利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

7 条记录 (耗时 0.03 秒)

    PWM-based measurement interface for a micro-machined electrostatic actuator
    2.
    发明授权
    PWM-based measurement interface for a micro-machined electrostatic actuator 有权
    用于微加工静电执行器的基于PWM的测量接口

    公开(公告)号：US06674383B2

    公开(公告)日：2004-01-06

    申请号：US10012688

    申请日：2001-10-30

    申请人： David Horsley ,  Robert Conant ,  William Clark

    发明人： David Horsley ,  Robert Conant ,  William Clark

    IPC分类号： H03M166

    CPC分类号： G01R31/2829 ,  H02N1/002

    摘要： Methods and apparatus for varying and measuring the position of a micromachined electrostatic actuator using a pulse width modulated (PWM) pulse train are disclosed. One or more voltage pulses are applied to the actuator. In each of the pulses, a voltage changes from a first state to a second state and remains in the second state for a time tpulse before returning to the first state. The position of the actuator may be varied by varying the time &Dgr;tpulse. A position of the actuator may be determined by measuring a capacitance of the actuator when the voltage changes state, whether the time t is varied or not. An apparatus for varying the position of a MEMS device may include a pulse width modulation generator coupled to the MEMS device an integrator coupled to the MEMS device and an analog-to-digital converter coupled to the integrator. The integrator may measure a charge transferred during a transition of a pulse from the pulse generator. The integrator may include an amplifier, an integrator capacitor, a hold capacitor, a compensation voltage generator and three switches. The hold capacitor and integrator capacitor may be coupled to a MEMS device. The integrator capacitor, hold capacitor, and compensation voltage generator may be selectively coupled to the amplifier by two of the switches. The MEMS device and hold capacitor may be selectively coupled to ground by a third switch.

    摘要翻译： 公开了使用脉冲宽度调制（PWM）脉冲串来改变和测量微加工静电致动器的位置的方法和装置。 一个或多个电压脉冲被施加到致动器。 在每个脉冲中，电压从第一状态改变到第二状态，并且在返回到第一状态之前保持在第二状态一段时间t脉冲。 致动器的位置可以通过改变Deltatpulse的时间来改变。 致动器的位置可以通过在电压改变状态时测量致动器的电容，时间t是否变化来确定。 用于改变MEMS器件的位置的装置可以包括耦合到MEMS器件的耦合到MEMS器件的积分器和耦合到积分器的模数转换器的脉宽调制发生器。 积分器可以测量在来自脉冲发生器的脉冲的转变期间传送的电荷。 积分器可以包括放大器，积分电容器，保持电容器，补偿电压发生器和三个开关。 保持电容器和积分电容器可以耦合到MEMS器件。 积分器电容器，保持电容器和补偿电压发生器可以通过两个开关选择性地耦合到放大器。 MEMS器件和保持电容器可以通过第三开关选择性地耦合到地。

    PWM-based measurement interface for a micro-machined electrostatic actuator
    3.
    发明授权
    PWM-based measurement interface for a micro-machined electrostatic actuator 有权
    用于微加工静电执行器的基于PWM的测量接口

    公开(公告)号：US06933873B1

    公开(公告)日：2005-08-23

    申请号：US10747875

    申请日：2003-12-29

    申请人： David Horsley ,  Robert Conant ,  William Clark

    发明人： David Horsley ,  Robert Conant ,  William Clark

    IPC分类号： G01R31/28 ,  H02N1/00 ,  H03M1/12 ,  G01R27/26

    CPC分类号： G01R31/2829 ,  H02N1/002

    摘要： Methods and apparatus for varying and measuring the position of a micromachined electrostatic actuator using a pulse width modulated (PWM) pulse train are disclosed. One or more voltage pulses are applied to the actuator. In each of the pulses, a voltage changes from a first state to a second state and remains in the second state for a time tpulse before returning to the first state. The position of the actuator may be varied by varying the time Δtpulse. A position of the actuator may be determined by measuring a capacitance of the actuator when the voltage changes state, whether the time t is varied or not. An apparatus for varying the position of a MEMS device may include a pulse width modulation generator coupled to the MEMS device an integrator coupled to the MEMS device and an analog-to-digital converter coupled to the integrator. The integrator may measure a charge transferred during a transition of a pulse from the pulse generator. The integrator may include an amplifier, an integrator capacitor, a hold capacitor, a compensation voltage generator and three switches. The hold capacitor and integrator capacitor may be coupled to a MEMS device. The integrator capacitor, hold capacitor, and compensation voltage generator may be selectively coupled to the amplifier by two of the switches. The MEMS device and hold capacitor may be selectively coupled to ground by a third switch.

    摘要翻译： 公开了使用脉冲宽度调制（PWM）脉冲串来改变和测量微加工静电致动器的位置的方法和装置。 一个或多个电压脉冲被施加到致动器。 在每个脉冲中，电压从第一状态变为第二状态，并且在返回到第一状态之前保持在第二状态一段时间t 。 致动器的位置可以通过改变时间差动脉冲来改变。 致动器的位置可以通过在电压改变状态时测量致动器的电容，时间t是否变化来确定。 用于改变MEMS器件的位置的装置可以包括耦合到MEMS器件的耦合到MEMS器件的积分器和耦合到积分器的模数转换器的脉宽调制发生器。 积分器可以测量在来自脉冲发生器的脉冲的转变期间传送的电荷。 积分器可以包括放大器，积分电容器，保持电容器，补偿电压发生器和三个开关。 保持电容器和积分电容器可以耦合到MEMS器件。 积分器电容器，保持电容器和补偿电压发生器可以通过两个开关选择性地耦合到放大器。 MEMS器件和保持电容器可以通过第三开关选择性地耦合到地。

    System and method for securely communicating across multiple networks using a single radio
    6.
    发明授权
    System and method for securely communicating across multiple networks using a single radio 有权
    使用单个无线电安全地通过多个网络进行通信的系统和方法

    公开(公告)号：US08832428B2

    公开(公告)日：2014-09-09

    申请号：US13296552

    申请日：2011-11-15

    申请人： Nathan Ota ,  Robert Conant ,  Michel Veillette ,  Vincent Bemmel ,  Frederick Enns

    发明人： Nathan Ota ,  Robert Conant ,  Michel Veillette ,  Vincent Bemmel ,  Frederick Enns

    IPC分类号： H04L29/06 ,  H04W12/04 ,  H04W84/10 ,  H04W88/06 ,  H04W12/06

    CPC分类号： H04W12/04 ,  H04L63/0846 ,  H04W12/06 ,  H04W84/10 ,  H04W88/06

    摘要： A communications module for facilitating secure communications on a first network and a second network includes: a single transceiver for receiving and transmitting first network messages from and to the first network and at least transmitting second network messages to the second network; at least a first processor connected to the single transceiver for processing one or more first network messages and second network messages; the at least a first processor including first network logic for processing first network messages and second network logic for processing second network messages; and the second network logic including instructions for securing second network messages such that decryption of the second network messages is limited to a particular receiving device on the second network. The second network messages may include commodity pricing and use information.

    摘要翻译： 用于促进在第一网络和第二网络上的安全通信的通信模块包括：单个收发器，用于从第一网络接收和发送第一网络消息，并且至少向第二网络发送第二网络消息; 连接到所述单个收发器的至少第一处理器，用于处理一个或多个第一网络消息和第二网络消息; 所述至少第一处理器包括用于处理第一网络消息的第一网络逻辑和用于处理第二网络消息的第二网络逻辑; 并且所述第二网络逻辑包括用于保护第二网络消息的指令，使得所述第二网络消息的解密被限制在所述第二网络上的特定接收设备。 第二网络消息可以包括商品定价和使用信息。

    System and Method for Securely Communicating Across Multiple Networks Using a Single Radio
    7.
    发明申请
    System and Method for Securely Communicating Across Multiple Networks Using a Single Radio 有权
    使用单个无线电安全地通过多个网络通信的系统和方法

    公开(公告)号：US20120124367A1

    公开(公告)日：2012-05-17

    申请号：US13296552

    申请日：2011-11-15

    申请人： Nathan Ota ,  Robert Conant ,  Michel Veillette ,  Vincent Bemmel ,  Frederick Enns

    发明人： Nathan Ota ,  Robert Conant ,  Michel Veillette ,  Vincent Bemmel ,  Frederick Enns

    IPC分类号： H04L9/00

    CPC分类号： H04W12/04 ,  H04L63/0846 ,  H04W12/06 ,  H04W84/10 ,  H04W88/06

    摘要： A communications module for facilitating secure communications on a first network and a second network includes: a single transceiver for receiving and transmitting first network messages from and to the first network and at least transmitting second network messages to the second network; at least a first processor connected to the single transceiver for processing one or more first network messages and second network messages; the at least a first processor including first network logic for processing first network messages and second network logic for processing second network messages; and the second network logic including instructions for securing second network messages such that decryption of the second network messages is limited to a particular receiving device on the second network. The second network messages may include commodity pricing and use information.

    摘要翻译： 用于促进在第一网络和第二网络上的安全通信的通信模块包括：单个收发器，用于从第一网络接收和发送第一网络消息，并且至少向第二网络发送第二网络消息; 连接到所述单个收发器的至少第一处理器，用于处理一个或多个第一网络消息和第二网络消息; 所述至少第一处理器包括用于处理第一网络消息的第一网络逻辑和用于处理第二网络消息的第二网络逻辑; 并且所述第二网络逻辑包括用于保护第二网络消息的指令，使得所述第二网络消息的解密被限制在所述第二网络上的特定接收设备。 第二网络消息可以包括商品定价和使用信息。