利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

203 条记录 (耗时 0.031 秒)

    Communication device
    4.
    发明专利
    Communication device 有权
    通信设备

    公开(公告)号：JP2014120863A

    公开(公告)日：2014-06-30

    申请号：JP2012273560

    申请日：2012-12-14

    申请人： Sony Corp ,  ソニー株式会社

    发明人： HOCHI TAKU

    IPC分类号： H04B1/7075

    CPC分类号： H04B1/709 ,  H04B1/7075 ,  H04B2201/70715 ,  H04B2201/70728

    摘要： PROBLEM TO BE SOLVED: To improve accuracy of synchronization acquisition of reception signals from an artificial satellite such as a GPS satellite, with a simple configuration.SOLUTION: A Doppler shift amount calculation unit calculates a Doppler shift amount of a reception signal from an artificial satellite. A sampling interval setting unit sets a sampling interval for downsampling an A/D converted reception signal on the basis of the calculated Doppler shift amount. A downsampling unit downsamples the A/D converted reception signal by using the set sampling interval. A coherent addition unit performs coherent addition on the downsampled reception signal. A PN generation unit generates a spread code. A phase detection unit performs correlation operation between an operation result of the coherent addition and the generated spread code, and detects a phase of the spread code of the reception signal on the basis of a result of the correlation operation. The technology can be applied to a GPS receiver, for example.

    摘要翻译： 要解决的问题：以简单的配置提高来自诸如GPS卫星的人造卫星的接收信号的同步捕获的精度。解调：多普勒频移量计算单元计算来自人造卫星的接收信号的多普勒频移量 。 采样间隔设定单元基于计算出的多普勒频移量设定用于对A / D转换的接收信号进行下采样的采样间隔。 下采样单元使用设定的采样间隔对A / D转换的接收信号进行下采样。 相干相加单元对下采样的接收信号执行相干相加。 PN生成单元生成扩展码。 相位检测单元执行相干相加的运算结果与生成的扩展码之间的相关运算，并根据相关运算的结果来检测接收信号的扩展码的相位。 例如，该技术可以应用于GPS接收机。

    Receive diversity in gnss receivers
    5.
    发明专利
    Receive diversity in gnss receivers 有权
    GNSS接收机接收多样性

    公开(公告)号：JP2014089190A

    公开(公告)日：2014-05-15

    申请号：JP2013238367

    申请日：2013-11-18

    申请人： Qualcomm Incorporated ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    发明人： EMILIJA M SIMIC ,  DOUGLAS NAEL ROWITCH ,  SUNDAR RAMAN

    IPC分类号： G01S19/36 ,  H04B7/08 ,  H04J99/00

    CPC分类号： G01S19/36 ,  G01S19/24 ,  H04B2201/70715

    摘要： PROBLEM TO BE SOLVED: To provide a method etc. for wireless communications system receivers or position location system receivers which can remedy reduced acquisition sensitivity, degraded data demodulation performance, reduced availability of signals, diminished measurement quality, increase in "time to fix" (TTF) for a position determination, and the like, under various conditions such as weak signals and/or fading signals, frequency drift and noise.SOLUTION: One or more SPS signals are received at two or more physically separated antennas. Signals from the physically separated antennas are downconverted into complex digital signals that may undergo further processing to improve one or more performance metrics related to position estimation operations, for example.

    摘要翻译： 要解决的问题：为了提供无线通信系统接收机或定位系统接收机的方法等，其可以补救降低的采集灵敏度，降低的数据解调性能，降低的信号可用性，降低的测量质量，“修复时间”的增加（ TTF），用于位置确定等，在各种条件下，例如弱信号和/或衰落信号，频率漂移和噪声。解决方案：在两个或更多个物理上分离的天线处接收一个或多个SPS信号。 来自物理分离的天线的信号被下变频成复数数字信号，例如，可以经历进一步处理以改善与位置估计操作相关的一个或多个性能度量。

    Radio communication system
    6.
    发明专利
    Radio communication system 有权
    无线电通信系统

    公开(公告)号：JP2014010044A

    公开(公告)日：2014-01-20

    申请号：JP2012146522

    申请日：2012-06-29

    申请人： Nippon Soken Inc ,  株式会社日本自動車部品総合研究所 ,  Denso Corp ,  株式会社デンソー

    发明人： MATSUMOTO MUNENORI ,  TAKAOKA AKIRA ,  WAKAMATSU TOSHIHIRO

    IPC分类号： G01S13/79 ,  B60R25/01 ,  B60R25/10 ,  E05B49/00 ,  H04B1/707

    CPC分类号： H04B1/692 ,  B60R25/20 ,  G01S13/82 ,  H04B1/707 ,  H04B2201/70715 ,  H04W72/0453

    摘要： PROBLEM TO BE SOLVED: To increase the reachable range of a request signal from an in-vehicle device to a portable unit while suppressing the radio wave intensity of the request signal within a desired range, and to much more accurately specify the position of the portable unit.SOLUTION: An in-vehicle device 10 performs the spectrum diffusion modulation of transmission data by a predetermined diffusion coefficient, and transmits a request signal in an LF frequency band subjected to the spectrum diffusion modulation. Furthermore, the in-vehicle device 10 gradually changes the diffusion coefficient, and makes an LF transmission section 3 successively transmit a plurality of request signals whose reachable ranges are different, and determines the reception of a response signal to be transmitted by a portable unit 20 in response to the request signal, and divides a region where the portable unit 20 is positioned into a plurality of regions for specification on the basis of the determination result of the reception of the response signal.

    摘要翻译： 要解决的问题：为了将请求信号的可达范围从车载设备增加到便携式单元，同时将请求信号的无线电波强度抑制在期望的范围内，并且更准确地指定便携式 单元。解决方案：车载设备10通过预定的扩散系数执行传输数据的频谱扩散调制，并且在经过频谱扩散调制的LF频带中发送请求信号。 此外，车载装置10逐渐改变扩散系数，并且使LF发送部分3连续发送可达范围不同的多个请求信号，并且确定要由便携式单元20发送的响应信号的接收 响应于请求信号，并且基于响应信号的接收的确定结果，将便携式单元20所在的区域划分成多个区域以进行指定。