公开(公告)号：US20100066804A1

公开(公告)日：2010-03-18

申请号：US12561165

申请日：2009-09-16

申请人： Matthew B. Shoemake ,  Nadeem Ahmed

发明人： Matthew B. Shoemake ,  Nadeem Ahmed

IPC分类号： H04N7/14

CPC分类号： H04N7/147 ,  H04L51/04 ,  H04L65/1026 ,  H04L65/1036 ,  H04L65/1059 ,  H04L65/1069 ,  H04L67/104 ,  H04N7/173 ,  H04N21/4143 ,  H04N21/42203 ,  H04N21/4223 ,  H04N21/4788

摘要： Novel tools and techniques for providing video calling solutions. In some such solutions, a video calling device resides functionally inline between a set-top box and a television set. Such solutions can provide, in some cases, high performance video calling, high video quality, simplified installation, configuration and/or use, and/or the ability to enjoy video calling in an inclusive, comfortable environment, such as a family room, den, or media room.

摘要翻译： 提供视频通话解决方案的新型工具和技术。 在一些这样的解决方案中，视频通话装置功能上位于机顶盒和电视机之间。 在某些情况下，这样的解决方案可以提供高性能视频通话，高视频质量，简化的安装，配置和/或使用，和/或在包容性舒适的环境中享受视频通话的能力，例如家庭房，书房 ，或媒体室。

公开(公告)号：US20090180521A1

公开(公告)日：2009-07-16

申请号：US12014035

申请日：2008-01-14

申请人： Brian Chadwick Joseph ,  Sridhar Rajagopal ,  Syed Nadeem Ahmed ,  Yaming Zhang

发明人： Brian Chadwick Joseph ,  Sridhar Rajagopal ,  Syed Nadeem Ahmed ,  Yaming Zhang

IPC分类号： H04B1/707

CPC分类号： H04L5/0007 ,  H04B1/719

摘要： A method, system, and computer-readable medium for detecting an interferer in a wireless communication system are provided. The method includes receiving a signal having P tones, each of the P tones being associated with a frequency, determining a first signal quality of each of the P tones, determining a second signal quality of each of the P tones, and detecting the interferer that occupies the same frequency as one of the P tones based on the respective first signal quality and the respective second signal quality. The first signal quality and second signal quality behave differently when the interferer is present. The detecting the interferer includes determining a discrepancy in the behavior of the first signal quality and the second signal quality.

摘要翻译： 提供了一种用于检测无线通信系统中的干扰源的方法，系统和计算机可读介质。 该方法包括接收具有P个音调的信号，每个P音调与频率相关联，确定每个P音调的第一信号质量，确定每个P音调的第二信号质量，以及检测该干扰信号 基于相应的第一信号质量和相应的第二信号质量，它们占据与P音调之一相同的频率。 当干扰源存在时，第一信号质量和第二信号质量的行为不同。 检测干扰源包括确定第一信号质量和第二信号质量的行为的差异。

公开(公告)号：US07002930B2

公开(公告)日：2006-02-21

申请号：US09999558

申请日：2001-10-19

申请人： Nadeem Ahmed ,  Donald Phillip Shaver ,  Arthur Redfern

发明人： Nadeem Ahmed ,  Donald Phillip Shaver ,  Arthur Redfern

IPC分类号： H04B3/20

CPC分类号： H04L5/006 ,  H04B3/487 ,  H04L5/0007 ,  H04L5/0044 ,  H04L27/2608

摘要： A method of optimally distributing signal power for multiple users over a xDSL or wireless channel considers uses computationally efficient tools to achieve improved crosstalk avoidance. The method chooses between EQPSD and FDS signaling in a fashion that maximizes overall data rate. Rather than choosing EQPSD signaling in regions where there is low self-NEXT, but where the echo is high (relative to signal power), the method selects FDS signaling since the communication system acts in a manner similar to self-NEXT in such regions.

公开(公告)号：US20050047535A1

公开(公告)日：2005-03-03

申请号：US10651157

申请日：2003-08-28

申请人： Nadeem Ahmed ,  Arthur Redfern

发明人： Nadeem Ahmed ,  Arthur Redfern

IPC分类号： H04L1/00 ,  H04L27/26

CPC分类号： H04L27/2602

摘要： System and method for reducing interference to existing devices. A preferred embodiment comprises specifying a frequency range for a set of dummy signals, specifying a clipping function to ensure that the set of dummy signals do not exceed a maximum power constraint, incorporating a least squares solution for computing the set of dummy signals into the clipping function, and iterating the clipping function until a terminating condition is reached. The use of the clipping function limits the magnitude of the dummy signals, to ensure that dummy signals do not exceed a maximum power constraint.

摘要翻译： 减少对现有设备的干扰的系统和方法。 优选实施例包括指定一组虚拟信号的频率范围，指定削波函数以确保该虚拟信号组不超过最大功率约束，并将最小二乘解用于将该虚拟信号集合计算到限幅中 功能，并迭代剪切功能，直到达到终止条件。 削波功能的使用限制了虚拟信号的幅度，以确保虚拟信号不超过最大功率约束。

公开(公告)号：USD648291S1

公开(公告)日：2011-11-08

申请号：US29363356

申请日：2010-06-08

申请人： S. Nadeem Ahmed ,  Francois D. Nguyen ,  Christopher M. Reed ,  Matthew B. Shoemake ,  Craig D. Smith

设计人： S. Nadeem Ahmed ,  Francois D. Nguyen ,  Christopher M. Reed ,  Matthew B. Shoemake ,  Craig D. Smith

公开(公告)号：US20080273614A1

公开(公告)日：2008-11-06

申请号：US12113807

申请日：2008-05-01

申请人： Chris Heegard ,  Syed Nadeem Ahmed ,  Brian Chadwick Joseph

发明人： Chris Heegard ,  Syed Nadeem Ahmed ,  Brian Chadwick Joseph

IPC分类号： H04L27/00

CPC分类号： H04L25/4919 ,  H04L1/0057 ,  H04L1/0071 ,  H04L27/2602 ,  H04L27/34

摘要： A system, method and computer-readable medium for encoding and decoding digital information over a channel is provided. Type Mapping is employed and is based on the partitioning of vectors over an alphabet into “types” and using enumeration for the encoding and decoding process. Type mapping allows for signal alphabets of arbitrary size and date rate flexible coding. Tradeoffs between optimal rate versus Signal to Noise Ratio are provided and works as a compliment to the Forward Error Control that may be employed in communications products.

摘要翻译： 提供了一种用于通过信道对数字信息进行编码和解码的系统，方法和计算机可读介质。 使用类型映射，并且基于将字母上的向量划分为“类型”并使用用于编码和解码过程的枚举。 类型映射允许任意大小和日期速率灵活编码的信号字母。 提供了最佳速率与信噪比之间的权衡，并且可以用作通信产品中可能采用的前向错误控制。

公开(公告)号：US07277513B2

公开(公告)日：2007-10-02

申请号：US10651157

申请日：2003-08-28

申请人： Nadeem Ahmed ,  Arthur John Redfern

发明人： Nadeem Ahmed ,  Arthur John Redfern

IPC分类号： H04B1/10

CPC分类号： H04L27/2602

摘要： System and method for reducing interference to existing devices. A preferred embodiment comprises specifying a frequency range for a set of dummy signals, specifying a clipping function to ensure that the set of dummy signals do not exceed a maximum power constraint, incorporating a least squares solution for computing the set of dummy signals into the clipping function, and iterating the clipping function until a terminating condition is reached. The use of the clipping function limits the magnitude of the dummy signals, to ensure that dummy signals do not exceed a maximum power constraint.

摘要翻译： 减少对现有设备的干扰的系统和方法。 优选实施例包括指定一组虚拟信号的频率范围，指定削波函数以确保该虚拟信号组不超过最大功率约束，并将最小二乘解用于将该虚拟信号集合计算到限幅中 功能，并迭代剪切功能，直到达到终止条件。 削波功能的使用限制了虚拟信号的幅度，以确保虚拟信号不超过最大功率约束。

公开(公告)号：US07190665B2

公开(公告)日：2007-03-13

申请号：US10126150

申请日：2002-04-19

申请人： Nirmal Warke ,  Nadeem Ahmed

发明人： Nirmal Warke ,  Nadeem Ahmed

IPC分类号： H04J1/12

CPC分类号： H04B3/32

摘要： Crosstalk can be cancelled in a composite communication signal (ym) which includes a primary signal component associated with communication data and which also includes a crosstalk signal component produced by applying a crosstalk coupling function to crosstalk data. An estimate (R, RCb(0), RCb(Δf)AVG) of a statistical characteristic of the crosstalk signal component is obtained from the composite communication signal. A cancellation signal (26, 46) is generated based on the statistical characteristic estimate, and an estimate (29) of the communication data is produced based on the composite communication signal and the cancellation signal.

摘要翻译： 可以在包括与通信数据相关联的主信号分量的复合通信信号（> m）中消除串扰，并且还包括通过将串扰耦合功能应用于串扰数据而产生的串扰信号分量。 统计学的估计值（R，R C B（0），R C B（Δ），AVG） 从复合通信信号获得串扰信号分量的特性。 基于统计特性估计产生消除信号（26,46），并且基于复合通信信号和消除信号产生通信数据的估计（29）。

公开(公告)号：US07522657B2

公开(公告)日：2009-04-21

申请号：US10969637

申请日：2004-10-20

申请人： S. Nadeem Ahmed ,  Richard G. Baraniuk

发明人： S. Nadeem Ahmed ,  Richard G. Baraniuk

IPC分类号： H04B1/38 ,  H04L5/16

CPC分类号： H04L1/0009 ,  H04B17/382 ,  H04L1/0015 ,  H04L1/1845 ,  H04L1/1867 ,  H04L25/0222 ,  H04W52/04 ,  H04W52/267

摘要： A communication method comprising characterizing a communications channel, determining a data rate and optionally a power allocation strategy that maximizes channel throughput, and configuring a transmitter to send a transmit signal with said data rate and said optional power allocation strategy.

摘要翻译： 一种通信方法，包括表征通信信道，确定数据速率和可选地使信道吞吐量最大化的功率分配策略，以及配置发射机以发送具有所述数据速率和所述可选功率分配策略的发射信号。

公开(公告)号：US07493153B2

公开(公告)日：2009-02-17

申请号：US10480490

申请日：2001-06-13

申请人： Syed Nadeem Ahmed ,  Ralf Alfons Kockro

发明人： Syed Nadeem Ahmed ,  Ralf Alfons Kockro

IPC分类号： A61B5/00

CPC分类号： G02B27/017 ,  A61B34/20 ,  A61B34/25 ,  A61B90/36 ,  A61B2034/102 ,  A61B2034/2055 ,  A61B2034/2068 ,  A61B2090/365 ,  A61B2090/368 ,  G02B2027/0134 ,  G02B2027/014 ,  G02B2027/0187

摘要： A guide system for use by a user who performs an operation in a defined three-dimensional region is disclosed, the system including a data processing apparatus for generating images of the subject of the operation in co-registration with the subject, a display for displaying the images to the user, a probe having a position which is visible to the user, and a tracking unit for tracking the location of the probe by the system and transmitting that location to the data processing apparatus, the data processing apparatus being arranged, upon the user moving the probe to a selection region outside and surrounding the defined region, to generate one or more virtual buttons, each of the buttons being associated with a corresponding instruction to the system, the data processing apparatus being arranged to register a selection by the user of any of the virtual buttons, the selection including positioning of the probe in relation to the apparent position of that virtual button, and to modify the computer-generated image based on the selection.

摘要翻译： 公开了一种用于在定义的三维区域中执行操作的用户使用的引导系统，该系统包括：用于生成与被摄体共同注册的操作对象的图像的数据处理装置，用于显示的显示 对用户的图像，具有用户可见的位置的探针，以及跟踪单元，用于跟踪系统的探测位置并将该位置发送到数据处理设备，数据处理设备被布置在 所述用户将所述探针移动到所述限定区域外部并围绕所述限定区域的选择区域，以生成一个或多个虚拟按钮，所述按钮中的每一个与对所述系统的相应指令相关联，所述数据处理设备被布置为通过所述 任何虚拟按钮的用户，所述选择包括探针相对于该虚拟按钮的表观位置的定位，以及修改t 他基于选择计算机生成的图像。