公开(公告)号：US20070046947A1

公开(公告)日：2007-03-01

申请号：US11261996

申请日：2005-10-27

Applicant: William Lo ,  Kenneth Wilsher ,  Nagamani Nataraj ,  Nina Boiadjieva

Inventor： William Lo ,  Kenneth Wilsher ,  Nagamani Nataraj ,  Nina Boiadjieva

IPC: G01B9/02

CPC classification number: G01R31/307

Abstract: A system for probing a DUT is disclosed, the system having a pulsed laser source, a CW laser source, beam optics designed to point a reference beam and a probing beam at the same location on the DUT, optical detectors for detecting the reflected reference and probing beams, and a collection electronics. The beam optics is a common-path polarization differential probing (PDP) optics. The common-path PDP optics divides the incident laser beam into two beams of orthogonal polarization - one beam simulating a reference beam while the other simulating a probing beam. Both reference and probing beams are pointed to the same location on the DUT. Due to the intrinsic asymmetry of a CMOS transistor, the interaction of the reference and probing beams with the DUT result in different phase modulation in each beam. This difference can be investigated to study the response of the DUT to the stimulus signal.

Abstract translation: 公开了一种用于探测DUT的系统，该系统具有脉冲激光源，CW激光源，设计用于将DUT上的相同位置处的参考光束和探测光束指向的光束光学元件，用于检测反射参考的光学检测器和 探测梁和收集电子设备。 光束光学器件是公共路径偏振微分探测（PDP）光学器件。 公共路径PDP光学器件将入射激光束分成两束正交偏振光束 - 一个模拟参考光束的光束，另一个模拟探测光束。 参考和探测光束都指向DUT上相同的位置。 由于CMOS晶体管的固有不对称性，参考光束和探测光束与DUT的相互作用导致每个光束中的不同相位调制。 可以研究这种差异来研究DUT对刺激信号的响应。

公开(公告)号：US07161911B1

公开(公告)日：2007-01-09

申请号：US10099050

申请日：2002-03-15

Applicant: Calvin Fang ,  Yi Cheng ,  William Lo

Inventor： Calvin Fang ,  Yi Cheng ,  William Lo

IPC: H04B1/44 ,  H04L12/56

CPC classification number: H04B1/44

Abstract: 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.

Abstract translation: 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：US20070002329A1

公开(公告)日：2007-01-04

申请号：US11169423

申请日：2005-06-29

Applicant: Steven Kasapi ,  Kenneth Wilsher ,  Gary Woods ,  William Lo ,  Radu Ispasoiu ,  Nagamani Nataraj ,  Nina Boiadjieva

Inventor： Steven Kasapi ,  Kenneth Wilsher ,  Gary Woods ,  William Lo ,  Radu Ispasoiu ,  Nagamani Nataraj ,  Nina Boiadjieva

IPC: G01B9/02

CPC classification number: G01R31/308 ,  G01R31/311

Abstract: An apparatus and method for laser probing of a DUT at very high temporal resolution is disclosed. The system includes a CW laser source, a beam optics designed to point two orthogonally polarized beams at the same location on the DUT, optical detectors for detecting the reflected beams, collection electronics, and an oscilloscope. The beam optics defines a common-path polarization differential probing (PDP) optics. The common-path PDP optics divides the laser beam into two beams of orthogonal polarization. Due to the intrinsic asymmetry of a CMOS transistor, the interaction of the beams with the DUT result in different phase modulation in each beam. This difference can be investigated to study the response of the DUT to the stimulus signal.

Abstract translation: 公开了一种以非常高的时间分辨率激光探测DUT的装置和方法。 该系统包括CW激光源，设计用于在DUT上的相同位置处指向两个正交偏振光束的光束光学元件，用于检测反射光束的光学检测器，收集电子器件和示波器。 光束光学器件定义了共路径偏振微分探测（PDP）光学器件。 公共路径PDP光学将激光束分成两束正交极化。 由于CMOS晶体管的固有不对称性，光束与DUT的相互作用在每个光束中产生不同的相位调制。 可以研究这种差异来研究DUT对刺激信号的响应。

公开(公告)号：US07068044B1

公开(公告)日：2006-06-27

申请号：US11066807

申请日：2005-02-25

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

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

IPC: G01R31/11

CPC classification number: H04L1/248 ,  H04L43/50

Abstract: A cable tester includes a pretest module that senses activity on a cable and selectively enables testing depending upon the sensed activity. A test module is enabled by the pretest module, transmits test pulses on the cable, measures a refelction amplitude, calculates a cable length, and determines a cable status based on the measures amplitude and the calculated cable length. A polarity detector communicates with the cable tester and detects a polarity of at least one pair of the cable. The test module senses activity on a first pair of the cable, enables testing if activity is not detected for a first period, and enables testing of the first pair if, during the first period, activity is detected on the first pair and is subsequently not detected on the first pair for a second period after the activity is detected.

Abstract translation: 电缆测试器包括一个预测试模块，其感测电缆上的活动并根据感测的活动选择性地进行测试。 测试模块由预测试模块启用，在电缆上传输测试脉冲，测量反射振幅，计算电缆长度，并根据测量幅度和计算的电缆长度确定电缆状态。 极性检测器与电缆测试器通信，并检测至少一对电缆的极性。 测试模块感测第一对电缆上的活动，如果在第一个时间段内没有检测到活动，则能够进行测试，并且如果在第一个周期内检测到第一对活动并且随后不是 在检测到活动之后的第二个周期中检测到第一对。

公开(公告)号：US07026825B1

公开(公告)日：2006-04-11

申请号：US11129202

申请日：2005-05-13

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

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

IPC: G01R31/02

CPC classification number: G01R31/021 ,  G01R31/11

Abstract: A physical layer device includes a cable tester that determines a cable status. A test module transmits a test pulse on the cable, measures reflection amplitude, calculates a cable length, and determines the cable status based on the measured amplitude and the calculated cable length. A first digital signal processor (DSP) communicates with a first pair of the cable and includes a first echo canceller having a finite impulse response (FIR) filter with taps and a first crosstalk canceller having a FIR filter with taps. A second DSP communicates with a second pair of the cable and includes a second echo canceller having a FIR filter with taps and a second crosstalk canceller having a FIR filter with taps. The cable tester calculates a distance to at least one of echo and crosstalk based on values of the taps of the first echo canceller and the second crosstalk canceller.

Abstract translation: 物理层设备包括确定电缆状态的电缆测试器。 测试模块在电缆上传输测试脉冲，测量反射幅度，计算电缆长度，并根据测量的幅度和计算的电缆长度确定电缆状态。 第一数字信号处理器（DSP）与第一对电缆通信，并且包括具有抽头的有限脉冲响应（FIR）滤波器的第一回声消除器和具有抽头的FIR滤波器的第一串扰消除器。 第二DSP与第二对电缆通信，并且包括具有抽头的FIR滤波器的第二回声消除器和具有抽头的FIR滤波器的第二串扰消除器。 电缆测试仪基于第一回波消除器和第二串扰消除器的抽头的值计算回波和串扰中的至少一个的距离。

公开(公告)号：US20060001669A1

公开(公告)日：2006-01-05

申请号：US11196651

申请日：2005-08-03

Applicant: Sehat Sutardja ,  Pantas Sutardja ,  William Lo

Inventor： Sehat Sutardja ,  Pantas Sutardja ,  William Lo

IPC: G06F15/16

CPC classification number: G06F11/2033 ,  G01R31/318536 ,  G06F11/2007 ,  G06F11/2038 ,  G06F11/2041 ,  G11C29/848 ,  H01L27/14603

Abstract: A self-reparable semiconductor including a graphics processing unit includes a first pixel processor that performs a first function and a first spare pixel processor. The first and first spare pixel processors are functionally interchangeable. Switching devices communicate with the first and first spare pixel processors and replace the first pixel processor with the first spare pixel processor when the first pixel processor is inoperable. A controller identifies at least one inoperable pixel processor and generates configuration data for configuring the switching devices to replace the inoperable pixel processor. Memory that is located on the self-reparable semiconductor stores the configuration data for the switching devices. A second pixel processor is functionally interchangeable with the first and first spare pixel processors. The first spare pixel processor is located one of between the first and second pixel processors or adjacent to one of the first or the second pixel processors.

Abstract translation: 包括图形处理单元的自修复半导体包括执行第一功能的第一像素处理器和第一备用像素处理器。 第一和第一备用像素处理器在功能上是可互换的。 当第一像素处理器不可操作时，开关装置与第一和第一备用像素处理器进行通信，并用第一备用像素处理器替换第一像素处理器。 控制器识别至少一个不可操作的像素处理器，并且生成用于配置切换装置以替换不可操作的像素处理器的配置数据。 位于自修复半导体的存储器存储开关器件的配置数据。 第二像素处理器在功能上可与第一和第一备用像素处理器互换。 第一备用像素处理器位于第一和第二像素处理器之一之间或与第一或第二像素处理器之一相邻。

公开(公告)号：US06977507B1

公开(公告)日：2005-12-20

申请号：US10331221

申请日：2002-12-30

Applicant: Donald Pannell ,  William Lo ,  Yiqing Guo

Inventor： Donald Pannell ,  William Lo ,  Yiqing Guo

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

CPC classification number: H04M3/28 ,  G01R31/021 ,  G01R31/11

Abstract: 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.

Abstract translation: 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：US20050146321A1

公开(公告)日：2005-07-07

申请号：US11040333

申请日：2005-01-20

Applicant: Romain Desplats ,  Patricia Le Coupanec ,  William Lo ,  Philippe Perdu ,  Steven Kasapi

Inventor： Romain Desplats ,  Patricia Le Coupanec ,  William Lo ,  Philippe Perdu ,  Steven Kasapi

IPC: G01R31/311 ,  G01R1/00

CPC classification number: G01R31/2656 ,  G01R31/311

Abstract: A system, apparatus, and method for analyzing photon emission data to discriminate between photons emitted by transistors and photons emitted by background sources. The analysis involves spatial and/or temporal correlation of photon emissions. After correlation, the analysis may further involve obtaining a likelihood that the correlated photons were emitted by a transistor. After correlation, the analysis may also further involve assigning a weight to individual photon emissions as a function of the correlation. The weight, in some instances, reflecting a likelihood that the photons were emitted by a transistor. The analysis may further involve automatically identifying transistors in a photon emission image.

公开(公告)号：US06385738B1

公开(公告)日：2002-05-07

申请号：US09280648

申请日：1999-03-29

Applicant: William Lo

Inventor： William Lo

IPC: G06F11277

CPC classification number: H04L1/242 ,  H04L7/0091 ,  H04L43/50

Abstract: A physical layer device (PHY) device in an Ethernet LAN is configured to permit ease of testing of its transmitter logic. The PHY device comprises a reset extension circuit for latching on the clock signals from a phase-locked loop (PLL) after the PLL has stabilized upon power-up or reset. The PHY device transmits a known valid bit pattern for testing purposes. A signal analyzer receives the transmitted bit pattern from the PHY device and compares the received bit pattern with a known valid bit pattern. A match indicates the proper operation of the PHY device transmitter logic.

Abstract translation: 以太网LAN中的物理层设备（PHY）设备被配置为允许容易地测试其发射机逻辑。 PHY器件包括复位扩展电路，用于在PLL在上电或复位之后稳定时锁存来自锁相环（PLL）的时钟信号。 PHY设备发送已知的有效位模式用于测试目的。 信号分析仪从PHY装置接收发送的位模式，并将接收到的位模式与已知的有效位模式进行比较。 匹配表示PHY设备发送器逻辑的正确操作。

公开(公告)号：US06260167B1

公开(公告)日：2001-07-10

申请号：US09255708

申请日：1999-02-23

Applicant: William Lo ,  Yuhua Huang

Inventor： William Lo ,  Yuhua Huang

IPC: G01R3128

CPC classification number: H04L43/50 ,  H04B17/20

Abstract: A physical layer (PHY) device in an Ethernet type LAN is configured to permit ease of testing of the PHY device's logic. The PHY device comprises a PHY receiver, a start frame delimiter detector (SFD), and automatic checker circuitry in which the clock position and the PHY pop-up position of received signals can be determined. The automatic checker circuitry receives a data signal having a predetermined pattern corresponding to a valid data packet from a pattern generating circuit. The automatic checker circuitry outputs a verification signal indicating whether the supplied signals are valid. This arrangement supports a one pass test, which reduces production costs and testing duration.

Abstract translation: 以太网类型LAN中的物理层（PHY）设备被配置为允许容易地测试PHY设备的逻辑。 PHY设备包括PHY接收器，起始帧定界符检测器（SFD）和自动检测器电路，其中可以确定接收信号的时钟位置和PHY弹出位置。 自动检查电路从模式发生电路接收具有与有效数据分组对应的预定模式的数据信号。 自动检查器电路输出指示所提供的信号是否有效的验证信号。 这种安排支持一次通过测试，这降低了生产成本和测试持续时间。