Enhanced port activity monitor for an integrated multiport repeater
    41.
    发明授权
    Enhanced port activity monitor for an integrated multiport repeater 失效
    增强的端口活动监视器,用于集成多端口转发器

    公开(公告)号:US5459714A

    公开(公告)日:1995-10-17

    申请号:US21008

    申请日:1993-02-22

    摘要: A system is provided on an Integrated Multiport Repeater (IMR) to monitor the activity of the IMR when the repeater is in minimum mode. Through this system the serial output pin outputs status based upon inputs at two input pin the signal in and the clock signal. In a preferred embodiment there are four different status outputs, partition, loopback/link, Bitrate and SQE/Polarity. This system finds use in low end applications where complex control circuitry is not desired.

    摘要翻译: 在集成多端口中继器(IMR)上提供一个系统,用于在中继器处于最小模式时监视IMR的活动。 通过该系统,串行输出引脚基于两个输入引脚输入信号输入和时钟信号的状态。 在优选实施例中,存在四种不同的状态输出,分区,环回/链路,比特率和SQE /极性。 该系统适用于不需要复杂控制电路的低端应用。

    Address tracking over repeater based networks
    42.
    发明授权
    Address tracking over repeater based networks 失效
    基于中继器网络的地址跟踪

    公开(公告)号:US5414694A

    公开(公告)日:1995-05-09

    申请号:US19926

    申请日:1993-02-19

    CPC分类号: H04L12/4625 H04L12/46

    摘要: A system is provided for use in a network to provide authentication of packets of data, provide security to ensure the prevention of unauthorized receipt of data, to provide improved monitoring of the packets of data transmitted and received over such a network, and to detect changes in the network topology. Repeaters utilized in the network are provided with the capability to detect and interpret packet data and the source address (SA) and destination address (DA) fields to provide the improved features.

    摘要翻译: 提供一种在网络中使用的系统来提供数据分组的认证,提供安全性以确保防止未经授权的数据接收,提供对通过这样的网络发送和接收的数据分组的改进的监视,以及检测变化 在网络拓扑中。 在网络中使用的中继器具有检测和解释分组数据和源地址(SA)和目的地址(DA)字段以提供改进的特征的能力。

    Multi-rate media independent interface over a physical coding sublayer
    43.
    发明授权
    Multi-rate media independent interface over a physical coding sublayer 有权
    物理编码子层上的多速率媒体独立接口

    公开(公告)号:US08873579B1

    公开(公告)日:2014-10-28

    申请号:US13591974

    申请日:2012-08-22

    IPC分类号: H04W4/00 H04L12/28 H04J3/18

    摘要: A method for inserting ordered sets into a data stream converted from a first rate to a second rate NA times greater than the first rate, while conforming to a requirement that symbols be arranged in units of symbol length M, includes receiving, at the first rate, a data packet containing data symbols, receiving Y1 symbols of control information, and identifying an ordered set based on the Y1 symbols. The method also includes generating NA repetitions of each data symbol of the data packet, determining whether Y1*NA/M has a non-zero remainder, and, at least partially in response to determining that Y1*NA/M has a non-zero remainder, generating a number of repetitions of the ordered set containing either more or fewer than Y1*NA symbols. The method also includes outputting, at the second rate, the data symbol repetitions and first ordered set repetitions.

    摘要翻译: 一种用于将顺序集合插入到从第一速率转换成大于第一速率NA的第二速率的数据流的方法,同时符合符号以符号长度M为单位排列的要求,包括以第一速率接收 包含数据符号的数据分组,接收控制信息的Y1个符号,以及基于Y1符号识别有序集合。 该方法还包括产生数据分组的每个数据符号的NA重复,确定Y1 * NA / M是否具有非零余数,并且至少部分地响应于确定Y1 * NA / M具有非零 余数,产生包含多于或少于Y1 * NA符号的有序集合的重复次数。 该方法还包括以第二速率输出数据符号重复和首次设置重复。

    Adaptive speed control for MAC-PHY interfaces
    44.
    发明授权
    Adaptive speed control for MAC-PHY interfaces 有权
    MAC-PHY接口的自适应速度控制

    公开(公告)号:US08553720B2

    公开(公告)日:2013-10-08

    申请号:US11696476

    申请日:2007-04-04

    IPC分类号: H04J3/16 G01R31/08

    摘要: Apparatus having corresponding methods and computer programs comprise a first first-in first-out buffer (FIFO) to receive and store data from a media access controller (MAC); a physical-layer device (PHY) to transmit a signal representing the data; and a control circuit comprising a read circuit to transfer the data from the first FIFO to the PHY, and a transmit pause circuit to transmit a pause frame to the MAC when an amount of the data stored in the first FIFO exceeds a predetermined threshold.

    摘要翻译: 具有相应方法和计算机程序的装置包括从媒体接入控制器(MAC)接收和存储数据的第一先进先出缓冲器(FIFO) 用于发送表示数据的信号的物理层设备(PHY); 以及控制电路,包括用于将数据从第一FIFO传送到PHY的读取电路,以及发送暂停电路,用于当存储在第一FIFO中的数据量超过预定阈值时,向MAC发送暂停帧。

    Sub-symbol rate cable tester
    45.
    发明授权
    Sub-symbol rate cable tester 有权
    子符号速率电缆测试仪

    公开(公告)号:US08513952B2

    公开(公告)日:2013-08-20

    申请号:US12330751

    申请日:2008-12-09

    IPC分类号: G01R31/00

    摘要: Aspects of the present disclosure provide for a cable tester that tests a cable to determine the cable length. The cable tester can include a clock generator that generates a clock that has clock period that is a multiple of the data symbol period and a signal generator that injects the training signal, which can be synchronous with the clock, into the cable. The cable tester can also include a receiver that samples the returned signal from the cable and adaptively filters the returned signal based on the training signal and a controller that determines the cable length from the adaptive filter tap coefficients.

    摘要翻译: 本公开的方面提供了测试电缆以确定电缆长度的电缆测试器。 电缆测试器可以包括时钟发生器,其产生具有数据符号周期的倍数的时钟周期的时钟和将时钟同步的训练信号注入到电缆中的信号发生器。 电缆测试器还可以包括接收器,其对来自电缆的返回信号进行采样,并且基于训练信号自适应地过滤返回的信号,以及控制器,其根据自适应滤波器抽头系数确定电缆长度。

    8/10 and 64/66 aggregation
    46.
    发明授权
    8/10 and 64/66 aggregation 有权
    8/10和64/66聚合

    公开(公告)号:US08451869B1

    公开(公告)日:2013-05-28

    申请号:US13563342

    申请日:2012-07-31

    申请人: William Lo

    发明人: William Lo

    IPC分类号: H04J3/02

    摘要: A network device includes a substitutor and a transmitter. The substitutor receives input columns of concurrently received input symbols. Each of the input columns includes one input symbol from each of a plurality of parallel input lanes. The substitutor generates output columns corresponding to the input columns, wherein each of the output columns includes one output symbol for each of a plurality of parallel output lanes. The substitutor replaces the output symbols of a selected column of the output columns with alignment symbols. The selected column is immediately followed by a second column, and the second column is immediately followed by a third column. The substitutor replaces the output symbols of the second column with disposable symbols, and replaces the output symbols of the third column with boundary symbols. The transmitter drives data onto a communications medium in response to the output symbols generated by the substitutor module.

    摘要翻译: 网络设备包括替代者和发射机。 替代者接收同时接收的输入符号的输入列。 每个输入列包括来自多个并行输入通道中的每一个的一个输入符号。 替代者产生与输入列对应的输出列,其中每个输出列包括用于多个并行输出通道中的每一个的一个输出符号。 替换器使用对齐符号替换输出列的选定列的输出符号。 选定的列后面紧跟着第二列,第二列紧跟着第三列。 替换者用一次性符号替换第二列的输出符号,并用边界符号替换第三列的输出符号。 发射机响应于由替代模块产生的输出符号将数据驱动到通信介质上。

    Advanced time domain reflection cable testing
    47.
    发明授权
    Advanced time domain reflection cable testing 有权
    高级时域反射电缆测试

    公开(公告)号:US07960976B1

    公开(公告)日:2011-06-14

    申请号:US12723122

    申请日:2010-03-12

    申请人: William Lo

    发明人: William Lo

    IPC分类号: G01R31/11

    CPC分类号: G01R31/11 G01R31/021

    摘要: A cable testing system that tests cable includes a pulse generation module that transmits a first pulse on a first communications channel of the cable. A sampling module waits a predetermined time period after the pulse generation module transmits the first pulse and then detects a first amplitude of a reflected signal on a second communications channel of the cable. A time domain reflection (TDR) module receives the first amplitude and verifies proper operation of the cable based on the first amplitude. The predetermined time period corresponds with an estimated roundtrip propagation delay of the first pulse when the first pulse is reflected back to the cable testing system after traveling a first predetermined distance along the cable. The sampling module incrementally increases the predetermined time period during subsequent iterations of a cable test in order to verify proper operation of a predetermined segment of the cable.

    摘要翻译: 测试电缆的电缆测试系统包括脉冲发生模块,其在电缆的第一通信信道上发送第一脉冲。 在脉冲生成模块发送第一脉冲之后,采样模块等待预定的时间段,然后检测电缆的第二通信信道上的反射信号的第一幅度。 时域反射(TDR)模块接收第一幅度,并根据第一幅度验证电缆的正确操作。 当沿着电缆行进第一预定距离之后第一脉冲被反射回电缆测试系统时,预定时间段对应于估计的第一脉冲的往返传播延迟。 在随后的电缆测试迭代期间,采样模块递增地增加预定时间段,以便验证电缆的预定段的正确操作。

    Method and apparatus for establishing a communication mode between network devices in a network
    48.
    发明授权
    Method and apparatus for establishing a communication mode between network devices in a network 有权
    用于在网络中的网络设备之间建立通信模式的方法和装置

    公开(公告)号:US07924750B1

    公开(公告)日:2011-04-12

    申请号:US12697594

    申请日:2010-02-01

    申请人: William Lo

    发明人: William Lo

    IPC分类号: H04B7/00 H04L12/28

    CPC分类号: H04L12/40136

    摘要: A computer program comprises instructions for advertising a plurality of communication modes. In response to detecting that one or more communication modes of a second physical layer module have been advertised to a first physical layer module, the computer program synchronizes the communication mode between the first and second physical layer modules based on the plurality of advertised communication modes of the first physical layer module and the one or more advertised communication modes of the second physical layer module. In response to not having detected that one or more communication modes of the second physical layer module have been advertised to the first physical layer module, the computer program detects whether the second physical layer module has been preset to communicate in a full duplex mode, and sets the communication mode between the first physical layer module and the second physical layer module to the full duplex mode.

    摘要翻译: 计算机程序包括用于广告多个通信模式的指令。 响应于检测到第二物理层模块的一个或多个通信模式已被通告给第一物理层模块,计算机程序基于多个通告的通信模式来同步第一和第二物理层模块之间的通信模式 第一物理层模块和第二物理层模块的一个或多个通告的通信模式。 响应于没有检测到第二物理层模块的一个或多个通信模式已被通告给第一物理层模块,计算机程序检测第二物理层模块是否已被预设为以全双工模式进行通信,以及 将第一物理层模块和第二物理层模块之间的通信模式设置为全双工模式。

    Multispeed communications device
    49.
    发明授权
    Multispeed communications device 有权
    多速通讯设备

    公开(公告)号:US07839309B1

    公开(公告)日:2010-11-23

    申请号:US12356155

    申请日:2009-01-20

    IPC分类号: H03M5/06

    CPC分类号: H03M5/145 H03M5/16 H03M5/20

    摘要: A physical layer device includes a converter module to convert input data having a first predetermined number of bits into output data having a second predetermined number of bits. A scrambler module is operable to be activated and deactivated. The scrambler module receives the output data having the second predetermined number of bits. An encoding module modulates the output of the scrambler module in accordance with one of a plurality of modulation types and generates an encoded output signal having an output level. The encoding module is operable to vary the output levels of the encoded output signal.

    摘要翻译: 物理层设备包括转换器模块,用于将具有第一预定位数的输入数据转换成具有第二预定位数的输出数据。 加扰器模块可操作以被激活和去激活。 加扰器模块接收具有第二预定位数的输出数据。 编码模块根据多种调制类型之一调制扰频器模块的输出,并产生具有输出电平的编码输出信号。 编码模块可操作以改变编码的输出信号的输出电平。

    Methods and apparatus for measuring a length of a cable
    50.
    发明授权
    Methods and apparatus for measuring a length of a cable 有权
    用于测量电缆长度的方法和装置

    公开(公告)号:US07808249B1

    公开(公告)日:2010-10-05

    申请号:US12035816

    申请日:2008-02-22

    IPC分类号: G01R31/11

    CPC分类号: H04L43/50

    摘要: A physical layer (PHY) device of a network device includes a first module, a first cable-length measuring (CLM) module, and a first control module. The first module determines whether a remote PHY that communicates with the PHY device over a cable is capable of measuring a length of the cable. The first CLM module measures a first length of the cable. The first control module causes the first length to be transmitted to the remote PHY, receives a second length of the cable measured by the remote PHY, and adjusts an operating parameter of the PHY based on at least one of the first and second lengths.

    摘要翻译: 网络设备的物理层(PHY)设备包括第一模块,第一电缆长度测量(CLM)模块和第一控制模块。 第一模块确定通过电缆与PHY设备通信的远程PHY是否能够测量电缆的长度。 第一个CLM模块测量电缆的第一个长度。 第一控制模块使得第一长度被发送到远程PHY,接收由远程PHY测量的电缆的第二长度,并且基于第一和第二长度中的至少一个来调整PHY的操作参数。