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    Delay interpolation in a ring oscillator delay stage
    41.
    发明申请
    Delay interpolation in a ring oscillator delay stage 有权
    延迟内插在环形振荡器延迟阶段

    公开(公告)号：US20060071722A1

    公开(公告)日：2006-04-06

    申请号：US10953023

    申请日：2004-09-29

    Applicant: Fabrice Paillet ,  David Rennie ,  Tanay Karnik ,  Jianping Xu

    Inventor： Fabrice Paillet ,  David Rennie ,  Tanay Karnik ,  Jianping Xu

    IPC: H03K3/03

    CPC classification number: H03K3/0322

    Abstract: 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.

    Abstract translation: 根据一些实施例，电路包括环形振荡器的延迟级。 延迟级可以包括第一差分对，第二差分对和第三差分对。 第一差分对可以耦合到第一电流转向电路，接收差分输入信号，并输出第一差分信号。 第二差分对可以接收差分输入信号并输出​​第二差分信号，并且第三差分对可以耦合到第二电流导向电路，从第二差分对接收第二差分信号，并输出第一差分信号 。 差分输入信号和第一差分信号之间的延迟量是基于由第一电流转向电路和第二电流转向电路转向的电流的相对量。

    Programmable high-resolution timing jitter injectors
    42.
    发明申请
    Programmable high-resolution timing jitter injectors 有权
    可编程高分辨率定时抖动注入器

    公开(公告)号：US20060061399A1

    公开(公告)日：2006-03-23

    申请号：US10946709

    申请日：2004-09-22

    Applicant: Jianping Xu ,  KyeHyung Lee ,  Fabrice Paillet ,  David Rennie ,  Tanay Karnik

    Inventor： Jianping Xu ,  KyeHyung Lee ,  Fabrice Paillet ,  David Rennie ,  Tanay Karnik

    IPC: H03H11/26

    CPC classification number: H03K5/1504 ,  H03K5/133 ,  H03K2005/00058

    Abstract: A device includes a first circuit having rows and columns of delay cells to generate delayed signals based on an input signal. The delayed signals are selectable and have a different delay from one another with respect to the input signal. The device is programmable based on a delay code. Different values of the delay code allow the device to select different delayed signals. The device may select one of the delayed signals from the first circuit for use as a timing signal in a second circuit of the device. The device may also use the delayed signals from the first circuit to evaluate a clock and data recovery circuit. In an embodiment, the circuits may be located on a single die.

    Abstract translation: 一种装置包括具有行和列的延迟单元的第一电路，以基于输入信号产生延迟信号。 延迟信号是可选择的并且相对于输入信号具有彼此不同的延迟。 该设备可以基于延迟码进行编程。 延迟码的不同值允许设备选择不同的延迟信号。 设备可以选择来自第一电路的延迟信号之一用作设备的第二电路中的定时信号。 该装置还可以使用来自第一电路的延迟信号来评估时钟和数据恢复电路。 在一个实施例中，电路可以位于单个管芯上。

    Interpolation delay cell for 2ps resolution jitter injector in optical link transceiver
    45.
    发明申请
    Interpolation delay cell for 2ps resolution jitter injector in optical link transceiver 失效
    用于光链路收发器中2ps分辨率抖动注入器的插值延迟单元

    公开(公告)号：US20050140412A1

    公开(公告)日：2005-06-30

    申请号：US10748300

    申请日：2003-12-31

    Applicant: KyeHyung Lee ,  Jianping Xu ,  Fabrice Paillet ,  Tanay Karnik

    Inventor： KyeHyung Lee ,  Jianping Xu ,  Fabrice Paillet ,  Tanay Karnik

    IPC: H03F1/26 ,  H03F3/45 ,  H03H11/26

    CPC classification number: H03H11/265 ,  H03F1/26 ,  H03F3/45183 ,  H03F3/45475 ,  H03F2200/372

    Abstract: An apparatus and method for generating signals with improved timing resolution includes a delay cell configured to receive dual coupled differential input signals. The delay cell performs an interpolation function which smooths state transitions or other discontinuities that result from timing or phase offsets between the input signals. The interpolation function is performed by resistors which couple respective components of the differential inputs prior to traversing delay paths. A delay cell of this type has high supply noise rejection and a low output swing range, thereby making it suitable for a number of applications. One application includes a jitter noise generator which uses the delay cell to achieve improved timing resolution and which is not limited by a minimum delay of the cell. Another application uses the delay cell to form a coupled delay line.

    Abstract translation: 用于产生具有改进的定时分辨率的信号的装置和方法包括被配置为接收双耦合差分输入信号的延迟单元。 延迟单元执行内插函数，其平滑由输入信号之间的定时或相位偏移导致的状态转换或其他不连续性。 内插函数由在穿过延迟路径之前耦合差分输入的各个分量的电阻器来执行。 这种延迟单元具有高的电源噪声抑制和低的输出摆​​幅范围，从而使其适用于多种应用。 一个应用包括抖动噪声发生器，其使用延迟单元来实现改进的定时分辨率，并且不受单元的最小延迟的限制。 另一应用使用延迟单元来形成耦合的延迟线。

    Wireless display systems, styli, and associated methods
    46.
    发明授权
    Wireless display systems, styli, and associated methods 有权
    无线显示系统，测针和相关方法

    公开(公告)号：US06717073B2

    公开(公告)日：2004-04-06

    申请号：US09751048

    申请日：2000-12-29

    Applicant: Jianping Xu ,  Stephen H. Hunt

    Inventor： Jianping Xu ,  Stephen H. Hunt

    IPC: G06K1106

    CPC classification number: G06F3/0433 ,  G06F3/03545

    Abstract: A wireless coordinate input system for a display system includes a stylus that transmits ultrasonic energy to a plurality of ultrasonic receiving stations in a projection plane. The stylus may include one ultrasonic transmitter used for determination of three-dimensional coordinates of the stylus relative to the projection plane. The stylus may also include a second ultrasonic transmitter controlled by a pressure-activated switch. When the stylus is pressed against the projection plane, the second transmitter turns on and is used for determination of two-dimensional coordinates of the stylus in the projection plane. The stylus may also include a higher frequency burst transmitter used to generate a time reference. One or more of the ultrasonic receiving stations may also include an ultrasonic transmitter for calibration.

    Abstract translation: 用于显示系统的无线坐标输入系统包括将超声波能量发送到投影平面中的多个超声波接收站的触笔。 触笔可以包括用于确定触控笔相对于投影平面的三维坐标的一个超声发射器。 触针还可以包括由压力启动开关控制的第二超声波发射器。 当触控笔被按压在投影平面上时，第二个发射器接通并用于确定投影平面中触针的二维坐标。 触笔还可以包括用于产生时间参考的更高频率的串行发射机。 一个或多个超声波接收站还可以包括用于校准的超声波发射器。

    Carrier with stair climbing aid and stair climbing aid for a carrier
    48.
    发明授权
    Carrier with stair climbing aid and stair climbing aid for a carrier 有权

    公开(公告)号：US09630641B2

    公开(公告)日：2017-04-25

    申请号：US14275972

    申请日：2014-05-13

    Applicant: Jordan Jianping Xu

    Inventor： Jordan Jianping Xu

    IPC: B62B5/02

    CPC classification number: B62B5/025

    Abstract: A carrier with a stair climbing aid includes a carrier including a top surface, a bottom surface, and a front surface and a rear surface between the top surface and the bottom surface, at least one guide bar attached to the rear surface, the guide bar having a first end disposed proximate a corner between the bottom surface and the rear surface and a second end at least as high as stair risers of stairs expected to be climbed, at least one elongated member movably attached to the guide bar, and an arrangement for urging a top end of the elongated, member toward the second end of the guide bar.

    System and Method for Charging of Battery
    50.
    发明申请
    System and Method for Charging of Battery 审中-公开
    电池充电系统及方法

    公开(公告)号：US20130099726A1

    公开(公告)日：2013-04-25

    申请号：US13280934

    申请日：2011-10-25

    Applicant: Tao Zhang ,  Jingbo Ke ,  Shungang Xu ,  Shaolan Wang ,  Jianping Xu

    Inventor： Tao Zhang ,  Jingbo Ke ,  Shungang Xu ,  Shaolan Wang ,  Jianping Xu

    IPC: H02J7/00

    CPC classification number: H01M10/44 ,  H01M10/448 ,  H02J7/0016 ,  H02J7/041 ,  Y02B40/90

    Abstract: A battery charging system for charging a battery with a plurality of battery cells. The battery charging system includes a battery charger and a battery management unit. The battery management unit includes a plurality of balancing circuits for controlling charging of each battery cell. The battery charging system can charge the battery in different stages depending on the voltage of each battery cell.

    Abstract translation: 一种用于对具有多个电池单体的电池进行充电的电池充电系统。 电池充电系统包括电池充电器和电池管理单元。 电池管理单元包括用于控制每个电池单元的充电的多个平衡电路。 电池充电系统可以根据每个电池单元的电压对电池进行不同阶段的充电。

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