利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

42 条记录 (耗时 0.01 秒)

    Measuring the accuracy of an endpoint clock from a remote device
    1.
    发明授权
    Measuring the accuracy of an endpoint clock from a remote device 有权
    从远程设备测量端点时钟的精度

    公开(公告)号：US08891338B2

    公开(公告)日：2014-11-18

    申请号：US12362330

    申请日：2009-01-29

    申请人： Matthew Johnson ,  Mark Cornwall

    发明人： Matthew Johnson ,  Mark Cornwall

    IPC分类号： H04J3/06 ,  G04C11/04 ,  G01D4/00

    CPC分类号： G04C11/04 ,  G01D4/004 ,  Y02B90/242 ,  Y04S20/322

    摘要： Packet formats and associated metering infrastructure for filtering meter reading data that is being transmitted by utility meters are disclosed. In one embodiment, a method is provided of measuring the accuracy of an endpoint clock, such as a utility meter clock, from a remote device configured to capture transmissions that originate from the utility meter. Generally, the method includes synchronizing the time maintained by the utility meter with the time maintained by the remote device. The method receives and decodes a packet that includes a time stamp provided by the utility meter. Then, the method calculates the extent of the inaccuracy of the time stamp in the received packet and determines whether the extent of the inaccuracy satisfies a predetermined threshold.

    摘要翻译： 公开了用于过滤由电表进行传输的抄表数据的数据包格式和相关的计量基础设施。 在一个实施例中，提供了一种从被配置为捕获源自公用事业计量表的传输的远程设备测量端点时钟（诸如公用事业计时钟）的精度的方法。 通常，该方法包括将由公用事业计算机维护的时间与由远程设备维护的时间同步。 该方法接收并解码包含由公用事业计量表提供的时间戳的分组。 然后，该方法计算接收到的分组中的时间戳的不准确程度，并确定不准确度的程度是否满足预定阈值。

    Time synchronization apparatus based on parallel processing
    6.
    发明授权
    Time synchronization apparatus based on parallel processing 有权
    基于并行处理的时间同步装置

    公开(公告)号：US08532241B2

    公开(公告)日：2013-09-10

    申请号：US12774866

    申请日：2010-05-06

    申请人： Seung-woo Lee ,  Jung-hee Lee ,  Bhum-cheol Lee

    发明人： Seung-woo Lee ,  Jung-hee Lee ,  Bhum-cheol Lee

    IPC分类号： H04L7/00

    CPC分类号： H03L7/093 ,  G04C11/04 ,  H03L7/099 ,  H04J3/0667

    摘要： A parallel processing-based time synchronization apparatus employs a double-filter structure based on parallel processing, providing more precise and reliable time synchronization between a master device and a slave device. A first filter is implemented as hardware so as to realize time synchronization despite cyclic synchronization message transmission at short intervals and the second filter is implemented as software so as to realize precise time synchronization.

    摘要翻译： 基于并行处理的时间同步装置采用基于并行处理的双重滤波器结构，在主设备和从设备之间提供更精确和可靠的时间同步。 第一滤波器实现为硬件，以便尽可能短时间地进行循环同步消息传输而实现时间同步，并且第二滤波器被实现为软件，以便实现精确的时间同步。