利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

22 条记录 (耗时 0.016 秒)

    Ghost cancellation of analog TV signals
    2.
    发明授权
    Ghost cancellation of analog TV signals 失效
    GHOST取消模拟电视信号

    公开(公告)号：US5119196A

    公开(公告)日：1992-06-02

    申请号：US542612

    申请日：1990-06-25

    申请人： Ender Ayanoglu ,  Israel Bar-David ,  Richard D. Gitlin ,  Chih-Lin I ,  Jack H. Winters

    发明人： Ender Ayanoglu ,  Israel Bar-David ,  Richard D. Gitlin ,  Chih-Lin I ,  Jack H. Winters

    IPC分类号： H04N5/21

    CPC分类号： H04N5/211

    摘要： Ghosts are canceled in received analog TV (for IDTV, EDTV, and HDTV) signals by utilizing the fact that there are short periods of time without the analog signals (the horizontal flyback interval between the lines) to process the received signal on a line-to-line basis using a finite impulse response (FIR) or an infinite impulse response (IIR) equalizer. This line-by-line processing (which can be implemented by periodic cleansing of the equalizer) overcomes the limitations of standard equalizers to allow for 40-50 dB of suppression of ghosts, even with nulls in the spectrum, as long as the ghost delay is less than the period of time without the analog signal. Furthermore, by using time inversion in combination with line-by-line processing, the stability problem of the conventional IIR equalizer is eliminated. The IIR equalizer may be implemented on a single digital integrated circuit. Alternatively, an FIR equalizer can be used which, although it may require multiple chips (i.e., more taps), can acquire and adapt to the ghosted channel more rapidly than an IIR equalizer. With line-by-line processing, FIR and IIR equalizers can eliminate any ghost with delays up to 11 .mu.sec in IDTV or EDTV. For larger delays, a standard IIR or FIR equalizer can be used as a preprocessor to eliminate small ghosts and an adaptive antenna can be used to eliminate large ghosts. Thus, with these techniques, the ghosting problem can be eliminated in all TV receivers.

    WDM optical communications networks and methods for provisioning
    5.
    发明授权
    WDM optical communications networks and methods for provisioning 失效
    WDM光通信网络和配置方法

    公开(公告)号：US06304349B1

    公开(公告)日：2001-10-16

    申请号：US09109250

    申请日：1998-06-30

    申请人： Murat Alanyali ,  Ender Ayanoglu

    发明人： Murat Alanyali ,  Ender Ayanoglu

    IPC分类号： H04B1000

    CPC分类号： H04Q11/0062 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0284 ,  H04Q2011/0039 ,  H04Q2011/0073 ,  H04Q2011/0086

    摘要： Methods for provisioning optical communications networks employing wavelength division multiplexing (WDM) technology provide for routing and wave-length assignment of a set of connection requests. Avoiding many of the pitfalls of exactly optimum solutions, the present heuristic methods provide much shorter execution times while providing near-optimum performance. Adaptations of the basic solutions provide design of restorable networks capable of handling a specified set of failures. This approach advantageously is based on considering all failures simultaneously, and performs better than solutions in which independent designs are developed for each failure. Networks designed using these methods store configuration information for primary network configurations and for one or more restoration networks. Upon startup or upon network failures, predetermined configuration directions are applied to wavelength selective cross-connects (WSXC) at each network node to establish (or reestablish) desired network node interconnections.

    摘要翻译： 提供使用波分复用（WDM）技术的光通信网络的方法提供一组连接请求的路由和波长分配。 避免许多精确解决方案的缺陷，目前的启发式方法提供了更短的执行时间，同时提供了近乎最佳的性能。 基本解决方案的修改提供了能够处理指定故障集的可恢复网络的设计。 该方法有利地基于同时考虑所有故障，并且比对于每个故障开发独立设计的解决方案更好。 使用这些方法设计的网络存储用于主要网络配置和一个或多个恢复网络的配置信息。 在启动或网络故障时，将预定的配置方向应用于每个网络节点处的波长选择性交叉连接（WSXC），以建立（或重新建立）期望的网络节点互连。

    Method and apparatus for transmitting packetized data over a common communications channel
    6.
    发明授权
    Method and apparatus for transmitting packetized data over a common communications channel 失效
    用于通过公共通信信道发送分组化数据的方法和装置

    公开(公告)号：US6014385A

    公开(公告)日：2000-01-11

    申请号：US781968

    申请日：1996-12-28

    申请人： Ender Ayanoglu ,  Kai Yin Eng ,  Mark John Karol

    发明人： Ender Ayanoglu ,  Kai Yin Eng ,  Mark John Karol

    IPC分类号： H04J3/16 ,  H04L12/28 ,  H04L12/403 ,  H04L12/56 ,  H04Q3/00 ,  H04Q11/04

    CPC分类号： H04L12/417 ,  H04L12/5602 ,  H04L2012/5672 ,  H04L2012/5679

    摘要： A telecommunications system capable of transmitting an N byte packet over a common communications channel by: temporally dividing the common communications channel into time slots that have a duration equal to ##EQU1## seconds, where i is a natural number greater than one, C is a constant and R is the transmission rate of the common communications channel in bytes per second; splitting the N byte packet into i p-packets; preparing an M byte training sequence; and transmitting the M byte training sequence and the p-packets over the common communications channel in consecutive time slots.

    摘要翻译： 一种电信系统，其能够通过以下方式在公共通信信道上传输N字节分组：将公共通信信道暂时划分为具有等于秒的持续时间的时隙，其中i是大于1的自然数，C是常数，并且R 是公共通信信道的传输速率，单位为字节/秒; 将N字节分组分解成i个p分组; 准备一个M字节训练序列; 并且在连续的时隙中通过公共通信信道发送M字节训练序列和p分组。

    Media access control for MIMO wireless network
    7.
    发明授权
    Media access control for MIMO wireless network 有权
    MIMO无线网络的媒体访问控制

    公开(公告)号：US07929412B1

    公开(公告)日：2011-04-19

    申请号：US11974848

    申请日：2007-10-16

    申请人： Ozgur Gurbuz ,  David Pignatelli ,  David Stephenson ,  Eldad Perahia ,  Bretton Douglas ,  Ender Ayanoglu

    发明人： Ozgur Gurbuz ,  David Pignatelli ,  David Stephenson ,  Eldad Perahia ,  Bretton Douglas ,  Ender Ayanoglu

    IPC分类号： H04J11/00 ,  H04L1/02 ,  H04J3/16

    CPC分类号： H04B7/0689 ,  H04B7/0413 ,  H04B7/0628 ,  H04B7/0871 ,  H04W28/22 ,  H04W84/12

    摘要： An apparatus and method for operating a Multiple Input Multiple Output (MIMO)-capable subscriber node are disclosed. In one embodiment, an apparatus includes a MIMO-capable physical layer transceiver and a Medium Access Control (MAC) layer block that measures a received transmission to determine channel conditions. Upon receiving a transmission wherein said channel conditions meet specified conditions, the MAC layer block requests an access point for permission to switch between a non-MIMO mode and a MIMO mode, and upon receiving permission, the MAC layer block switches between the non-MIMO mode and the MIMO mode. An apparatus for operating an access node is also disclosed.

    摘要翻译： 公开了一种用于操作多输入多输出（MIMO）能力的用户节点的装置和方法。 在一个实施例中，一种装置包括MIMO能力的物理层收发机和媒体接入控制（MAC）层块，其测量接收到的传输以确定信道状况。 在接收到其中所述信道条件满足指定条件的传输时，MAC层块请求接入点以允许在非MIMO模式和MIMO模式之间切换，并且在接收到许可后，MAC层块在非MIMO 模式和MIMO模式。 还公开了一种用于操作接入节点的装置。

    Point-to-point MAC protocol for high speed wireless bridging
    8.
    发明授权
    Point-to-point MAC protocol for high speed wireless bridging 有权
    用于高速无线桥接的点到点MAC协议

    公开(公告)号：US07567537B1

    公开(公告)日：2009-07-28

    申请号：US10207694

    申请日：2002-07-29

    申请人： Ozgur Gurbuz ,  Ender Ayanoglu ,  Robert Meier

    发明人： Ozgur Gurbuz ,  Ender Ayanoglu ,  Robert Meier

    IPC分类号： H04Q7/24 ,  H04L12/413

    CPC分类号： H04L12/413

    摘要： Systems and methods for improving throughput in point-to-point wireless communication links are provided. In one particular implementation, a media access control (MAC) layer of the IEEE 802.11 standard is enhanced for use in point-to-point links to take advantage of the limited number of nodes participating in the link. In one embodiment, a master/slave type protocol provides contention free operation between two wireless nodes. Multiple priority levels and voice traffic may be accommodated with guaranteed Quality of Service.

    摘要翻译： 提供了用于提高点对点无线通信链路中吞吐量的系统和方法。 在一个特定实现中，IEEE 802.11标准的媒体接入控制（MAC）层被增强以用于点对点链路以利用参与链路的有限数量的节点。 在一个实施例中，主/从类型协议在两个无线节点之间提供无竞争的操作。 可以在保证服务质量的情况下容纳多个优先级和语音流量。

    Navigation system for an automotive vehicle
    10.
    发明授权
    Navigation system for an automotive vehicle 失效
    汽车导航系统

    公开(公告)号：US5689252A

    公开(公告)日：1997-11-18

    申请号：US612203

    申请日：1996-03-07

    申请人： Ender Ayanoglu ,  Krishan Kumar Sabnani

    发明人： Ender Ayanoglu ,  Krishan Kumar Sabnani

    IPC分类号： G09B29/00 ,  G01C21/00 ,  G01C21/34 ,  G01S19/48 ,  G08G1/00 ,  G08G1/09 ,  G08G1/0969 ,  G08G1/123

    CPC分类号： G01C21/3492 ,  G08G1/0969

    摘要： A navigation system for an automotive vehicle designed to display a road map image around the vehicle in correlation with the current position of the automotive vehicle. The navigation system is adapted to determine a best navigation route to a selected destination on the basis on the approximated time necessary to travel such a navigation route in correspondence to its travel length and speed rate.

    摘要翻译： 一种用于机动车辆的导航系统，其被设计成与机动车辆的当前位置相关地显示车辆周围的路线图。 导航系统适于根据其行进长度和速度速率，根据行进该导航路线所需的近似时间，确定到所选择的目的地的最佳导航路线。