Laser driver for high speed short distance links
    1.
    发明授权
    Laser driver for high speed short distance links 有权
    用于高速短距离连接的激光驱动器

    公开(公告)号:US07505497B2

    公开(公告)日:2009-03-17

    申请号:US10816321

    申请日:2004-03-31

    IPC分类号: H01S3/00

    摘要: One embodiment of a laser driver for high speed interconnections includes a buffered level shifter to shift the input voltage level to an appropriate level. In some embodiments the buffered level shifter may be tuned to provide a desired level shift with impedance matched to the driving load. Another embodiment converts a digital signal to a current train of a bias mode to represent logical zero and of a modulation mode to represent logical one, wherein one or both of the bias mode and modulation mode may be adjusted, for example by a programmable control circuit or by an adaptive control circuit. Some embodiments also provide circuitry for reducing overshoot of the output signal.

    摘要翻译: 用于高速互连的激光驱动器的一个实施例包括用于将输入电压电平转换到适当电平的缓冲电平移位器。 在一些实施例中,缓冲电平移位器可以被调谐以提供具有与驱动负载匹配的阻抗的期望电平移位。 另一个实施例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,其中偏置模式和调制模式中的一个或两个可以例如由可编程控制电路 或通过自适应控制电路。 一些实施例还提供用于减少输出信号的过冲的电路。

    Programmable high-resolution timing jitter injectors high-resolution timing jitter injectors
    2.
    发明授权
    Programmable high-resolution timing jitter injectors high-resolution timing jitter injectors 有权
    可编程高分辨率定时抖动注入器高分辨率定时抖动注入器

    公开(公告)号:US07348821B2

    公开(公告)日:2008-03-25

    申请号:US10946709

    申请日:2004-09-22

    IPC分类号: H03H11/26

    摘要: 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.

    摘要翻译: 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。

    DIGITAL SIGNATURE COLLECTION AND AUTHENTICATION
    3.
    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:US20070242059A1

    公开(公告)日:2007-10-18

    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

    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.

    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。

    0th droop detector architecture and implementation
    4.
    发明申请
    0th droop detector architecture and implementation 有权
    第0个下垂检测器架构和实现

    公开(公告)号:US20070013414A1

    公开(公告)日:2007-01-18

    申请号:US11172250

    申请日:2005-06-30

    IPC分类号: H03K5/00

    CPC分类号: H03K19/00346

    摘要: A voltage droop detector captures the very high-frequency noise on the power grid of a load, such as a microprocessor. The droop detector includes twin circuits, one of which receives the voltage from the power grid of the load, the other of which receives a filtered voltage. A 0th droop, as well as 1st droops, 2nd droops, and so on, are captured and stored for subsequent analysis. The circuits sample the voltages frequently enough to ensure that all droop events are captured. Other embodiments are described and claimed.

    摘要翻译: 电压下降检测器捕获诸如微处理器的负载的电网上的非常高频噪声。 下垂检测器包括双电路,其中一个接收来自负载的电网的电压,另一个接收经滤波的电压。 捕获并存储第0次下垂以及1次下垂,2次下垂等,以便后续分析。 电路频繁地对电压进行采样,以确保捕获所有下垂事件。 描述和要求保护其他实施例。

    Oscillator delay stage with active inductor
    5.
    发明授权
    Oscillator delay stage with active inductor 失效
    具有有源电感的振荡器延迟级

    公开(公告)号:US07161439B2

    公开(公告)日:2007-01-09

    申请号:US10991976

    申请日:2004-11-18

    IPC分类号: H03B5/20

    摘要: According to some embodiments, a circuit includes a ring oscillator delay stage. The delay stage may include a first transistor, a second transistor, and an active inductor. A gate of the first transistor may receive a first input signal, a gate of the second transistor may receive a second input signal, a source of the second transistor may be coupled to a source of the first transistor, and the active inductor may be coupled to a drain of the first transistor.

    摘要翻译: 根据一些实施例,电路包括环形振荡器延迟级。 延迟级可以包括第一晶体管,第二晶体管和有源电感器。 第一晶体管的栅极可以接收第一输入信号,第二晶体管的栅极可以接收第二输入信号,第二晶体管的源极可以耦合到第一晶体管的源极,并且有源电感器可以耦合 到第一晶体管的漏极。

    Clock and data recovery circuit
    6.
    发明申请
    Clock and data recovery circuit 审中-公开
    时钟和数据恢复电路

    公开(公告)号:US20060067452A1

    公开(公告)日:2006-03-30

    申请号:US10948697

    申请日:2004-09-24

    IPC分类号: H03D3/24

    摘要: A clock and data recovery circuit is provided that includes a phase/frequency detector to receive input data and multiphase clock signals. The phase/frequency detector including a first set of flip-flop circuits each to sample the input data at one of the multiphase clock signals and each to output a sampled data, and a second set of flip-flop circuits to retime the sampled data based on a similar clock signal applied to each of the second set of flip-flop circuits.

    摘要翻译: 提供了一种时钟和数据恢复电路,其包括用于接收输入数据和多相时钟信号的相位/频率检测器。 相位/频率检测器包括第一组触发器电路,每个触发器电路各自以多相时钟信号中的一个采样输入数据,并且每个触发器电路各自输出采样数据;以及第二组触发器电路,用于基于采样数据进行加权 在施加到每个第二组触发器电路的类似时钟信号上。

    High-speed data sampler for optical interconnect
    8.
    发明申请
    High-speed data sampler for optical interconnect 有权
    用于光互连的高速数据采样器

    公开(公告)号:US20050069070A1

    公开(公告)日:2005-03-31

    申请号:US10673218

    申请日:2003-09-30

    IPC分类号: H03L7/081 H04L7/00

    摘要: A system and method for sampling a data stream generates a number of clock signals having equally spaced phases and then samples a data stream using the clock signals. The clock phases are preferably based on a predetermined fraction of a data rate frequency of the data stream, and sampling is performed based on predetermined combinations of the clock signals. While the system and method is suitable for sampling data transmitted for a wide variety of data rates, the system and method is especially well-suited to sampling at data transmitted at high rates, for example, equal to or greater than 20 Gb/s.

    摘要翻译: 用于对数据流进行采样的系统和方法产生具有相等间隔相位的多个时钟信号,然后使用时钟信号对数据流进行采样。 时钟相位优选地基于数据流的数据速率频率的预定分数,并且基于时钟信号的预定组合来执行采样。 虽然系统和方法适合于为各种数据速率传输的数据采样,但是该系统和方法特别适合于以高速率传输的数据进行采样,例如等于或大于20Gb / s。

    Process for hydrogenation of isoalpha acids
    9.
    发明授权
    Process for hydrogenation of isoalpha acids 有权
    异磷酸氢化方法

    公开(公告)号:US06198004B1

    公开(公告)日:2001-03-06

    申请号:US09329299

    申请日:1999-06-10

    IPC分类号: C07C4567

    摘要: The invention relates to a process for converting alpha acid and isoalpha acids to tetrahydroisoalpha acid. The process comprises isomerizing an alpha acid to produce isoalpha acid and hydrogenating the isoalpha acid in the presence of a noble metal catalyst wherein, the noble metal catalyst is added incrementally or continuously throughout the hydrogenation step. The invention also relates to tetrahydroisoalpha acids made by the above process.

    摘要翻译: 本发明涉及将α-酸和异α-酸转化为四氢异α酸的方法。 该方法包括异构化α酸以产生异α酸并在贵金属催化剂存在下氢化异α酸,其中贵金属催化剂在整个氢化步骤中逐渐或连续地加入。 本发明还涉及通过上述方法制备的四氢异构酸。