公开(公告)号：US09598242B2

公开(公告)日：2017-03-21

申请号：US14606312

申请日：2015-01-27

Applicant: Mark Webster ,  David Konopacki ,  Michael Reilly

Inventor： Mark Webster ,  David Konopacki ,  Michael Reilly

IPC: B65G35/06 ,  B65G37/02

CPC classification number: B65G37/02 ,  B65G35/06

Abstract: A moving floor system that includes a moving work surface to move work products from an upstream end to a downstream end. The moving work surface is formed from a plurality of individual carts joined to each other. The stack of carts is moved along upper support rails located at an upper level. When each individual cart reaches the downstream end, a downstream lift conveyor moves the individual cart from the upper level to a lower level. When at the lower level, each individual cart is returned from the downstream end to the upstream end. When each individual cart reaches the upstream end, an upstream lift conveyor returns the individual carts from the lower level to the upper level. An upper drive mechanism provides the motive force to move the stack of carts along the upper level at the working speed.

公开(公告)号：US08520984B2

公开(公告)日：2013-08-27

申请号：US12781471

申请日：2010-05-17

Applicant: Mark Webster ,  Russell Romano ,  Kalpendu Shastri

Inventor： Mark Webster ,  Russell Romano ,  Kalpendu Shastri

IPC: G02F1/035

CPC classification number: G02F1/2257 ,  G02F2203/20 ,  G02F2203/25

Abstract: A silicon-based optical modulator exhibiting improved modulation efficiency and control of “chirp” (i.e., time-varying optical phase) is provided by separately biasing a selected, first region of the modulating device (e.g., the polysilicon region, defined as the common node). In particular, the common node is biased to shift the voltage swing of the silicon-based optical modulator into its accumulation region, which exhibits a larger change in phase as a function of applied voltage (larger OMA) and improved extinction ratio. The response in the accumulation region is also relatively linear, allowing for the chirp to be more easily controlled. The electrical modulation input signal (and its inverse) are applied as separate inputs to the second region (e.g., the SOI region) of each arm of the modulator.

Abstract translation: 通过分别偏置调制装置的选定的第一区域（例如，定义为共同的多晶硅区域）来提供显示出改善的调制效率和“啁啾”（即，时变光学相位）的控制的硅基光学调制器 节点）。 特别地，公共节点被偏置以将硅基光调制器的电压摆幅移动到其累积区域中，其随着施加电压（较大的OMA）和改善的消光比而呈现较大的相位变化。 积聚区域中的响应也是相对线性的，从而可以更容易地控制啁啾声。 电调制输入信号（及其反相）作为分离的输入施加到调制器的每个臂的第二区域（例如，SOI区域）。

公开(公告)号：US20120279806A1

公开(公告)日：2012-11-08

申请号：US13464373

申请日：2012-05-04

Applicant: Mark Webster

Inventor： Mark Webster

IPC: B66B5/02

CPC classification number: B66B1/06

Abstract: A method and system for controlling the operation of a drive motor for a vertical reciprocating conveyor. The method initially activates a drive motor to move a carriage from a resting position. After initial start-up period, the method sets a threshold current value as the present current value being drawn by the drive motor. The method compares subsequent present current value measurements to the threshold current value and determines whether the present current value exceeds or falls below the threshold current value by more than an operating limit. If the present current value falls within the operating limits, the threshold current value is updated to the present current value on a periodic basis. In this manner, the method continuously updates the threshold current value to compensate for an increase in the weight being lifted by the vertical reciprocating conveyor.

Abstract translation: 一种用于控制用于垂直往复式输送机的驱动马达的操作的方法和系统。 该方法最初激活驱动马达以使托架从静止位置移动。 在初始启动时间之后，该方法将阈值电流值设置为由驱动电动机画出的当前值。 该方法将随后的当前值测量值与阈值电流值进行比较，并确定当前电流值是否超过或低于阈值电流值超过操作极限。 如果当前电流值落在运行极限内，则周期性地将阈值电流值更新为当前电流值。 以这种方式，该方法不断更新阈值电流值以补偿由垂直往复式输送机提升的重量的增加。

公开(公告)号：US08031991B2

公开(公告)日：2011-10-04

申请号：US12454963

申请日：2009-05-27

Applicant: Mark Webster ,  Vipulkumar Patel

Inventor： Mark Webster ,  Vipulkumar Patel

IPC: G02B6/26 ,  G02B6/42

CPC classification number: G02B6/1228

Abstract: An optical coupler is formed of a low index material and exhibits a mode field diameter suitable to provide efficient coupling between a free space optical signal (of large mode field diameter) and a single mode high index waveguide formed on an optical substrate. One embodiment comprises an antiresonant reflecting optical waveguide (ARROW) structure in conjunction with an embedded (high index) nanotaper coupling waveguide. Another embodiment utilizes a low index waveguide structure disposed in an overlapped arrangement with a high index nanotaper coupling waveguide. The low index waveguide itself includes a tapered region that overlies the nanotaper coupling waveguide to facilitate the transfer of the optical energy from the low index waveguide into an associated single mode high index waveguide. Methods of forming these devices using CMOS processes are also disclosed.

Abstract translation: 光耦合器由低折射率材料形成，并且具有适于提供在大尺寸场直径的自由空间光信号和形成在光学基片上的单模高折射率波导之间的有效耦合的模场直径。 一个实施例包括结合嵌入式（高折射率）纳米锥耦合波导的反谐振反射光波导（ARROW）结构。 另一实施例利用与高折射率纳米锥耦合波导重叠布置设置的低折射率波导结构。 低折射率波导本身包括覆盖在纳米锥耦合波导上的锥形区域，以便将光能量从低折射率波导传输到相关联的单模高折射率波导中。 还公开了使用CMOS工艺形成这些器件的方法。

公开(公告)号：US20110222812A1

公开(公告)日：2011-09-15

申请号：US13029342

申请日：2011-02-17

Applicant: Mark Webster ,  Vipulkumar Patel ,  Prakash Gothoskar ,  David Piede

Inventor： Mark Webster ,  Vipulkumar Patel ,  Prakash Gothoskar ,  David Piede

IPC: G02F1/01

CPC classification number: G02B6/12 ,  G02B6/26 ,  G02B26/00 ,  G02F1/025

Abstract: A high speed silicon-based optical modulator with control of the dopant profiles in the body and gate regions of the device reduces the series resistance of the structure without incurring substantial optical power loss. That is, the use of increased dopant values in areas beyond the active region will allow for the series resistance to be reduced (and thus increase the modulating speed of the device) without incurring too large a penalty in signal loss. The dopant profiles within the gate and body regions are tailored to exhibit an intermediate value between the high dopant concentration in the contact areas and the low dopant concentration in the carrier integration window area.

Abstract translation: 具有控制器件的主体和栅极区域中的掺杂剂分布的高速硅基光学调制器降低了结构的串联电阻而不会引起实质的光功率损耗。 也就是说，在有源区域之外的区域中使用增加的掺杂剂值将允许降低串联电阻（从而增加器件的调制速度），而不会在信号损失中造成太大的惩罚。 调整栅极和体区内的掺杂剂分布，以显示接触区域中的高掺杂剂浓度与载流子集成窗口区域中的低掺杂剂浓度之间的中间值。

公开(公告)号：US07668258B2

公开(公告)日：2010-02-23

申请号：US11411619

申请日：2006-04-26

Applicant: Mark Webster ,  Deniz Rende ,  Jim Petranovich

Inventor： Mark Webster ,  Deniz Rende ,  Jim Petranovich

IPC: H03C3/00

CPC classification number: H04B7/0697 ,  H04B7/0671 ,  H04B7/0691

Abstract: Methods and systems for transmitter diversity expansion are provided. The methods and systems include steps and modules for applying a number of data streams (K) to a larger number of antennas (N). This is performed by applying each of the data streams to a single base antenna, such that K data streams are applied to K base antennas, and by shifting and combining the K data streams to produce N-K data streams to apply to N-K extension antennas.

Abstract translation: 提供了发射机分集扩展的方法和系统。 所述方法和系统包括用于将数个数据流（K）应用于更大数量的天线（N）的步骤和模块。 这通过将每个数据流应用于单个基本天线来执行，使得K个数据流被应用于K个基本天线，并且通过移位和组合K个数据流以产生应用于N-K个扩展天线的N-K个数据流。

公开(公告)号：US20090297093A1

公开(公告)日：2009-12-03

申请号：US12454963

申请日：2009-05-27

Applicant: Mark Webster ,  Vipulkumar Patel

Inventor： Mark Webster ,  Vipulkumar Patel

IPC: G02B6/12 ,  G02B6/26

CPC classification number: G02B6/1228

Abstract: An optical coupler is formed of a low index material and exhibits a mode field diameter suitable to provide efficient coupling between a free space optical signal (of large mode field diameter) and a single mode high index waveguide formed on an optical substrate. One embodiment comprises an antiresonant reflecting optical waveguide (ARROW) structure in conjunction with an embedded (high index) nanotaper coupling waveguide. Another embodiment utilizes a low index waveguide structure disposed in an overlapped arrangement with a high index nanotaper coupling waveguide. The low index waveguide itself includes a tapered region that overlies the nanotaper coupling waveguide to facilitate the transfer of the optical energy from the low index waveguide into an associated single mode high index waveguide. Methods of forming these devices using CMOS processes are also disclosed.

Abstract translation: 光耦合器由低折射率材料形成，并且具有适合于提供在大尺寸场直径的自由空间光信号和形成在光学基片上的单模高折射率波导之间的有效耦合的模场直径。 一个实施例包括结合嵌入式（高折射率）纳米锥耦合波导的反谐振反射光波导（ARROW）结构。 另一实施例利用与高折射率纳米锥耦合波导重叠布置设置的低折射率波导结构。 低折射率波导本身包括覆盖在纳米锥耦合波导上的锥形区域，以便将光能量从低折射率波导传输到相关联的单模高折射率波导中。 还公开了使用CMOS工艺形成这些器件的方法。

公开(公告)号：US20090103850A1

公开(公告)日：2009-04-23

申请号：US12287366

申请日：2008-10-08

Applicant: Kaipendu Shastri ,  Prakash Gothoskar ,  Vipulkumar Patel ,  David Piede ,  Mark Webster

Inventor： Kaipendu Shastri ,  Prakash Gothoskar ,  Vipulkumar Patel ,  David Piede ,  Mark Webster

IPC: G02F1/035

CPC classification number: G02F1/0121 ,  G02F1/2255 ,  G02F1/2257 ,  G02F2001/0152

Abstract: A silicon-insulator-silicon capacitive (SISCAP) optical modulator is configured to provide analog operation for applications which previously required the use of relatively large, power-consuming and expensive lithium niobate devices. An MZI-based SISCAP modulator (preferably a balanced arrangement with a SISCAP device on each arm) is responsive to an incoming high frequency electrical signal and is biased in a region where the capacitance of the device is essentially constant and the transform function of the MZI is linear.

Abstract translation: 硅 - 绝缘体 - 硅电容（SISCAP）光调制器被配置为为先前需要使用相对较大，耗电和昂贵的铌酸锂器件的应用提供模拟操作。 基于MZI的SISCAP调制器（优选地，在每个臂上具有SISCAP器件的平衡布置）响应于输入的高频电信号，并且被偏置在器件的电容基本上恒定的区域中，并且MZI的变换函数 是线性的

公开(公告)号：US20070297382A1

公开(公告)日：2007-12-27

申请号：US11849579

申请日：2007-09-04

Applicant: Mark Webster ,  Steven Halford ,  Richard Roberts

Inventor： Mark Webster ,  Steven Halford ,  Richard Roberts

IPC: H04L27/14 ,  H04B7/216 ,  H04Q7/16 ,  H04J9/00

CPC classification number: H04L27/2602 ,  H04L27/0008 ,  H04W84/12 ,  H04W88/06 ,  H04W92/02

Abstract: A dual packet configuration for wireless communications including a first portion that is modulated according to a serial modulation and a second portion that is modulated according to a parallel modulation. The serial modulation may be DSSS whereas the parallel modulation may be OFDM. The first portion may include a header, which may further include an OFDM mode bit and a length field indicating the duration the second portion. The first portion may be in accordance with 802.11b to enable dual mode devices to coexist and communicate in the same area as standard 802.11b devices. The dual mode devices can communicate at different or higher data rates without interruption from the 802.11b devices. The packet configuration may include an OFDM signal symbol which further includes a data rate section and a data count section. In this manner, data rates the same as or similar to the 802.11a data rates may be specified between dual mode devices. The first and second portions may be based on the same or different clock fundamentals. For OFDM, the number of subcarriers, pilot tones and guard interval samples may be modified independently or in combination to achieve various embodiments. Also, data subcarriers may be discarded and replaced with pilot tones for transmission. The receiver regenerates the discarded data based on received data, such as using ECC techniques.

Abstract translation: 一种用于无线通信的双包配置，包括根据串行调制被调制的第一部分和根据并行调制被调制的第二部分。 串行调制可以是DSSS，而并行调制可以是OFDM。 第一部分可以包括报头，报头还可以包括OFDM模式位和指示第二部分的持续时间的长度字段。 第一部分可以符合802.11b，以使得双模式设备能够在与标准802.11b设备相同的区域中共存和通信。 双模设备可以以不同或更高的数据速率进行通信，而不会中断802.11b设备。 分组配置可以包括还包括数据速率部分和数据计数部分的OFDM信号符号。 以这种方式，可以在双模式设备之间指定与802.11a数据速率相同或类似的数据速率。 第一和第二部分可以基于相同或不同的时钟基本原理。 对于OFDM，可以独立地或组合地修改子载波数，导频音和保护间隔样本的数量以实现各种实施例。 此外，可以丢弃数据副载波并用导频音来代替传输。 接收机基于接收的数据（例如使用ECC技术）重新生成丢弃的数据。

公开(公告)号：US20060270353A1

公开(公告)日：2006-11-30

申请号：US11411619

申请日：2006-04-26

Applicant: Mark Webster ,  Deniz Rende ,  Jim Petranovich

Inventor： Mark Webster ,  Deniz Rende ,  Jim Petranovich

IPC: H04B1/00

CPC classification number: H04B7/0697 ,  H04B7/0671 ,  H04B7/0691

Abstract: Methods and systems for transmitter diversity expansion are provided. The methods and systems include steps and modules for applying a number of data streams (K) to a larger number of antennas (N). This is performed by applying each of the data streams to a single base antenna, such that K data streams are applied to K base antennas, and by shifting and combining the K data streams to produce N-K data streams to apply to N-K extension antennas.

Abstract translation: 提供了发射机分集扩展的方法和系统。 所述方法和系统包括用于将数个数据流（K）应用于更大数量的天线（N）的步骤和模块。 这通过将每个数据流应用于单个基本天线来执行，使得K个数据流被应用于K个基本天线，并且通过移位和组合K个数据流以产生应用于N-K个扩展天线的N-K个数据流。