Pseudorandom noise sequence generator
    4.
    发明授权
    Pseudorandom noise sequence generator 失效
    伪随机噪声序列发生器

    公开(公告)号:US06201870B1

    公开(公告)日:2001-03-13

    申请号:US09036234

    申请日:1998-03-06

    IPC分类号: H04L900

    CPC分类号: H04L9/0668

    摘要: A pseudorandom sequence generator including a first feedback shift register having at least one input and at least one output and a first controller having an output in communication with the at least one input of the first feedback shift register; the first feedback shift register operating at a first speed S1 and the first controller operating at a second speed S2. In one embodiment the first speed S1 of the first feedback shift register is an integer multiple of the second speed S2 of the first controller. In another embodiment the first feedback shift register includes a shift register having an input, an output, and at least one tap; and a feedback function generator having a first input in communication with the at least one tap of the shift register, a second input in communication with the output of the first controller, and an output in communication with the input of the shift register; the feedback function generator includes at least one feedback function.

    摘要翻译: 一种伪随机序列发生器,包括具有至少一个输入和至少一个输出的第一反馈移位寄存器和具有与第一反馈移位寄存器的至少一个输入通信的输出的第一控制器; 第一反馈移位寄存器以第一速度S1操作,第一控制器以第二速度S2操作。 在一个实施例中,第一反馈移位寄存器的第一速度S1是第一控制器的第二速度S2的整数倍。 在另一实施例中,第一反馈移位寄存器包括具有输入,输出和至少一个抽头的移位寄存器; 以及反馈函数发生器,其具有与所述移位寄存器的所述至少一个抽头通信的第一输入,与所述第一控制器的输出通信的第二输入以及与所述移位寄存器的输入通信的输出; 所述反馈函数发生器包括至少一个反馈函数。

    Optical bit rate converter
    5.
    发明授权
    Optical bit rate converter 失效
    光比特率转换器

    公开(公告)号:US06175433B1

    公开(公告)日:2001-01-16

    申请号:US08877339

    申请日:1997-06-17

    IPC分类号: H04J1408

    CPC分类号: H04J14/08 H04Q11/0003

    摘要: An optical bit rate for communication systems. The optical bit rate converter converts an ultra-high speed optical data stream to a lower rate optical data stream. In one embodiment, the optical bit rate converter converts the ultra-high speed optical data stream to a lower rate optical data stream that can be detected and processed electronically. The optical rate converter includes a buffer presenting a repeating optical data bit pattern, an optical sampler presenting an optical sampling bit stream, and an optical correlator. The optical correlator has a first input in communication with the output of the buffer and a second input in communication with the output of the optical sampler. The optical correlator produces a rate-converted optical data bit stream at its output in response to the repeating optical data bit pattern produced by the buffer and the optical sampling bit stream produced by the optical sampler. In one embodiment, the buffer has a data input and stores an optical data bit stream received from a high speed optical data source. In another embodiment, the optical bit rate converter time dilates the repeating optical data bit pattern received from the buffer. In yet another embodiment, the optical bit rate converter demultiplexes the repeating optical data bit pattern received from the buffer. The invention also relates to a method for rate-converting an ultra-high speed optical data stream to a lower rate optical data stream.

    摘要翻译: 通信系统的光比特率。 光比特率转换器将超高速光数据流转换成较低速率的光数据流。 在一个实施例中,光比特率转换器将超高速光数据流转换成可以电子检测和处理的较低速光学数据流。 光速率转换器包括呈现重复光数据位模式的缓冲器,呈现光采样位流的光采样器和光相关器。 光学相关器具有与缓冲器的输出通信的第一输入和与光学采样器的输出通信的第二输入。 光相关器响应于由缓冲器产生的重复光数据位模式和由光采样器产生的光采样位流,在其输出端产生速率转换的光数据比特流。 在一个实施例中,缓冲器具有数据输入并存储从高速光学数据源接收的光学数据比特流。 在另一实施例中,光比特率转换器时间扩大从缓冲器接收的重复光数据位模式。 在另一个实施例中,光比特率转换器解复用从缓冲器接收的重复光数据位模式。 本发明还涉及一种用于将超高速光数据流速率转换为较低速光学数据流的方法。

    Multiple access protocol system and related techniques for multi-gigabit optical wavelength division multiplexed local area networks
    7.
    发明授权
    Multiple access protocol system and related techniques for multi-gigabit optical wavelength division multiplexed local area networks 有权
    用于多千兆位光波分复用局域网的多址协议系统及相关技术

    公开(公告)号:US07646979B1

    公开(公告)日:2010-01-12

    申请号:US09994475

    申请日:2001-11-26

    IPC分类号: H04J14/02 H04J14/08

    摘要: A system for simultaneously transmitting and receiving multiple data messages on a unidirectional ring having a plurality of nodes coupled thereto is described. This technique utilizes a medium access (MAC) protocol for a multi-gigabit-per-second local-area optical wavelength division multiplexed (WDM) network that is particularly well suited for high-performance computing environments that need a network that provides quality of service and the ability to enforce service level agreements. The protocol uses an asynchronous, unslotted, tokenless, and collision-free access scheme that is arbitrated by a centralized scheduler. The embodiment is based on a folded-bus unidirectional ring that is passively optically tapped by the nodes to both transmit data onto the network and to receive data from the network. The system includes a scheduler based on a master/slave protocol that provisions and regulates data flow on the network, and uses a dedicated out-of-band control wavelength to broadcast scheduler directives to the nodes in the network.

    摘要翻译: 描述了在具有耦合到其上的多个节点的单向环上同时发送和接收多个数据消息的系统。 该技术利用媒体接入(MAC)协议用于每千兆位每秒的本地光波分复用(WDM)网络,其特别适用于需要提供服务质量的网络的高性能计算环境 以及执行服务级别协议的能力。 该协议使用由集中式调度程序仲裁的异步,非限制,无令牌和无冲突的访问方案。 该实施例基于折叠总线单向环,其被节点被动地光学抽头以将数据传输到网络上并从网络接收数据。 该系统包括基于主/从协议的调度器,其提供和调节网络上的数据流,并且使用专用的带外控制波长来向网络中的节点广播调度器指令。

    Rational-harmonic apparatus and technique
    8.
    发明授权
    Rational-harmonic apparatus and technique 失效
    合理谐波装置和技术

    公开(公告)号:US5828682A

    公开(公告)日:1998-10-27

    申请号:US779807

    申请日:1997-01-08

    申请人: John D. Moores

    发明人: John D. Moores

    摘要: A modulated cavity including a cavity; a modulation source; and a modulator located with said cavity and in electrical communication with said modulation source. The modulation source overdrives the modulator with a period of modulation T.sub.mod substantially equal to T.sub.roundtrip (n+(p/q)).sup.-1. n, p, and q are integers. T.sub.roundtrip is the period of a pulse making one round-trip in the cavity. In one embodiment of the invention p and q are relatively prime. In another embodiment of the invention the optical response of the modulator includes the qth harmonic of (1/T.sub.mod). In yet another embodiment of the invention p/q is an integer. In still yet another embodiment of the invention p/q is a rational number.

    摘要翻译: 包括空腔的调制腔; 调制源 以及位于所述腔并与所述调制源电连通的调制器。 调制源以大约等于Troundtrip(n +(p / q))-1的调制周期Tmod过驱动调制器。 n,p和q是整数。 Troundtrip是在空腔中进行一次往返的脉冲的周期。 在本发明的一个实施方案中,p和q是相同的。 在本发明的另一个实施例中,调制器的光响应包括(1 / Tmod)的第q次谐波。 在本发明的另一个实施方案中,p / q是整数。 在本发明的另一个实施例中,p / q是有理数。

    RECYCLED LIGHT INTERFEROMETRIC FIBER OPTIC GYROSCOPE
    9.
    发明申请
    RECYCLED LIGHT INTERFEROMETRIC FIBER OPTIC GYROSCOPE 审中-公开
    再循环光纤光纤光栅

    公开(公告)号:US20120307252A1

    公开(公告)日:2012-12-06

    申请号:US13307534

    申请日:2011-11-30

    IPC分类号: G01C19/72

    CPC分类号: G01C19/721

    摘要: Interferometric fiber optic gyroscope. The gyroscope includes a pulsed light source for generating light pulses and a sense coil for receiving and trapping the light pulses travelling in clockwise and counter clockwise directions for a selected number of times around the sense coil. A detector receives the counter propagating light pulses to determine the phase shift between the two counter propagating light pulses, the phase shift being proportional to rotation rate of the sense coil.

    摘要翻译: 干涉光纤陀螺仪。 陀螺仪包括用于产生光脉冲的脉冲光源和用于接收并捕获在顺时针和逆时针方向上行进的光脉冲在感测线圈周围选定次数的感测线圈。 检测器接收反向传播光脉冲以确定两个反向传播光脉冲之间的相移,相移与感测线圈的旋转速率成比例。