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    • 104. 发明授权
    • Burst transmission method, and receiver resetting method and apparatus in a passive optical network
    • 无源光网络中的突发传输方法和接收机复位方法及装置
    • US08571422B2
    • 2013-10-29
    • US13210848
    • 2011-08-16
    • Jing LiDongning FengDongyu GengFrank Effenberger
    • Jing LiDongning FengDongyu GengFrank Effenberger
    • H04B10/06
    • H04B10/60H04J3/0608H04J3/1694H04J2203/0067H04Q11/0066H04Q11/0067
    • A burst transmission method and a receiver resetting method and apparatus in a Passive Optical Network (PON) are provided. A burst receiver resetting method in a PON includes: receiving a preamble sequence and synchronizing data; after synchronizing the data, continuing to receive the data, and matching a Burst Terminator (BT); and resetting a receiver after successfully matching the BT. Meanwhile, an apparatus for implementing the method and a corresponding burst data transmission method are provided. By using the burst receiver resetting method and apparatus in the PON and the corresponding burst transmission method at an Optical Network Unit (ONU) burst transmission end, a Reach Extender (RE) does not need to unpack upstream burst bandwidth allocation information carried in downstream data. Therefore, the complexity of the implementation of the RE is reduced, and the method is simple and effective.
    • 提供了一种无源光网络(PON)中的突发传输方法和接收机复位方法和装置。 PON中的突发接收机复位方法包括:接收前同步码序列和同步数据; 在同步数据之后,继续接收数据,并匹配突发终结器(BT); 并在成功匹配BT后重置接收机。 同时,提供了一种用于实现该方法和相应突发数据传输方法的装置。 通过在光网络单元(ONU)突发传输端使用PON中的突发接收机重置方法和装置以及对应的突发传输方法,接入扩展器(RE)不需要解压缩在下行数据中携带的上行突发带宽分配信息 。 因此,实施RE的复杂性降低,方法简单有效。
    • 107. 发明申请
    • MULTI-ARRAY LATEROLOG TOOLS AND METHODS WITH DIFFERENTIAL VOLTAGE MEASUREMENTS
    • 具有差分电压测量的多阵列流变仪工具及方法
    • US20130234718A1
    • 2013-09-12
    • US13884034
    • 2011-11-02
    • Shanjun LiLuis E. San MartinMichael S. BittarJing Li
    • Shanjun LiLuis E. San MartinMichael S. BittarJing Li
    • G01V3/20
    • G01V3/20E21B47/102E21B49/00G01V3/24G01V3/28G01V2200/16
    • Multi-array laterolog tool systems and methods acquire a set of array measurements sufficient to provide laterolog tool measurements of differing array sizes. Such systems and method offer multiple depths of investigation while offering greater measurement stability in borehole environments having high resistivity contrasts. In at least some system embodiments, a wireline or LWD tool body has a center electrode positioned between multiple pairs of guard electrodes and a pair of return electrodes. The tool's electronics provide a current from the center electrode to the pair of return electrodes and currents from each pair of guard electrodes to the pair of return electrodes. Each of the currents may be distinguishable by frequency or distinguishable by some other means. This novel arrangement of currents provides a complete set of measurements that enables one tool to simultaneously emulate a whole range of laterolog tools.
    • 多阵列后验工具系统和方法获取足够的阵列测量集,以提供不同阵列大小的后者工具测量。 这种系统和方法提供多个调查深度,同时在具有高电阻率对比度的钻孔环境中提供更大的测量稳定性。 在至少一些系统实施例中,有线或LWD工具主体具有位于多对保护电极和一对返回电极之间的中心电极。 工具的电子器件提供从中心电极到一对返回电极的电流以及从每对保护电极到一对返回电极的电流。 每个电流可以通过频率区分或通过某种其他方式可区分。 这种新颖的电流布置提供了一整套测量,使一个工具能够同时模拟一整套后期工具。