公开(公告)号：US06243426B1

公开(公告)日：2001-06-05

申请号：US09163316

申请日：1998-09-30

申请人： William Lo ,  Yi Cheng

发明人： William Lo ,  Yi Cheng

IPC分类号： H04L2534

CPC分类号： H04L25/4923 ,  H04L25/0266

摘要： A transmitter within a line driver circuit is configured to supply data signals in compliance with the Multilevel Transmission-3 (MLT-3) protocol for high speed data communication. The transmitter comprises a pre-driver system and a final driver. The pre-driver system comprises a plurality of individual pre-drivers that are in parallel. A zero drive logic designates any number of individual pre-drivers as zero drive types, such that these designated zero drive pre-drivers are turned ON during a zero signaling state. The partially turned ON pre-driver system, during the zero state, permits the final driver to rapidly output positive and negative signals in accord with the MLT-3 protocol.

摘要翻译： 线路驱动器电路内的发射机被配置为提供符合用于高速数据通信的多级传输-3（MLT-3）协议的数据信号。 发射机包括预驱动器系统和最终驱动器。 预驱动器系统包括并行的多个单独的前驱动器。 零驱动逻辑将任意数量的各个预驱动器指定为零驱动类型，使得这些指定的零驱动器预驱动器在零信号状态期间被接通。 在零状态期间部分打开的预驱动器系统允许最终驱动器根据MLT-3协议快速输出正和负信号。

公开(公告)号：US07203851B1

公开(公告)日：2007-04-10

申请号：US10098865

申请日：2002-03-15

申请人： William Lo ,  Yi Cheng ,  Leechung Yiu ,  Calvin Fang

发明人： William Lo ,  Yi Cheng ,  Leechung Yiu ,  Calvin Fang

IPC分类号： H04Q5/22

CPC分类号： H04B3/46 ,  H04B3/548 ,  H04B2203/547

摘要： A first network device supplies power to a second network device in communication therewith. The first network device comprises a physical layer device which includes a pulse generator to generate a test signal comprising n sub-pulses to be transmitted to the second network device, wherein in n being greater than 2. A detector is responsive to the second network device, and a controller is in communication with the detector and the pulse generator. When the detector detects j pulses which are greater than a predetermined threshold, 1≦j

摘要翻译： 第一网络设备向与之通信的第二网络设备供电。 第一网络设备包括物理层设备，该物理层设备包括脉冲发生器，以产生包含要传输到第二网络设备的n个子脉冲的测试信号，其中n大于2.检测器响应于第二网络设备 并且控制器与检测器和脉冲发生器通信。 当检测器检测到大于预定阈值的j个脉冲时，1 <= j

公开(公告)号：US07724692B1

公开(公告)日：2010-05-25

申请号：US11650052

申请日：2007-01-05

申请人： Calvin Fang ,  Yi Cheng ,  William Lo

发明人： Calvin Fang ,  Yi Cheng ,  William Lo

IPC分类号： H04B1/44

CPC分类号： H04B1/44

摘要： A physical layer device comprises a transmitter of a first network device that transmits an autonegotiation signal to a second network device. A receiver of the first network device receives a received signal from the second network device. An autonegotiation controller autonegotiates link parameters for a link between the first network device and the second network device, monitors autonegotiation pulses in the autonegotiation signal relative to autonegotiation pulses in the received signal received during a window, and selectively blinds autonegotiation based on the monitoring.

摘要翻译： 物理层设备包括将自动协商信号发送到第二网络设备的第一网络设备的发射机。 第一网络设备的接收机从第二网络设备接收接收到的信号。 自动协商控制器自动协商第一网络设备和第二网络设备之间的链路的链路参数，监视自动协商信号中相对于在窗口期间接收到的接收信号中的自动协商脉冲的自动协商脉冲，并且基于该监视选择性地盲目自动协商。

公开(公告)号：US07161911B1

公开(公告)日：2007-01-09

申请号：US10099050

申请日：2002-03-15

申请人： Calvin Fang ,  Yi Cheng ,  William Lo

发明人： Calvin Fang ,  Yi Cheng ,  William Lo

IPC分类号： H04B1/44 ,  H04L12/56

CPC分类号： H04B1/44

摘要： A first network device is provided in communications with a second network device comprising a physical layer device. The physical layer device comprises a transmitter to transmit an autonegotiation signal to the second network device, a receiver to receive a received signal from the second network device, and a controller comprising an autonegotiation controller to set a highest common data rate between the first network device and the second network device. The autonegotiation controller compares the autonegotiation signal and the received signal and selectively prevents the autonegotiation when the autonegotiation signal is the same as the received signal.

摘要翻译： 提供与包括物理层设备的第二网络设备通信的第一网络设备。 物理层设备包括：发射机，用于向第二网络设备发送自动协商信号;接收机，用于从第二网络设备接收接收到的信号;以及控制器，包括自动协商控制器，以在第一网络设备 和第二网络设备。 自动协商控制器将自动协商信号和接收到的信号进行比较，并且当自动协商信号与接收到的信号相同时，选择性地防止自动协商。

公开(公告)号：US6097767A

公开(公告)日：2000-08-01

申请号：US61252

申请日：1998-04-17

申请人： William Lo ,  Yi Cheng ,  Bin Guo

发明人： William Lo ,  Yi Cheng ,  Bin Guo

IPC分类号： H04B3/14 ,  H03D3/18

CPC分类号： H04B3/145 ,  H04B3/148

摘要： An optimum equalizer setting is determined for a signal equalizer in a network receiver by successively setting the equalizer to different predetermined settings, detecting timing correlation results between the equalized signal and a recovered clock in a digital phase locked loop, and determining a normalized distribution result for each of the predetermined equalizer settings based on the timing correlation results. The equalizer setting having the minimum normalized distribution result can then be selected as the optimum equalizer setting. Use of the correlation result from the phase locked loop enables the equalizer controller determining the optimum equalizer setting to determine the setting using a closed-loop setting. Hence, the equalizer controller can effectively determine the equalizer setting that causes the minimum amount of jitter in the phase locked loop.

摘要翻译： 通过将均衡器连续地设置为不同的预定设置，检测均衡信号和数字锁相环中的恢复时钟之间的定时相关结果，确定网络接收机中的信号均衡器的最佳均衡器设置，并且确定归一化分布结果 基于定时相关结果的每个预定均衡器设置。 然后可以选择具有最小归一化分布结果的均衡器设置作为最佳均衡器设置。 使用相位锁定环路的相关结果使均衡器控制器能够确定最佳均衡器设置，以使用闭环设置来确定设置。 因此，均衡器控制器可以有效地确定在锁相环中产生最小抖动量的均衡器设置。

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。