利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

49 条记录 (耗时 0.045 秒)

    Error detection in a wireless LAN environment
    1.
    发明授权
    Error detection in a wireless LAN environment 失效
    无线局域网环境中的错误检测

    公开(公告)号：US5745479A

    公开(公告)日：1998-04-28

    申请号：US394378

    申请日：1995-02-24

    申请人： Lawrence M. Burns ,  Scott Mitchell ,  Bruce Kendall

    发明人： Lawrence M. Burns ,  Scott Mitchell ,  Bruce Kendall

    IPC分类号： H04L1/00 ,  H04B17/00

    CPC分类号： H04L1/0083

    摘要： An apparatus for detecting errors in a wireless communication channel comprises a receiver which receives a data stream from the wireless communication channel, a signal strength indication circuit coupled with the receiver which indicates signal strength for a received data stream, and processing resources coupled to the signal strength indication circuit which monitors the received data signal strength to detect anomalies in the strength of the received data stream, typical of erroneous data. Also, the system includes a signal phase monitoring circuit coupled with the receiver. This circuit indicates phase of the received data stream. Processing resources coupled with the signal phase monitoring circuit, monitor the received data stream phase to detect anomalies in phase of the received data stream typical of erroneous data. In addition, the data stream will include data packets having error detection codes imbedded within the data packets. Processing resources coupled with the receiver are responsive to the error detection codes to detect errors in the data packets. Thus, an error detection system based on monitoring the amplitude, and the phase of a received signal, combined with digital CRC detection techniques provides an efficient error detection system, capable of detecting interference early in transmission, allowing more rapid recovery in retries.

    摘要翻译： 用于检测无线通信信道中的错误的装置包括接收来自无线通信信道的数据流的接收机，与接收机耦合的信号强度指示电路，其指示接收到的数据流的信号强度，以及处理与该信号相耦合的资源 强度指示电路，其监视接收的数据信号强度，以检测接收数据流的强度的异常，这是典型的错误数据。 而且，该系统包括与接收器耦合的信号相位监控电路。 该电路指示接收的数据流的相位。 处理与信号相位监控电路相结合的资源，监视接收到的数据流相位，以检测错误数据典型的接收数据流的相位异常。 此外，数据流将包括具有嵌入数据分组内的错误检测码的数据分组。 与接收器耦合的处理资源响应于错误检测码来检测数据分组中的错误。 因此，结合数字CRC检测技术的基于监测振幅和接收信号的相位的误差检测系统提供了能够在传输早期检测干扰的有效的误差检测系统，从而允许更快的恢复恢复。

    Dynamic adjustment to preserve signal-to-noise ratio in a quadrature detector system
    2.
    发明授权
    Dynamic adjustment to preserve signal-to-noise ratio in a quadrature detector system 失效
    动态调整以保持正交检测器系统中的信噪比

    公开(公告)号：US06751272B1

    公开(公告)日：2004-06-15

    申请号：US09022069

    申请日：1998-02-11

    申请人： Lawrence M. Burns ,  Ravi Ramachandran ,  David Fisher ,  Chong Woo ,  Scott Mitchell

    发明人： Lawrence M. Burns ,  Ravi Ramachandran ,  David Fisher ,  Chong Woo ,  Scott Mitchell

    IPC分类号： H03D100

    CPC分类号： H03D3/008 ,  H04L25/063 ,  H04L27/142

    摘要： In a system that demodulates a frequency modulated signal using a quadrature detector circuit, an apparatus that tunes the output signal to compensate for any offset in the signal includes an offset adjustment circuit and a control circuit. The offset adjustment circuit is operably coupled to the control circuit which may consist of a DAC and a digital logic such as a computer CPU. The control circuit determines a correction signal in response to a sequence of sampled of the system output, and supplies the correction signal to the offset adjustment circuit. The offset adjustment circuit provides an offset correction signal in response to the correction signal, and combines the offset correction signal with the output of the quadrature detector to provide an offset adjusted signal at an output node.

    摘要翻译： 在使用正交检波器电路解调频率调制信号的系统中，调谐输出信号以补偿信号中的任何偏移的装置包括偏移调整电路和控制电路。 偏移调整电路可操作地耦合到控制电路，该控制电路可以由DAC和诸如计算机CPU的数字逻辑组成。 控制电路响应于系统输出的采样序列来确定校正信号，并将校正信号提供给偏移调整电路。 偏移调整电路响应于校正信号提供偏移校正信号，并将偏移校正信号与正交检波器的输出组合，以在输出节点处提供偏移调整信号。

    System and method for aggregating and distributing geotagged content
    3.
    发明授权
    System and method for aggregating and distributing geotagged content 有权
    用于聚合和分发地理标记内容的系统和方法

    公开(公告)号：US08655873B2

    公开(公告)日：2014-02-18

    申请号：US13284455

    申请日：2011-10-28

    申请人： Scott Mitchell ,  Philip B. Harris

    发明人： Scott Mitchell ,  Philip B. Harris

    IPC分类号： G06F7/00 ,  G06F17/30

    CPC分类号： H04L67/1097 ,  G06F17/30241 ,  G06Q10/00 ,  G06Q30/02 ,  H04L67/36 ,  H04W4/185

    摘要： A system and method for aggregating and distributing geotagged content comprises a server, a database, and a user interface. A user accesses the user interface to identify a spatial area and request content from a plurality of content providers that is geotagged with a location within the identified spatial area. The user interface may be on a webpage.

    摘要翻译： 用于聚合和分发地理标记内容的系统和方法包括服务器，数据库和用户界面。 用户访问用户界面以识别空间区域并且从与所识别的空间区域内的位置进行地理标记的多个内容提供商请求内容。 用户界面可能位于网页上。

    Heteroaryl substituted fused bicyclic heteroaryl compounds as GABAA receptor ligands
    10.
    发明申请
    Heteroaryl substituted fused bicyclic heteroaryl compounds as GABAA receptor ligands 审中-公开
    杂芳基取代的稠合双环杂芳基化合物作为GABA A受体配体

    公开(公告)号：US20060014746A1

    公开(公告)日：2006-01-19

    申请号：US11214345

    申请日：2005-08-29

    申请人： Alan Hutchison ,  George Maynard ,  Pamela Albaugh ,  Linghong Xie ,  Jun Yuan ,  Scott Mitchell ,  Vinod Singh ,  Manuka Ghosh ,  Guiying Li ,  Nian Liu

    发明人： Alan Hutchison ,  George Maynard ,  Pamela Albaugh ,  Linghong Xie ,  Jun Yuan ,  Scott Mitchell ,  Vinod Singh ,  Manuka Ghosh ,  Guiying Li ,  Nian Liu

    IPC分类号： C07D487/04 ,  C07D471/02 ,  A61K31/519 ,  A61K31/503 ,  A61K31/4745

    CPC分类号： C07D487/04 ,  C07D471/04 ,  C07D513/04

    摘要： This invention relates to heteroaryl substituted fused bicyclic heteroaryl compounds, such as heteroaryl substituted imidazopyridines, imidazopyrazines, imidazopyridizines, imidazopyrimidines, and imidazothiazoles, which may be described by Formula I or Formula II: The invention is particularly related to such compounds that bind with high selectivity and high affinity to the benzodiazepine site of GABAA receptors. This invention also relates to pharmaceutical compositions comprising such compounds and to the use of such compounds in treatment of certain central nervous system (CNS) diseases. Processes for preparing compounds of Formula I and Formula II are disclosed. This invention also relates to the use of benzimidazoles, pyridylimidazoles and related bicyclic heteroaryl compounds of Formula I or Formula II in combination with one or more other CNS agents to potentiate the effects of the other CNS agents. Additionally this invention relates to the use such compounds as probes for the localization of GABAA receptors in tissue sections.

    摘要翻译： 本发明涉及可以由式I或式II描述的杂芳基取代的稠合双环杂芳基化合物，例如杂芳基取代的咪唑并吡啶，咪唑并吡嗪，咪唑并吡啶，咪唑并嘧啶和咪唑并噻唑。本发明特别涉及以高选择性结合的这些化合物 并且对GABA A A受体的苯并二氮杂位点具有高亲和力。 本发明还涉及包含这些化合物的药物组合物以及这些化合物在治疗某些中枢神经系统（CNS）疾病中的用途。 公开了制备式I和式II化合物的方法。 本发明还涉及式I或式II的苯并咪唑，吡啶基咪唑和相关双环杂芳基化合物与一种或多种其它CNS剂的组合用于增强其它CNS剂的作用。 此外，本发明涉及使用这些化合物作为组织切片中GABA A A受体定位的探针。