公开(公告)号：US07852768B1

公开(公告)日：2010-12-14

申请号：US11893424

申请日：2007-08-16

申请人： Donald Pannell ,  William Lo

发明人： Donald Pannell ,  William Lo

IPC分类号： H04L12/26

CPC分类号： H04L49/65 ,  H04L41/00

摘要： A request frame for use in managing a physical-layer device (PHY) comprises a preamble; a start frame delimiter for the frame; a destination media access control (MAC) address for the frame, wherein the destination MAC address is stored in the PHY; a source MAC address for the frame; a length/type for the frame, wherein the length/type is stored in the PHY; remote management data comprising one or more commands to be executed by the PHY; and a frame check sequence for the frame. A response frame comprises a preamble; a start frame delimiter for the frame; a destination MAC address for the frame; a source MAC address for the frame; a length/type for the frame, wherein the length/type is stored in the PHY; remote management data comprising a response to a command from a management device having the destination MAC address; and a frame check sequence for the frame.

摘要翻译： 用于管理物理层设备（PHY）的请求帧包括前同步码; 帧的起始帧分隔符; 用于所述帧的目的地媒体访问控制（MAC）地址，其中所述目的地MAC地址存储在所述PHY中; 帧的源MAC地址; 帧的长度/类型，其中长度/类型存储在PHY中; 远程管理数据包括由PHY执行的一个或多个命令; 以及帧的帧校验序列。 响应帧包括前同步码; 帧的起始帧分隔符; 帧的目的MAC地址; 帧的源MAC地址; 帧的长度/类型，其中长度/类型存储在PHY中; 远程管理数据包括对具有目的地MAC地址的管理设备的命令的响应; 以及帧的帧校验序列。

公开(公告)号：US06977507B1

公开(公告)日：2005-12-20

申请号：US10331221

申请日：2002-12-30

申请人： Donald Pannell ,  William Lo ,  Yiqing Guo

发明人： Donald Pannell ,  William Lo ,  Yiqing Guo

IPC分类号： G01R31/02 ,  G01R31/11 ,  H04M3/28

CPC分类号： H04M3/28 ,  G01R31/021 ,  G01R31/11

摘要： A system comprises a physical layer device that is adapted to communicate with a cable medium and that includes a first input/output terminal. A first transceiver communicates with the first input/output terminal and the cable medium. A cable tester tests the cable medium and determines a cable status. An indicator communciates with the physical layer device and identifies at least one of link presence, link abscence, link activity, link duplex and or link speed of the first input/output terminal during normal operation. The cable tester also uses the indicator to indicate at least one of cable testing status during the test and/or the cable status after the test.

摘要翻译： 一种系统包括适于与电缆介质通信并且包括第一输入/输出端子的物理层设备。 第一收发器与第一输入/输出端子和电缆介质通信。 电缆测试仪测试电缆介质并确定电缆状态。 指示符与物理层设备通信，并且在正常操作期间识别第一输入/输出终端的链路存在，链路异常，链路活动，链路双工和/或链路速度中的至少一个。 电缆测试仪还使用指示器在测试中指示电缆测试状态和/或测试后的电缆状态中的至少一个。

公开(公告)号：US07012436B1

公开(公告)日：2006-03-14

申请号：US11093101

申请日：2005-03-29

申请人： Donald Pannell ,  William Lo ,  Yiqing Guo

发明人： Donald Pannell ,  William Lo ,  Yiqing Guo

IPC分类号： G01R31/02

CPC分类号： G01R31/083 ,  G01R31/088 ,  G01R31/11

摘要： A physical layer device is adapted to communicate with a cable medium and communicates with an indicator. The physical layer device includes a first input/output terminal, a first transceiver that communicates with the first input/output terminal that is adapted to be connected to a cable medium, and a cable tester that tests the cable medium and determines a cable status using a pretest module. The pretest module senses activity on the cable medium and enables testing if activity is not detected for a first period, and a test module that is enabled by said pretest module, transmits a test pilse on the cable medium, measures a reflection amplitude and calculates a cable length. The cable tester determines the cable status based on the measured amplitude and the calculated cable length, and the indicator indicates at least one of cable testing status during the test and the cable status after the trst. The indicator also inducates at least one of link presence, link absence, link acitivty, link duplex and link speed of the first input/output terminal during normal operation.

摘要翻译： 物理层设备适于与电缆介质通信并与指示器通信。 物理层设备包括第一输入/输出端子，与适于连接到电缆介质的第一输入/输出端子通信的第一收发器，以及测试电缆介质并且使用 一个预测试模块。 预测试模块感测电缆介质上的活动，并且能够测试在第一时间段内是否没有检测到活动，并且由所述预测试模块启用的测试模块在电缆介质上传送测试薄片，测量反射幅度并计算 电缆长度。 电缆测试仪根据测量的幅度和计算出的电缆长度来确定电缆状态，并且指示灯表示测试期间的电缆测试状态和trst之后的电缆状态中的至少一个。 该指示器还在正常操作期间引入第一输入/输出端子的链路存在，链路缺失，链路活动性，链路双工和链路速度中的至少一个。

公开(公告)号：US07002354B1

公开(公告)日：2006-02-21

申请号：US10967602

申请日：2004-10-18

申请人： Donald Pannell ,  William Lo ,  Yiqing Guo

发明人： Donald Pannell ,  William Lo ,  Yiqing Guo

IPC分类号： G01R31/11

CPC分类号： G01R31/083 ,  G01R31/088 ,  G01R31/11

摘要： A physical layer device that is adapted to communicate with a cable medium and that includes an indicator comprises a first input/output terminal and a first transceiver that communicates with the first input/output terminal that is adapted to be connected to the cable medium. A detector detects a power over Ethernet (POE) device. A switching device selectively provides power from a power supply over the cable medium when the detector detects the POE device. A cable tester communicates with the first transceiver, tests the cable medium and determines a cable status, and delays testing of the cable medium when the detector detects the POE device until the switching device provides the power. The indicator indicates at least one of cable testing status during the test and the cable status after the test.

摘要翻译： 适于与电缆介质通信并且包括指示符的物理层设备包括与适于连接到电缆介质的第一输入/输出终端通信的第一输入/输出终端和第一收发器。 检测器检测以太网供电（POE）设备。 当检测器检测到POE设备时，开关设备选择性地通过电缆介质从电源提供电力。 电缆测试器与第一收发器通信，测试电缆介质并确定电缆状态，并且当检测器检测到POE设备直到交换设备提供电源时，延迟对电缆介质的测试。 该指示器表示测试期间的电缆测试状态和测试后的电缆状态中的至少一个。

公开(公告)号：US09130746B1

公开(公告)日：2015-09-08

申请号：US13350969

申请日：2012-01-16

申请人： William Lo

发明人： William Lo

IPC分类号： H04L5/16 ,  H04L5/14

CPC分类号： H04L5/16 ,  H04B3/02 ,  H04L5/14 ,  H04L5/1438 ,  H04L69/24

摘要： Systems, methods, and other embodiments associated with auto-negotiating over a single pair PHY are described. According to one embodiment, an apparatus includes a physical layer (PHY) transceiver configured to communicate over a single twisted pair channel. The apparatus includes a setup logic configured to control the PHY transceiver to initiate an auto-negotiation sequence over the single twisted pair channel with a remote device upon detecting a transmission from the remote device on the single twisted pair channel. The auto-negotiation sequence includes an exchange of parameters with the remote device using a half-duplex mode to communicate on the single twisted pair channel.

摘要翻译： 描述了通过单对PHY自动协商相关联的系统，方法和其他实施例。 根据一个实施例，一种装置包括被配置为通过单个双绞线信道进行通信的物理层（PHY）收发器。 该装置包括设置逻辑，其被配置为在检测到来自单个双绞线信道上的远程设备的传输时，通过远程设备来控制PHY收发器在单个双绞线信道上发起自动协商序列。 自动协商序列包括使用半双工模式与远程设备交换参数，以在单个双绞线信道上进行通信。

公开(公告)号：US08179144B1

公开(公告)日：2012-05-15

申请号：US13023410

申请日：2011-02-08

申请人： William Lo ,  Yiqing Guo ,  Tak Tsui ,  Tsin-Ho Leung ,  Runsheng He ,  Eric Janofsky

发明人： William Lo ,  Yiqing Guo ,  Tak Tsui ,  Tsin-Ho Leung ,  Runsheng He ,  Eric Janofsky

IPC分类号： G01R31/11

CPC分类号： H04L43/50 ,  G01R31/11 ,  H04L12/10

摘要： A network device including a physical layer (PHY) device and an autonegotiation module. The PHY device is configured to interface with N cable pairs, where N is greater than 1. The PHY device includes a cable test module configured to diagnose a short circuit in one of the N cable pairs. The autonegotiation module is configured to i) selectively perform autonegotiation to establish a link with a link partner at one of a first link speed and a second link speed that is lower than the first link speed, and ii) select between the first link speed and the second link speed in response to the cable test module diagnosing the short circuit.

摘要翻译： 一种包括物理层（PHY）设备和自动协商模块的网络设备。 PHY设备被配置为与N个大于1的N个电缆对接口。PHY设备包括被配置为诊断N个电缆对之一中的短路的电缆测试模块。 自动协商模块被配置为：i）选择性地执行自动协商以便以低于第一链路速度的第一链路速度和第二链路速度中的一个建立与链路伙伴的链路，以及ii）在第一链路速度和 响应于电缆测试模块诊断短路的第二链路速度。

公开(公告)号：US08018962B1

公开(公告)日：2011-09-13

申请号：US12723915

申请日：2010-03-15

申请人： Sehat Sutardja ,  William Lo

发明人： Sehat Sutardja ,  William Lo

IPC分类号： H04L12/56

CPC分类号： H04L47/25 ,  H04J3/18 ,  H04L12/2874 ,  H04L25/0262 ,  H04L49/3054 ,  H04L49/351 ,  H04L69/24

摘要： A physical layer interface for a switch. The physical layer interface includes an auto-negotiation circuit, a transceiver, and a serial interface. The auto-negotiation circuit is configured to negotiate a first data transmission rate with a network client. The transceiver is configured to communicate with the network client at the data transmission rate. The serializer interface is configured to communicate with a media access controller (MAC) at a second data transmission rate that is different than the first data transmission rate.

摘要翻译： 交换机的物理层接口。 物理层接口包括自动协商电路，收发器和串行接口。 自动协商电路被配置为与网络客户端协商第一数据传输速率。 收发器被配置为以数据传输速率与网络客户端进行通信。 序列化器接口被配置为以与第一数据传输速率不同的第二数据传输速率与媒体接入控制器（MAC）进行通信。

公开(公告)号：US20110208985A1

公开(公告)日：2011-08-25

申请号：US13099947

申请日：2011-05-03

申请人： William Lo

发明人： William Lo

IPC分类号： G06F1/32

CPC分类号： H04L12/12 ,  Y02D50/20 ,  Y02D50/40 ,  Y02D50/42

摘要： A network interface including: a medium access control device configured to operate at a first power state during an inactive power mode, and operate at a second power state during an active power mode; a physical layer device including (i) an energy detect module configured to detect energy on a medium during the inactive power mode, and (ii) an energy save module configured to time a first pre-determined period subsequent to the energy detect module detecting energy on the medium. The medium access control device is further configured to, subsequent to the energy detect module detecting energy on the medium, transition to the second power state of the active power mode, and communication with the medium access control device via the medium is enabled subsequent to expiration of the first pre-determined period.

摘要翻译： 一种网络接口，包括：媒体接入控制装置，被配置为在无功功率模式期间在第一功率状态下操作，并且在有功功率模式期间在第二功率状态下操作; 物理层设备，包括：（i）能量检测模块，其被配置为在所述非活动功率模式期间检测介质上的能量;以及（ii）能量保存模块，其被配置为在所述能量检测模块检测能量之后的第一预定时段 在媒体上 所述介质访问控制装置还被配置为在所述能量检测模块检测到所述介质上的能量之后，转换到所述有功功率模式的第二功率状态，并且经过所述介质与所述介质访问控制装置经由所述介质的通信被启用 的第一个预定时期。

公开(公告)号：US07983259B1

公开(公告)日：2011-07-19

申请号：US12837152

申请日：2010-07-15

申请人： William Lo

发明人： William Lo

IPC分类号： H04L27/04 ,  H04L12/50

CPC分类号： H04L49/40 ,  H04L49/30 ,  H04L49/351

摘要： A medium access control (MAC) device includes a first set of transmit pins, a second set of transmit pins, and a first encoder. The first set receives (i) first transmit data signals and (ii) first transmit control signals from a host. The first transmit data signals are received on a first subset of the first set. The second set outputs (i) second transmit data signals and (ii) second transmit control signals to a physical layer (PHY) device. The second transmit data signals are output on a second subset of the second set. The second subset includes fewer transmit pins than the first subset. The first encoder encodes two of the first transmit control signals received on two of the first set of transmit pins to generate one of the second transmit control signals output on one of the second set of transmit pins.

摘要翻译： 介质访问控制（MAC）设备包括第一组发送引脚，第二组发送引脚和第一编码器。 第一组接收（i）首先发送数据信号和（ii）首先从主机发送控制信号。 在第一组的第一子集上接收第一发送数据信号。 第二组输出（i）第二发送数据信号和（ii）第二发送控制信号到物理层（PHY）设备。 第二发送数据信号在第二组的第二子集上输出。 第二子集包括比第一子集更少的发送引脚。 第一编码器编码在第一组发射引脚中的两个上接收的第一发射控制信号中的两个，以产生在第二组发射引脚之一上输出的第二发射控制信号之一。

公开(公告)号：US07979587B1

公开(公告)日：2011-07-12

申请号：US12624522

申请日：2009-11-24

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 device is connected to a plurality of twisted pairs of wire. The physical layer includes an autonegotiation controller that initially advertises a plurality of operating speeds associated with the device and receives a request for the device to operate at a first operating speed. A cable detector determines whether the physical layer is connected to a sufficient number of twisted pair wires to support the first operating speed. A speed adjuster alters the plurality of operating speeds advertised by the autonegotiation controller in response to the physical layer not being connected to a sufficient number of twisted pair wires to support the first operating speed. The speed adjuster alters the plurality of operating speeds advertised by the autonegotiation controller by masking one of the plurality of operating speeds corresponding to the first operating speed.

摘要翻译： 设备的物理层连接到多条双绞线对。 物理层包括自动协商控制器，其最初通告与设备相关联的多个操作速度并且接收对设备以第一操作速度操作的请求。 电缆检测器确定物理层是否连接到足够数量的双绞线以支持第一操作速度。 响应于物理层不连接到足够数量的双绞线以支持第一操作速度，速度调节器改变由自动协商控制器发布的多个操作速度。 速度调节器通过掩蔽与第一操作速度相对应的多个操作速度中的一个来改变由自动协商控制器发布的多个操作速度。