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71 条记录 (耗时 0.029 秒)

    Delay interpolation in a ring oscillator delay stage
    52.
    发明授权
    Delay interpolation in a ring oscillator delay stage 有权

    公开(公告)号：US07088191B2

    公开(公告)日：2006-08-08

    申请号：US10953023

    申请日：2004-09-29

    申请人： Fabrice Paillet ,  David Rennie ,  Tanay Karnik ,  Jianping Xu

    发明人： Fabrice Paillet ,  David Rennie ,  Tanay Karnik ,  Jianping Xu

    IPC分类号： H03K3/03 ,  H03L7/00

    CPC分类号： H03K3/0322

    摘要： According to some embodiments, a circuit includes a delay stage of a ring oscillator. The delay stage may include a first differential pair, a second differential pair, and a third differential pair. The first differential pair may be coupled to a first current-steering circuit, receive a differential input signal, and output a first differential signal. The second differential pair may receive the differential input signal and output a second differential signal, and the third differential pair may be coupled to a second current-steering circuit, receive the second differential signal from the second differential pair, and output the first differential signal. An amount of delay between the differential input signal and the first differential signal is based on relative amounts of current steered by the first current-steering circuit and the second current-steering circuit.

    Resonance suppression circuit
    54.
    发明授权
    Resonance suppression circuit 有权
    谐振抑制电路

    公开(公告)号：US06995605B2

    公开(公告)日：2006-02-07

    申请号：US10813169

    申请日：2004-03-31

    申请人： Peter Hazucha ,  Jianping Xu ,  Gerhard Schrom ,  Tanay Karnik ,  Fabrice Paillet ,  Vivek K. De

    发明人： Peter Hazucha ,  Jianping Xu ,  Gerhard Schrom ,  Tanay Karnik ,  Fabrice Paillet ,  Vivek K. De

    IPC分类号： H03K5/00

    CPC分类号： G06F1/305 ,  G06F1/28 ,  Y10T307/839

    摘要： A resonance suppression circuit is provided to suppress resonance on a power grid of a chip or die. The resonance suppression circuit may include a band-pass filter portion, a comparator portion, an amplification portion and a current dissipation portion. The band-pass filter portion may include an inverter coupled between two signal lines of the power grid. The comparator portion may sense voltage fluctuations at approximately the resonance frequency and trigger the current dissipation portion to turn ON and thereby change the frequency spectrum of the load current on the power grid to suppress the power grid resonance.

    摘要翻译： 提供谐振抑制电路以抑制芯片或管芯的电网上的共振。 谐振抑制电路可以包括带通滤波器部分，比较器部分，放大部分和电流消耗部分。 带通滤波器部分可以包括耦合在电网的两个信号线之间的反相器。 比较器部分可以感测大致谐振频率处的电压波动，并且触发电流耗散部分导通，从而改变电网上的负载电流的频谱以抑制电网谐振。

    Optical offset signal cancellation for optical receiver
    56.
    发明申请
    Optical offset signal cancellation for optical receiver 有权
    光接收机的光偏移信号消除

    公开(公告)号：US20050232637A1

    公开(公告)日：2005-10-20

    申请号：US11026632

    申请日：2004-12-30

    申请人： Fabrice Paillet ,  Tanay Karnik ,  Jianping Xu ,  Donald Gardner

    发明人： Fabrice Paillet ,  Tanay Karnik ,  Jianping Xu ,  Donald Gardner

    IPC分类号： H04B10/00 ,  H04B10/158

    CPC分类号： H04B10/66

    摘要： A laser driver for high speed interconnections may convert a digital signal to a current train of a bias mode to represent logical zero and of a modulation mode to represent logical one. An optical signal thus produced may include an optical offset. An optical receiver may include a photo-detector to receive the optical signal and generate a current signal, which includes a corresponding current offset. A first amplifier stage converts the current signal to a voltage signal and a second amplifier stage generates a digital output from the voltage signal. One or more low-pass filters may be used to filter the digital output and generate a filtered offset signal for a differential amplifier to generate an offset cancellation signal. The offset cancellation signal may be provided to offset cancellation circuitry to remove the current offset from the current signal generated by the photo-detector.

    摘要翻译： 用于高速互连的激光驱动器可以将数字信号转换为偏置模式的当前列，以表示逻辑零和调制模式以表示逻辑1。 如此产生的光信号可以包括光偏移。 光接收器可以包括光检测器，用于接收光信号并产生电流信号，其包括对应的电流偏移。 第一放大器级将电流信号转换成电压信号，第二放大器级从电压信号产生数字输出。 可以使用一个或多个低通滤波器来对数字输出进行滤波，并产生用于差分放大器的滤波偏移信号以产生偏移消除信号。 可以将偏移消除信号提供给偏移消除电路，以从光电检测器产生的电流信号中去除电流偏移。

    RECONFIGURABLE APPARATUS FOR HIERARCHICAL COLLECTIVE NETWORKS WITH BYPASS MODE
    58.
    发明申请
    RECONFIGURABLE APPARATUS FOR HIERARCHICAL COLLECTIVE NETWORKS WITH BYPASS MODE 有权
    具有旁路模式的分层收集网络的可重构设备

    公开(公告)号：US20150006849A1

    公开(公告)日：2015-01-01

    申请号：US13930976

    申请日：2013-06-28

    申请人： Jianping Xu ,  Asit K. Mishra ,  Joshua B. Fryman ,  David S. Dunning

    发明人： Jianping Xu ,  Asit K. Mishra ,  Joshua B. Fryman ,  David S. Dunning

    IPC分类号： G06F15/80

    CPC分类号： G06F15/17325

    摘要： A reconfigurable tree apparatus with a bypass mode and a method of using the reconfigurable tree apparatus are disclosed. The reconfigurable tree apparatus uses a short-circuit register to selectively designate participating agents for such operations as barriers, multicast, and reductions. The reconfigurable tree apparatus enables an agent to initiate a barrier, multicast, or reduction operation, leaving software to determine the participating agents for each operation. Although the reconfigurable tree apparatus is implemented using a small number of wires, multiple in-flight barrier, multicast, and reduction operations can take place. The method and apparatus have low complexity, easy reconfigurability, and provide the energy savings necessary for future exa-scale machines.

    摘要翻译： 公开了具有旁路模式的可重构树装置和使用可重构树装置的方法。 可重构树装置使用短路寄存器来选择性地指定用于诸如屏障，多播和减少的操作的参与代理。 可重构树装置使得代理能够启动屏障，多播或缩减操作，使软件确定每个操作的参与代理。 虽然使用少量的线路来实现可重构树设备，但是可以进行多个飞行中的屏障，多播和减少操作。 该方法和装置具有复杂性低，易于重新配置，并为未来的规模化机器提供所需的能量节省。

    DIGITAL SIGNATURE COLLECTION AND AUTHENTICATION
    59.
    发明申请
    DIGITAL SIGNATURE COLLECTION AND AUTHENTICATION 有权
    数字签名收集和认证

    公开(公告)号：US20140010453A1

    公开(公告)日：2014-01-09

    申请号：US14021304

    申请日：2013-09-09

    申请人： Jianping Xu

    发明人： Jianping Xu

    IPC分类号： G06K9/00

    CPC分类号： G06K9/00167 ,  G06F3/0346 ,  G06F3/03545 ,  G06F3/043 ,  G06K9/00154 ,  G07C9/0015

    摘要： A digital signature collection and authentication system includes an ink pen having an ultrasonic transmitter that transmits ultrasonic energy to a plurality of ultrasonic receivers. A computer triangulates the location of the pen versus time to generate the signature shape, and to generate velocity and acceleration data. The pen also includes a pressure sensitive tip to record pressure applied to the pen tip. The pen also includes a higher frequency burst transmitter useful to generate a time reference, and to transmit the pressure information. The computer packetizes the shape, velocity, acceleration, and pressure data with a time stamp and an IP address or phone number, encrypts the packet and sends it to a host computer for authentication. Other embodiments are described and claimed.

    摘要翻译： 数字签名收集和认证系统包括具有向超声波接收器发送超声波能量的超声波发射器的墨水笔。 计算机将笔的位置与时间进行三角测量以生成签名形状，并生成速度和加速度数据。 该笔还包括压力敏感的尖端以记录施加到笔尖的压力。 该笔还包括用于产生时间基准的较高频率脉冲串发射器，以及传送压力信息。 计算机使用时间戳和IP地址或电话号码对形状，速度，加速度和压力数据进行打包，对数据包进行加密，并将其发送到主机进行认证。 描述和要求保护其他实施例。

    Digital signature collection and authentication
    60.
    发明授权
    Digital signature collection and authentication 有权

    公开(公告)号：US08537141B2

    公开(公告)日：2013-09-17

    申请号：US11766086

    申请日：2007-06-20

    申请人： Jianping Xu

    发明人： Jianping Xu

    IPC分类号： G06F3/033

    CPC分类号： G06K9/00167 ,  G06F3/0346 ,  G06F3/03545 ,  G06F3/043 ,  G06K9/00154 ,  G07C9/0015

    摘要： A digital signature collection and authentication system includes an ink pen having an ultrasonic transmitter that transmits ultrasonic energy to a plurality of ultrasonic receivers. A computer triangulates the location of the pen versus time to generate the signature shape, and to generate velocity and acceleration data. The pen also includes a pressure sensitive tip to record pressure applied to the pen tip. The pen also includes a higher frequency burst transmitter useful to generate a time reference, and to transmit the pressure information. The computer packetizes the shape, velocity, acceleration, and pressure data with a time stamp and an IP address or phone number, encrypts the packet and sends it to a host computer for authentication.