Method and system for encoding optical communication information during automatic laser shutdown restart sequence
    1.
    发明授权
    Method and system for encoding optical communication information during automatic laser shutdown restart sequence 失效
    自动激光关机重启序列期间编码光通信信息的方法和系统

    公开(公告)号:US06922531B2

    公开(公告)日:2005-07-26

    申请号:US10102790

    申请日:2002-03-21

    申请人: Paul A. Smeulders

    发明人: Paul A. Smeulders

    IPC分类号: H04B10/02 H04B10/08 H04B10/00

    CPC分类号: H04B10/0799 H04B2210/08

    摘要: A system and method for identifying one or more characteristics of an optical signal, in which a transmitter is operable to transmit an optical signal and a receiving unit is operable to receive the optical signal. The transmitter has a laser for generating the optical signal and an encoding unit adapted to control the laser to activate and deactivate the optical signal during a laser shutdown state based on a predetermined code. The receiving unit has an optical receiver optically coupled to the transmitter by a light transmission medium and is operable to receive the optical signal from the transmitter. The receiving unit also has a decoder measuring at least one of an active time of the optical signal and the inactive time between active times of the optical signal. The decoder determines at least one of the one or more characteristics of the optical system based on at least one of the active time or the inactive time.

    摘要翻译: 一种用于识别光信号的一个或多个特性的系统和方法,其中发射机可操作以发射光信号和接收单元可操作以接收光信号。 发射器具有用于产生光信号的激光器和编码单元,其适于在基于预定码的激光关闭状态期间控制激光器激活和去激活光信号。 接收单元具有通过光传输介质光耦合到发射机的光接收器,并且可操作以从发射机接收光信号。 接收单元还具有测量光信号的有效时间和光信号的有效时间之间的不活动时间中的至少一个的解码器。 解码器基于活动时间或非活动时间中的至少一个来确定光学系统的一个或多个特性中的至少一个。

    Mapping arbitrary signals
    2.
    发明授权
    Mapping arbitrary signals 有权
    映射任意信号

    公开(公告)号:US07257117B2

    公开(公告)日:2007-08-14

    申请号:US10124235

    申请日:2002-04-18

    IPC分类号: H04L12/56

    CPC分类号: H04J3/1629 H04J3/1611

    摘要: A synchronizer/de-synchronizer maps continuous format signals of an arbitrary rate into frames of pre-selected single common rate, such as SONET frames, with no bits changed and very little jitter or wander added. In this way, the continuous format signal may be carried transparently as a tributary of a SONET network. Each frame comprises a definite number of fixed stuff bits, including transport overhead bits and reminder fixed stuff bits. A frame also comprises an adjustable number of adaptive stuff bits, resulting from the phase difference between the arbitrary rate and the common rate. A mapping function is performed in a tributary unit shelf of a SONET transport shelf, and the reverse mapping function is performed in a similar way at the far end of a SONET connection. The stuff bits are spread uniformly within the frame.

    摘要翻译: 同步器/去同步器将任意速率的连续格式信号映射到预先选择的单个公共速率的帧,例如SONET帧,而不改变位,并且添加非常小的抖动或漂移。 以这种方式,连续格式信号可以作为SONET网络的支路透明地携带。 每个帧包括一定数量的固定填充位,包括传输开销位和提醒固定填充位。 帧还包括可调数量的自适应填充位,由任意速率和公共速率之间的相位差产生。 在SONET传输架的支路单元架中执行映射功能,并且以类似的方式在SONET连接的远端执行反向映射功能。 填充位在帧内均匀分布。

    Method and device for providing priority access to a shared access network
    3.
    发明授权
    Method and device for providing priority access to a shared access network 失效
    用于提供对共享接入网络的优先访问的方法和设备

    公开(公告)号:US06741559B1

    公开(公告)日:2004-05-25

    申请号:US09471136

    申请日:1999-12-23

    IPC分类号: H04J314

    摘要: An interface that provides priority access to a network is disclosed. The interface includes several ports. Preferably the ports are Ethernet compliant ports. At least one of the ports transmits high priority frames in advance of lower priority frames. High priority frames are preferably buffered. Buffered high priority frames pre-empt transmission of lower priority frames at the port. If the port is operating half duplex using CSMA/CD, transmission of high priority frames pre-empts re-transmission of lower priority frames for which a collision has been detected. Additionally, in the case of frames to be broadcast to multiple ports, buffered frames may be transmitted at varying times at the ports at which the frame is to be broadcast. The interface may further buffer frames received at each port. As the buffer fills, flow of frames into the interface is preferably limited on a per-port basis, based on the number of frames already buffered for a particular port. The interface is particularly well suited for providing priority access to a shared access network to a high priority appliance such as an Ethernet phone. As such the interface may be integrated with such a phone.

    摘要翻译: 公开了提供对网络的优先访问的接口。 该接口包括几个端口。 端口最好是符合以太网的端口。 至少一个端口在较低优先级帧之前发送高优先级帧。 高优先级帧优选地被缓冲。 缓冲的高优先级帧优先在端口传输较低优先级的帧。 如果端口使用CSMA / CD进行半双工,则高优先级帧的传输将优先重新发送检测到冲突的较低优先级帧。 此外,在要广播到多个端口的帧的情况下,缓冲帧可以在帧将被广播的端口处以变化的时间发送。 该接口可以进一步缓冲在每个端口处接收到的帧。 当缓冲器填充时,优选地基于已经为特定端口缓冲的帧的数量在每个端口的基础上限制帧到接口中的流。 该接口特别适合于向诸如以太网电话的高优先级设备提供对共享接入网络的优先访问。 因此,接口可以与这样的电话集成。