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    System and method for determining thermal shutdown characteristics
    1.
    发明授权
    System and method for determining thermal shutdown characteristics 有权
    用于确定热关断特性的系统和方法

    公开(公告)号：US07408369B2

    公开(公告)日：2008-08-05

    申请号：US11122624

    申请日：2005-05-05

    Applicant: Kenneth George MacLean ,  David John Baldwin ,  David Alexander Grant

    Inventor： Kenneth George MacLean ,  David John Baldwin ,  David Alexander Grant

    IPC: G01R31/26 ,  G01R31/28

    CPC classification number: H02H5/044

    Abstract: Systems and methods are disclosed to enable determining thermal protection characteristics of an integrated circuit. In one embodiment, an integrated circuit includes a proportional to absolute temperature (PTAT) generator that provides a PTAT signal that varies as a function of temperature. Thermal protection control system provides an output signal indicative of a thermal protection condition based at least in part on the PTAT signal. A monitoring system that provides a path to enable selective measuring of at least one signal associated with operation of the thermal protection control system.

    Abstract translation: 公开了系统和方法，以确定集成电路的热保护特性。 在一个实施例中，集成电路包括与绝对温度（PTAT）发生器成比例的提供作为温度的函数而变化的PTAT信号。 热保护控制系统至少部分地基于PTAT信号提供指示热保护条件的输出信号。 一种监测系统，其提供路径以使得能够选择性地测量与热保护控制系统的操作相关联的至少一个信号。

    Power efficient ADSL central office downstream class G power switch
    3.
    发明授权
    Power efficient ADSL central office downstream class G power switch 有权
    高效的ADSL中心局下游G级电源开关

    公开(公告)号：US07177418B2

    公开(公告)日：2007-02-13

    申请号：US10200459

    申请日：2002-07-22

    Applicant: Kenneth George Maclean ,  Marco Corsi

    Inventor： Kenneth George Maclean ,  Marco Corsi

    IPC: H04M1/00 ,  H04M3/00

    CPC classification number: H04M19/005

    Abstract: Systems and methods are provided for switching between power supply rail voltages for a differential driver device of a class G amplifier device. The amplifier device employs power MOSFETs to switch between supplying high supply voltages and low supply voltages to the power rails of the differential driver. The class G amplifier can be employed in driving an ADSL signal over a telephone line. A control device ramps the power supply rail voltage between low power supply states and high power supply states to mitigate noise and spikes that can be coupled to the output signal.

    Abstract translation: 提供了用于在G类放大器装置的差分驱动器装置的电源轨电压之间切换的系统和方法。 放大器装置使用功率MOSFET来在差分驱动器的电源轨提供高电源电压和低电源电压之间切换。 G类放大器可以用于通过电话线驱动ADSL信号。 控制装置在低电源状态和高电源状态之间斜坡上的电源轨电压以减轻可耦合到输出信号的噪声和尖峰。

    Zero-overhead class G amplifier with threshold detection
    4.
    发明授权
    Zero-overhead class G amplifier with threshold detection 有权
    零开销级G放大器，具有阈值检测

    公开(公告)号：US06614310B2

    公开(公告)日：2003-09-02

    申请号：US10001330

    申请日：2001-10-31

    Applicant: James Donald Quarfoot ,  Marco Corsi ,  Richard Knight Hester ,  Kenneth George Maclean

    Inventor： James Donald Quarfoot ,  Marco Corsi ,  Richard Knight Hester ,  Kenneth George Maclean

    IPC: H03G320

    CPC classification number: H03F1/025

    Abstract: The present invention provides an apparatus and method for operating driver amplifier (20) of a line driver circuit (10) from a lower set of power supply voltages, and from a higher set of voltages only when the amplitude of the signal (12) being transmitted by the line driver (20) requires it as determined by a comparator (18). Advantageously, this reduces the power dissipation in the line driver (10) by operating the line amplifier (20) the majority of the time from the lower supply voltage. A delay circuit (14) delays the signal to be amplified sufficient to allow the transitioning of the power supply voltages provided to the amplifier hysteresis of this power supply voltage switching may also be used to further reduce power dissipation.

    Abstract translation: 本发明提供了一种用于仅在信号（12）的振幅为（1）的情况下才从较低的一组电源电压和较高的一组电压来操作线路驱动器电路（10）的驱动放大器（20）的装置和方法 由线路驱动器（20）传输，由比较器（18）确定。 有利地，这通过在大部分时间从较低的电源电压操作线路放大器（20）来降低线路驱动器（10）中的功率消耗。 延迟电路（14）将要放大的信号足够延迟以允许提供给该电源电压切换的放大器滞后的电源电压的转换也可用于进一步降低功耗。

    Document endorser apparatus
    5.
    发明授权
    Document endorser apparatus 失效
    凭证机构

    公开(公告)号：US4220084A

    公开(公告)日：1980-09-02

    申请号：US958478

    申请日：1978-11-07

    Applicant: George Maclean ,  Eddy J. Milanes ,  Harold W. Pexton

    Inventor： George Maclean ,  Eddy J. Milanes ,  Harold W. Pexton

    IPC: B41L21/02 ,  B41L35/06 ,  G07B17/00 ,  B41F13/24

    CPC classification number: G07B17/00508 ,  B41L21/02 ,  B41L35/06

    Abstract: As documents are moved serially past a servo motor-driven endorser, it endorses a stamp upon each. A transport signal dependent on document speed, and an endorser signal generated by an optical tachometer mounted to the servo motor, provide input to a frequency comparator. The output of the comparator is a control signal which controls the servo motor speed to adjust the endorser rotational surface velocity to equalization with the document speed. Logic circuitry sets the endorser at a zero angular position. Responsive to an endorse command, the endorser is accelerated to document speed, receives ink from a supply roller, then endorses the passing document. A counter and a digital comparator in cooperation with the tachometer signal completion of the endorsement whereupon the endorser is decelerated and placed in the zero position. Should a succeeding endorse command occur prior to complete deceleration, acceleration is resumed after a delay count given by a PROM and based upon the pulse count when the succeeding endorse command is received.

    Abstract translation: 随着文件连续移动通过伺服电机驱动的支持者，它会在每一个上签署一个印章。 取决于文档速度的传输信号和由安装到伺服电动机的光学转速计产生的支持者信号向频率比较器提供输入。 比较器的输出是一个控制信号，控制伺服电机的转速，以便将记号转盘旋转速度调节到文档速度均衡。 逻辑电路将支持者置于零角位置。 响应一个认可的指令，代理人加速记录速度，从供应辊接收墨水，然后批准经过的文件。 一个计数器和一个数字比较器与转速表信号协调完成后，代言人减速并放置在零位置。 如果在完全减速之前发生后续的认可命令，则在由PROM给出的延迟计数之后并且当接收到后续认可命令时基于脉冲计数恢复加速度。

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