Apparatus and method for automatic speed downshift for a two pair cable
    51.
    发明授权
    Apparatus and method for automatic speed downshift for a two pair cable 有权
    两对电缆自动减速装置及方法

    公开(公告)号:US07624197B1

    公开(公告)日:2009-11-24

    申请号:US09991043

    申请日:2001-11-21

    申请人: William Lo

    发明人: William Lo

    IPC分类号: G06F15/16

    CPC分类号: H04L12/40136

    摘要: A physical layer of a first network device is connected to cable of an Ethernet network. A digital signal processor (DSP) is connected to the cable. The DSP receives and decodes first signals on the cable from a second device. The DSP codes and transmits second signals to the second device on the cable. An autonegotiation controller is connected to the DSP and includes a cable detector that determines a first number of pairs of twisted pair wires of the cable that are operable. The autonegotiation controller also includes a speed adjuster that masks an advertised speed of the first device when the cable detector determines that the first number is less than the number required for a requested speed of the first device.

    摘要翻译: 第一网络设备的物理层连接到以太网网络的电缆。 数字信号处理器(DSP)连接到电缆。 DSP从第二个设备接收并解码电缆上的第一个信号。 DSP对电缆上的第二个设备进行编码并发送第二个信号。 自动协商控制器连接到DSP,并且包括电缆检测器,其确定可操作的电缆的第一对双绞线对。 自动协商控制器还包括一个速度调节器,当电缆检测器确定第一个数字小于第一个设备所请求的速度所需的数量时,屏蔽第一个设备的通告速度。

    Media and speed independent interface
    52.
    发明授权
    Media and speed independent interface 有权
    媒体和速度独立的界面

    公开(公告)号:US07599391B1

    公开(公告)日:2009-10-06

    申请号:US11114842

    申请日:2005-04-26

    申请人: William Lo

    发明人: William Lo

    IPC分类号: H04L12/50

    CPC分类号: H04L47/10 H04L47/22 H04L49/90

    摘要: A rate adaptation layer (RAL) module for converting from a first interface operating at a first rate to a second interface operating at a second rate comprises first and second input/output (I/O) modules that communicate with the first and second interfaces, respectively. A repeater module receives symbols from the first I/O module, and transmits the symbols n times to the second I/O module, where n is determined by the first and second rates. A pull-down module receives symbols from the second I/O module and selectively extracts symbols to be communicated to the first I/O module.

    摘要翻译: 用于从以第一速率操作的第一接口转换为以第二速率操作的第二接口的速率适配层(RAL)模块包括与第一和第二接口通信的第一和第二输入/输出(I / O)模块, 分别。 中继器模块从第一I / O模块接收符号,并将符号n次发送到第二I / O模块,其中n由第一和第二速率确定。 下拉模块从第二I / O模块接收符号,并且选择性地提取要传送到第一I / O模块的符号。

    Method and system for monitoring a MAC extra IPG count and adjusting the PHY transmit IPG
    53.
    发明授权
    Method and system for monitoring a MAC extra IPG count and adjusting the PHY transmit IPG 有权
    监控MAC额外IPG计数和调整PHY传输IPG的方法和系统

    公开(公告)号:US07593431B1

    公开(公告)日:2009-09-22

    申请号:US10329196

    申请日:2002-12-23

    IPC分类号: H04J3/12

    摘要: A device for controlling interpacket gaps in a data stream of packets. A receiver to receive the data stream of packets. A controller to monitor the data stream of packets and to selectively delete interpacket gaps. A transmit buffer to buffer packet data in the data stream of packets flowing from the controller.

    摘要翻译: 一种用于控制数据包的数据流中的分组间隙的装置。 接收数据包的数据流的接收器。 控制器,用于监视数据包的数据流,并选择性地删除数据包间隙。 发送缓冲器,用于缓冲从控制器流出的数据包的数据流中的分组数据。

    Multispeed communications device
    54.
    发明授权
    Multispeed communications device 有权
    多速通讯设备

    公开(公告)号:US07479906B1

    公开(公告)日:2009-01-20

    申请号:US11801316

    申请日:2007-05-09

    IPC分类号: H03M5/06

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

    摘要: A physical layer device comprises a mode selector that selects a mode. A clock selects a clock frequency from T clock frequencies based on the mode. A converter module selects one of N mapping functions based on the mode and converts an n-bit input to an m-bit output based on the selected one of the N mapping functions. A scrambler module scrambles the m-bit output or passes the m-bit output unchanged based on the mode. An encoding module modulates the m-bit output based on the selected clock frequency and one of M modulation modes selected based on the mode, where T, n, m, N and M are integers greater than one and n is not equal to m.

    摘要翻译: 物理层设备包括选择模式的模式选择器。 一个时钟根据该模式从T个时钟频率中选择一个时钟频率。 A转换器模块基于该模式选择N个映射函数之一,并且基于所选择的N个映射函数之一将n位输入转换为m位输出。 扰码器模块对m位输出进行加扰,或者根据该模式使m位输出不变。 编码模块基于所选择的时钟频率和基于模式选择的M个调制模式之一来调制m比特输出,其中T,n,m,N和M是大于1的整数,n不等于m。

    Ethernet automatic fiber/copper media selection logic
    55.
    发明授权
    Ethernet automatic fiber/copper media selection logic 有权
    以太网自动光纤/铜介质选择逻辑

    公开(公告)号:US07324507B1

    公开(公告)日:2008-01-29

    申请号:US10435301

    申请日:2003-05-09

    IPC分类号: H04L12/50 H04J3/16

    摘要: A network device includes a media access controller (MAC) and a physical layer device including an interface that communicates with the MAC, and first and second transceivers. A first autonegotiation circuit attempts to establish a first link using the first transceiver over a first medium. A second autonegotiation circuit attempts to establish a second link using the second transceiver over a second medium. A media selector communicates with the interface and the first and second autonegotiation circuits and enables data flow from the first medium to the MAC using the interface when the link over the first medium is established first. When a preferred medium selector prefers the second medium, the media selector monitors the second medium for a qualified energy detect event. When the qualified energy detect event occurs, the media selector allows a link to be established by the second medium.

    摘要翻译: 网络设备包括媒体接入控制器(MAC)和包括与MAC通信的接口的物理层设备以及第一和第二收发器。 第一自动协商电路尝试在第一媒体上使用第一收发器建立第一链路。 第二自动协商电路尝试在第二介质上使用第二收发器建立第二链路。 媒体选择器与接口和第一和第二自动协商电路进行通信,并且当首先建立通过第一媒体的链路时,使用接口使得能够从第一媒体到MAC的数据流。 当优选介质选择器优选第二介质时,介质选择器监视第二介质以进行合格的能量检测事件。 当合格的能量检测事件发生时,媒体选择器允许由第二媒体建立链接。

    Method and apparatus for automatic crossover and parallel detect
    56.
    发明授权
    Method and apparatus for automatic crossover and parallel detect 有权
    自动交叉和并行检测的方法和装置

    公开(公告)号:US07292596B1

    公开(公告)日:2007-11-06

    申请号:US10106720

    申请日:2002-03-26

    IPC分类号: H04L12/56

    CPC分类号: G06F13/4072

    摘要: A physical layer of an Ethernet network device includes first, second, third and fourth terminals. An autonegotiation circuit includes an autonegotiation wait timer having an autonegotiation wait period. An auto-crossover circuit selectively configures the first and second terminals as one of a transmitter and a receiver and the third and fourth terminals as the other of the transmitter and receiver. The auto-crossover circuit includes a sample timer having a sample timer period that has a value that is greater than or equal to the autonegotiation wait period. The auto-crossover circuit includes a random number generator that communicates with the sample timer and generates n random numbers. The sample timer selects one of n sample timer periods based on the generated random number. The n sample timer periods have values that are greater than or equal to the autonegotiation wait period.

    摘要翻译: 以太网网络设备的物理层包括第一,第二,第三和第四终端。 自动协商电路包括具有自动协商等待时间的自动协商等待计时器。 自动交叉电路选择性地将第一和第二终端配置为发射机和接收机之一,第三和第四终端作为发射机和接收机中的另一个。 自动交叉电路包括具有大于或等于自动协商等待周期的值的采样定时器周期的采样定时器。 自动交叉电路包括与采样定时器通信并产生n个随机数的随机数发生器。 采样定时器根据生成的随机数选择n个采样定时器周期中的一个。 n个采样定时器周期具有大于或等于自动协商等待周期的值。

    Low overhead coding with arbitrary control symbol placement
    57.
    发明授权
    Low overhead coding with arbitrary control symbol placement 有权
    具有任意控制符号放置的低开销编码

    公开(公告)号:US07251699B1

    公开(公告)日:2007-07-31

    申请号:US10601235

    申请日:2003-06-20

    申请人: William Lo

    发明人: William Lo

    IPC分类号: G06F15/16

    CPC分类号: H04L12/40136

    摘要: A physical coding sublayer (PCS) device in a physical layer device of an Ethernet network device includes a multiplexer that aggregates data, which includes at least one of data portions and control portions, from a plurality of data streams into a multiplexed data block. An encoder encodes the multiplexed data block to produce an encoded data block that includes n data blocks. Each of the n data blocks includes at least one of data portions, pointer portions, and control code portions. The control code portions can be located within any of the n data blocks.

    摘要翻译: 以太网网络设备的物理层设备中的物理编码子层(PCS)设备包括多路复用器,其将包括数据部分和控制部分中的至少一个的数据从多个数据流聚合成多路复用数据块。 编码器对复用的数据块进行编码以产生包括n个数据块的编码数据块。 n个数据块中的每一个包括数据部分,指针部分和控制代码部分中的至少一个。 控制代码部分可以位于n个数据块中的任一个内。

    Cable tester
    58.
    发明授权
    Cable tester 有权
    电缆测试仪

    公开(公告)号:US07250771B1

    公开(公告)日:2007-07-31

    申请号:US11455359

    申请日:2006-06-19

    IPC分类号: G01R31/11

    CPC分类号: G01R31/021 G01R31/11

    摘要: A cable tester comprises a test initiating module that performs B cable tests. Each of said B cable tests includes selectively transmitting a test pulse on the cable, measuring a reflection amplitude, and calculating a cable length. A test results module determines a cable status for each of said B cable tests based on said measured amplitude and said calculated cable length and that determines an overall cable status of the cable based on the cable at least one of passing and failing A out of B cable tests. A and B are integers greater than zero and B is greater than A.

    摘要翻译: 电缆测试仪包括执行B电缆测试的测试启动模块。 所述B电缆测试中的每一个包括选择性地在电缆上发送测试脉冲,测量反射幅度以及计算电缆长度。 测试结果模块基于所述测量的幅度和所计算的电缆长度来确定每个所述B电缆测试的电缆状态,并且基于所述电缆确定所述电缆的整体电缆状态,所述电缆至少一个通过和失败的B中的A 电缆测试。 A和B是大于零的整数,B大于A.

    Multispeed communications device
    59.
    发明授权
    Multispeed communications device 有权
    多速通讯设备

    公开(公告)号:US07135996B1

    公开(公告)日:2006-11-14

    申请号:US11124997

    申请日:2005-05-09

    IPC分类号: H03M5/06

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

    摘要: A physical layer device for a network device comprises a converter module that selectively converts an n-bit input to an m-bit output based on first and second mapping functions. A scrambler module selectively scrambles the m-bit output. An encoding module receives the m-bit output from the scrambler module and selectively maps the m-bit output based on the first mapping function to three level output signals and the m-bit output based on the second mapping function to four level output signals.

    摘要翻译: 用于网络设备的物理层设备包括转换器模块,其基于第一和第二映射功能选择性地将n位输入转换为m位输出。 扰频器模块选择性地加扰m位输出。 编码模块从加扰器模块接收m位输出,并将基于第一映射功能的m位输出选择性地映射到三电平输出信号,并将基于第二映射函数的m位输出映射到四电平输出信号。

    Reduced pin gigabit media independent interface
    60.
    发明授权
    Reduced pin gigabit media independent interface 有权
    降低千兆以太网媒体独立接口

    公开(公告)号:US07065075B1

    公开(公告)日:2006-06-20

    申请号:US11072323

    申请日:2005-03-07

    申请人: William Lo

    发明人: William Lo

    IPC分类号: H04L12/50 H04L27/04

    摘要: A system for encoding signals for a network device includes an encoder configured to encode a transmit control signal. The transmit control signal includes a transmit enable signal in a first half of a cycle of a clock signal, and a transmit error signal in a second half of the cycle of the clock signal. The system includes a control signal transmitter configured to transmit the encoded transmit control signal. The system includes a data signal transmitter configured to transmit a transmit data signal. When neither the transmit enable signal nor the transmit error signal is in a first state in a respective half of the cycle of the clock signal, the transmit data signal includes signaling data.

    摘要翻译: 用于对网络设备的信号进行编码的系统包括被配置为对发射控制信号进行编码的编码器。 发送控制信号在时钟信号的周期的前半部分中包括发送使能信号,并且在时钟信号的周期的后半部分包括发送误差信号。 该系统包括被配置为发送编码的发射控制信号的控制信号发射机。 该系统包括被配置为发送发送数据信号的数据信号发送器。 当发送使能信号和发送错误信号在时钟信号的周期的相应一半中处于第一状态时,发送数据信号包括信令数据。