control signals in response to (i) a global write signal and (ii) the first and second state signals. The output circuit may be configured to generate a third and fourth write control signal in response to (i) the global write signal (ii) a data input signal and (iii) the first and second state signals. In one example, the third and fourth write control signals may generate a pulse on either the third or the fourth write control signals in response to a transition of the data input signal.
    • 一种包括第一电路,复位电路和输出电路的装置。 第一电路可以被配置为响应于(i)第一和第二写控制信号和(ii)一个或多个控制信号而产生一个或多个状态信号。 复位电路可以被配置为响应于(i)全局写信号和(ii)第一和第二状态信号而产生一个或多个控制信号。 输出电路可以被配置为响应于(i)全局写入信号(ii)数据输入信号和(iii)第一和第二状态信号而产生第三和第四写入控制信号。 在一个示例中,响应于数据输入信号的转变,第三和第四写入控制信号可以在第三或第四写入控制信号上产生脉冲。
    • 8. 发明授权
    • RC delay with feedback
    • RC延迟与反馈
    • US5793238A
    • 1998-08-11
    • US743005
    • 1996-11-01
    • William G. Baker
    • William G. Baker
    • H03K5/13
    • H03K5/133
    • The present invention concerns a delay circuit that provides a fixed amount of delay that is generally independent of process variations. An input resistance is provided that may be presented to a threshold device, such as an inverter, that may then be presented as an output. The output of the threshold device may also be presented through a feedback path comprising a capacitive device to the input of the threshold device. The feedback through the capacitive load actively resists the movement of the load. As a result, the delay provided by the circuit is generally resistant to process variations.
    • 本发明涉及延迟电路,其提供通常与过程变化无关的固定量的延迟。 提供了可以呈现给阈值装置(例如逆变器)的输入电阻,其然后可以被呈现为输出。 阈值装置的输出也可以通过包括电容性装置的反馈路径呈现给阈值装置的输入端。 通过电容性负载的反馈主动抵抗负载的移动。 结果,由电路提供的延迟通常抵抗工艺变化。