Silicon and silicon/germanium light-emitting device, methods and systems
    5.
    发明授权
    Silicon and silicon/germanium light-emitting device, methods and systems 有权
    硅和硅/锗发光器件,方法和系统

    公开(公告)号:US07169631B2

    公开(公告)日:2007-01-30

    申请号:US11195203

    申请日:2005-08-02

    IPC分类号: H01L21/66

    摘要: A light-emitting device and optical communication system based on the light-emitting device is disclosed. The light-emitting device is formed in a float-zone substrate. The light-emitting device includes on the substrate lower surface a reflective layer and on the upper surface spaced apart doped regions. The portion of the upper surface between the doped regions is textured and optionally covered with an antireflection coating to enhance light emission. The light-emitting device can operate as a laser or as a light-emitting diode, depending on the reflectivities of the antireflection coating and the reflective layer.

    摘要翻译: 公开了一种基于发光装置的发光装置和光通信系统。 发光装置形成在浮区衬底中。 发光装置在基板下表面上包括反射层,并且在上表面上包括间隔开的掺杂区域。 掺杂区域之间的上表面的部分被纹理化并且任选地被抗反射涂层覆盖以增强发光。 取决于抗反射涂层和反射层的反射率,发光器件可以作为激光器或发光二极管工作。

    Laser driver for high speed short distance links
    6.
    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
    7.
    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
    8.
    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
    9.
    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
    10.
    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。