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    • 108. 发明授权
    • Synchronizer circuit which controls switching of clocks based upon
synchronicity, asynchronicity, or change in frequency
    • 同步电路,其基于同步性,异步性或频率变化来控制时钟的切换
    • US5721886A
    • 1998-02-24
    • US565519
    • 1995-11-30
    • Robert J. Miller
    • Robert J. Miller
    • G06F1/08G06F1/12
    • G06F1/08
    • A synchronizer circuit which bypasses synchronous clock signals or maintains synchronicity of synchronous clock signals without degrading system performance. The synchronizer circuit includes a synchronizer having first and second clock signal inputs. A switching circuit couples to the first clock signal and to the output of the synchronizer. The synchronizer circuit is preferably programmable, and includes a control circuit which determines whether the first and second frequencies are synchronous or asynchronous, which causes the switching circuit to select the synchronizer output when the first and second frequencies are asynchronous, and which causes the switching circuit to select the first clock signal when the first and second frequencies are synchronous. The switching circuit may also couple to a first stage output of the synchronizer, and the control circuit may cause the switching circuit to select the first stage output when the first and second frequencies are synchronous and either of the first and second frequencies is a multiple of the other. The switching circuit may also include logic elements for decoupling the first and second clock signals from a multi-frequency device when the first and second frequencies are changing.
    • 同步器电路旁路同步时钟信号或保持同步时钟信号的同步性,而不降低系统性能。 同步器电路包括具有第一和第二时钟信号输入的同步器。 开关电路耦合到第一时钟信号和耦合到同步器的输出端。 同步器电路优选地是可编程的,并且包括控制电路,其确定第一和第二频率是同步还是异步,这导致当第一和第二频率是异步的时,开关电路选择同步器输出,并且导致开关电路 当第一和第二频率同步时选择第一时钟信号。 开关电路还可以耦合到同步器的第一级输出端,并且当第一和第二频率是同步的并且第一和第二频率中的任一个是第一和第二频率的倍数时,控制电路可以使开关电路选择第一级输出 另一个。 切换电路还可以包括用于当第一和第二频率改变时从第一和第二时钟信号与多频率设备去耦的逻辑元件。
    • 109. 发明授权
    • Assembly of rotary hydraulic pumps
    • 旋转液压泵组装
    • US5586875A
    • 1996-12-24
    • US500376
    • 1995-07-10
    • Richard T. OndrejkoPaul J. CastiglioneRobert J. Miller
    • Richard T. OndrejkoPaul J. CastiglioneRobert J. Miller
    • F04C11/00F01C1/36
    • F16H61/0025F04C11/005
    • A first pump includes inner and outer intermeshing rotors, the outer rotor formed with external gear teeth. A second pump includes inner and outer meshing rotors, the outer rotor of the second pump having teeth continually engaged with the external teeth of the first pump outer rotor. The inner and outer rotors are formed with mutually intermeshing lobes that define between them pumping chambers through which hydraulic fluid is moved from a suction inlet to a pressurized outlet. A third pumping element includes pumping chambers located in the spaces between the intermeshing involute gear teeth on the outer rotors of the first and second pumps. A passage plate defines suction and pressure passages, which carry hydraulic fluid from a reservoir or sump to outlet ports, through which fluid is supplied to the hydraulic system.
    • 第一泵包括内外啮合转子,外转子形成外齿轮齿。 第二泵包括内啮合转子和外啮合转子,第二泵的外转子具有与第一泵外转子的外齿连续接合的齿。 内转子和外转子形成有互相啮合的凸角,它们在它们之间限定泵送室,液压流体通过该室从吸入口移动到加压出口。 第三抽吸元件包括位于第一和第二泵的外转子上的相互啮合的渐开线齿轮齿之间的空间中的泵送室。 通道板限定吸入和压力通道,其将液压流体从储存器或贮槽运送到出口,通过该通道向液压系统供应流体。