公开(公告)号：US08032032B2

公开(公告)日：2011-10-04

申请号：US12291970

申请日：2008-11-14

Applicant: Naresh Chand ,  Kevin M. McNeill

Inventor： Naresh Chand ,  Kevin M. McNeill

IPC: H04B10/00

CPC classification number: H04B10/27 ,  H04B10/2503 ,  H04B10/2587 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0267 ,  H04J14/0268 ,  H04J14/0276 ,  H04J14/0282 ,  H04J14/0295 ,  H04J14/0297 ,  H04J14/0298 ,  H04J2014/0253 ,  H04Q11/0062 ,  H04Q2011/009

Abstract: A fiber optic link for platforms with data sources including, e.g., sensors, cameras, radars and antennas. An array of optical transmitter/receiver pairs is coupled to an integrating network of the platform. Data modules are each coupled to certain ones of the data sources and include a receiver for detecting control data, and a modulator for modulating a light signal according to signals from the module's data sources. At least one optical fiber is coupled between a given transmitter/receiver pair of the array, and a corresponding data module. A laser source associated with each transmitter supplies a light signal with the control data to a corresponding data module downstream over an optical fiber. The light signal is modulated by the signals from the module's data sources, and the modulated light signal is returned to an array receiver upstream over an optical fiber.

Abstract translation: 具有数据源的平台的光纤链路，包括例如传感器，照相机，雷达和天线。 一组光发射机/接收机对耦合到该平台的集成网络。 数据模块各自耦合到某些数据源，并且包括用于检测控制数据的接收器，以及用于根据来自模块数据源的信号调制光信号的调制器。 至少一个光纤耦合在阵列的给定发射机/接收机对与相应的数据模块之间。 与每个发射器相关联的激光源将控制数据的光信号提供给光纤上的相应数据模块。 光信号由来自模块数据源的信号调制，调制光信号通过光纤返回到阵列接收器上游。

公开(公告)号：US20070153772A1

公开(公告)日：2007-07-05

申请号：US11327532

申请日：2006-01-05

Applicant: Shiva Shankar J ,  Ottalingam Satyanarayan ,  Srinivas Muktevi ,  Naresh Chand

Inventor： Shiva Shankar J ,  Ottalingam Satyanarayan ,  Srinivas Muktevi ,  Naresh Chand

IPC: H04L12/66

CPC classification number: H04L65/80 ,  H04L43/0829 ,  H04L43/0852 ,  H04L43/0858 ,  H04L43/087 ,  H04L43/106 ,  H04L43/12

Abstract: A method, system and apparatus are provided for measuring the quality of voice (QOV) in a communication network. A time-stamped voice data packet is received. The time stamped on the voice data packet indicates the time at which the voice data packet arrives at intermediate devices. In an embodiment of the invention, the intermediate devices at each hop stamp the time. Thereafter, the voice data packets are analyzed to measure the quality of voice in the communication network.

Abstract translation: 提供了一种用于测量通信网络中的语音质量（QOV）的方法，系统和装置。 接收时间戳的语音数据分组。 语音数据分组上的时间戳表示语音数据分组到达中间设备的时间。 在本发明的一个实施例中，每一跳的中间装置标记时间。 此后，分析语音数据分组以测量通信网络中的语音质量。

公开(公告)号：US07068936B2

公开(公告)日：2006-06-27

申请号：US10161335

申请日：2002-06-03

Applicant: Stanley Pau ,  Jianjun Yu ,  Keisuke Kojima ,  Naresh Chand

Inventor： Stanley Pau ,  Jianjun Yu ,  Keisuke Kojima ,  Naresh Chand

IPC: H04J14/00

CPC classification number: H04J14/086 ,  H04J14/02 ,  H04J14/08 ,  H04Q11/0005 ,  H04Q2011/0011 ,  H04Q2011/0016 ,  H04Q2011/002 ,  H04Q2011/0024 ,  H04Q2011/0033 ,  H04Q2011/0045

Abstract: Methods and apparatus for providing a time slot switch which performs switching in the optical domain without the need for O-E-O conversion is described. The time slot switching device of the present invention may be part of a large switching device capable of performing switching and other function on WDM, TDM and WDM signals which are time division multiplexed. An optical time slot switch implemented using a time slot demultiplexer, optical cross-connect, variable delay lines and time slot multiplexer are described. Frequency conversion may be performed on a per time slot basis in cases where time slot signals are switched between lines using different wavelengths. Wave division demultiplexers and multiplexers can be added to the basic time slot switch to provide support for WDM switching and switching of TDM signals which are transmitted using wave division multiplexing.

Abstract translation: 描述了提供在光域中进行切换而不需要O-E-O转换的时隙切换的方法和装置。 本发明的时隙切换装置可以是对时分复用的WDM，TDM和WDM信号进行切换等功能的大型交换装置的一部分。 描述了使用时隙解复用器，光交叉连接，可变延迟线和时隙多路复用器实现的光时隙交换机。 在使用不同波长的线路之间切换时隙信号的情况下，可以在每个时隙的基础上执行频率转换。 波分复用器和多路复用器可以添加到基本时隙交换机中，以支持使用波分复用传输的TDM信号的WDM交换和交换。

公开(公告)号：US4977103A

公开(公告)日：1990-12-11

申请号：US398115

申请日：1989-08-24

Applicant: Naresh Chand

Inventor： Naresh Chand

IPC: H01L21/203 ,  C30B23/02 ,  C30B23/06 ,  C30B23/08

CPC classification number: C30B23/02 ,  C30B23/066 ,  Y10S148/024 ,  Y10S148/097 ,  Y10S148/169

Abstract: The presence of oval defects on MBE-grown compound semiconductor (e.g., GaAs, InP, or InGaAs) epitaxial layers has proven to be a serious obstacle to the use of such material for the manufacture of integrated circuits (ICs), even though the use of such material potentially could result in ICs having superior performance. One particularly prevalent type of oval defect is generally referred to as .alpha.-type. It has now been discovered that compound semiconductor epitaxial layers that are essentially free of .alpha.-type oval defects can be grown by MBE if first at least a portion of the Ga and/or In metal crucible is coated with an appropriate second metal. The second metal is chosen from the group of metals that are wetted by the first metal and that are less electronegative than the first metal. Aluminum is a currently preferred second metal. Advantageously the interior of the (typically pBN) crucible is Al-coated at least at and near the orifice of the crucible, whereby formation of drops of first metal is prevented.