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    • 1. 发明授权
    • Clock synchronization
    • 时钟同步
    • US09065580B2
    • 2015-06-23
    • US13552093
    • 2012-07-18
    • Matthew Aaron SilvermanPaul Jeffrey StagerBrian Donald Hart
    • Matthew Aaron SilvermanPaul Jeffrey StagerBrian Donald Hart
    • H04J3/06H04W56/00
    • H04J3/0667G01S5/06H04W56/0075
    • In an example embodiment, a method for synchronizing clocks between a plurality of clocked devices where one of the plurality of clocked devices is not directly synchronized with another of the plurality of clocked devices. Clock offset and a clock drift between a first clock associated with a first device and a second clock associated with a second is directly determined based on signals exchanged between the first and second devices. Clock offset and clock drift between the second clock and a third clock associated with a third device is directly determined based on signals exchanged between the second and third devices. A clock offset and clock drift between the first clock and third clock is determined based on a difference between the clock offset and drift between the first and second clocks and the clock offset and drift between the second and third clocks.
    • 在示例实施例中,一种用于在多个时钟控制的设备之间同步时钟的方法,其中多个时钟控制的设备之一不直接与多个时钟设备中的另一个同步。 基于在第一和第二设备之间交换的信号直接确定与第一设备相关联的第一时钟和与第二设备相关联的第二时钟之间的时钟偏移和时钟漂移。 第二时钟与与第三设备相关联的第三时钟之间的时钟偏移和时钟漂移基于在第二和第三设备之间交换的信号直接确定。 第一时钟和第三时钟之间的时钟偏移和时钟漂移基于第一和第二时钟之间的时钟偏移和漂移之间的差异以及第二和第三时钟之间的时钟偏移和漂移来确定。
    • 2. 发明申请
    • CLOCK SYNCHRONIZATION
    • 时钟同步
    • US20100238917A1
    • 2010-09-23
    • US12405383
    • 2009-03-17
    • Matthew Aaron SILVERMANPaul Jeffrey StagerBrian Donald Hart
    • Matthew Aaron SILVERMANPaul Jeffrey StagerBrian Donald Hart
    • H04J3/06H04L7/00
    • H04J3/0667G01S5/06H04W56/0075
    • In an example embodiment, a method for synchronizing clocks between a plurality of clocked devices where one of the plurality of clocked devices is not directly synchronized with another of the plurality of clocked devices. Clock offset and a clock drift between a first clock associated with a first device and a second clock associated with a second is directly determined based on signals exchanged between the first and second devices. Clock offset and clock drift between the second clock and a third clock associated with a third device is directly determined based on signals exchanged between the second and third devices. A clock offset and clock drift between the first clock and third clock is determined based on a difference between the clock offset and drift between the first and second clocks and the clock offset and drift between the second and third clocks.
    • 在示例实施例中,一种用于在多个时钟控制的设备之间同步时钟的方法,其中多个时钟控制的设备之一不直接与多个时钟设备中的另一个同步。 基于在第一和第二设备之间交换的信号直接确定与第一设备相关联的第一时钟和与第二设备相关联的第二时钟之间的时钟偏移和时钟漂移。 第二时钟与与第三设备相关联的第三时钟之间的时钟偏移和时钟漂移基于在第二和第三设备之间交换的信号直接确定。 第一时钟和第三时钟之间的时钟偏移和时钟漂移基于第一和第二时钟之间的时钟偏移和漂移之间的差异以及第二和第三时钟之间的时钟偏移和漂移来确定。
    • 3. 发明授权
    • Clock synchronization
    • 时钟同步
    • US08249049B2
    • 2012-08-21
    • US12405383
    • 2009-03-17
    • Matthew Aaron SilvermanPaul Jeffrey StagerBrian Donald Hart
    • Matthew Aaron SilvermanPaul Jeffrey StagerBrian Donald Hart
    • H04J3/06H04L12/26G06F15/177
    • H04J3/0667G01S5/06H04W56/0075
    • In an example embodiment, a method for synchronizing clocks between a plurality of clocked devices where one of the plurality of clocked devices is not directly synchronized with another of the plurality of clocked devices. Clock offset and a clock drift between a first clock associated with a first device and a second clock associated with a second is directly determined based on signals exchanged between the first and second devices. Clock offset and clock drift between the second clock and a third clock associated with a third device is directly determined based on signals exchanged between the second and third devices. A clock offset and clock drift between the first clock and third clock is determined based on a difference between the clock offset and drift between the first and second clocks and the clock offset and drift between the second and third clocks.
    • 在示例实施例中,一种用于在多个时钟控制的设备之间同步时钟的方法,其中多个时钟控制的设备之一不直接与多个时钟设备中的另一个同步。 基于在第一和第二设备之间交换的信号直接确定与第一设备相关联的第一时钟和与第二设备相关联的第二时钟之间的时钟偏移和时钟漂移。 第二时钟与与第三设备相关联的第三时钟之间的时钟偏移和时钟漂移基于在第二和第三设备之间交换的信号直接确定。 第一时钟和第三时钟之间的时钟偏移和时钟漂移基于第一和第二时钟之间的时钟偏移和漂移之间的差异以及第二和第三时钟之间的时钟偏移和漂移来确定。
    • 4. 发明申请
    • CLOCK SYNCHRONIZATION
    • 时钟同步
    • US20120280714A1
    • 2012-11-08
    • US13552093
    • 2012-07-18
    • Matthew Aaron SILVERMANPaul Jeffrey StagerBrian Donald Hart
    • Matthew Aaron SILVERMANPaul Jeffrey StagerBrian Donald Hart
    • H03K19/096
    • H04J3/0667G01S5/06H04W56/0075
    • In an example embodiment, a method for synchronizing clocks between a plurality of clocked devices where one of the plurality of clocked devices is not directly synchronized with another of the plurality of clocked devices. Clock offset and a clock drift between a first clock associated with a first device and a second clock associated with a second is directly determined based on signals exchanged between the first and second devices. Clock offset and clock drift between the second clock and a third clock associated with a third device is directly determined based on signals exchanged between the second and third devices. A clock offset and clock drift between the first clock and third clock is determined based on a difference between the clock offset and drift between the first and second clocks and the clock offset and drift between the second and third clocks.
    • 在示例实施例中,一种用于在多个时钟控制的设备之间同步时钟的方法,其中多个时钟控制的设备之一不直接与多个时钟设备中的另一个同步。 基于在第一和第二设备之间交换的信号直接确定与第一设备相关联的第一时钟和与第二设备相关联的第二时钟之间的时钟偏移和时钟漂移。 第二时钟与与第三设备相关联的第三时钟之间的时钟偏移和时钟漂移基于在第二和第三设备之间交换的信号直接确定。 第一时钟和第三时钟之间的时钟偏移和时钟漂移基于第一和第二时钟之间的时钟偏移和漂移之间的差异以及第二和第三时钟之间的时钟偏移和漂移来确定。
    • 10. 发明授权
    • Locally adjusted radio frequency coverage maps in wireless networks
    • 无线网络中本地调整的无线电频率覆盖图
    • US07904092B2
    • 2011-03-08
    • US11619939
    • 2007-01-04
    • Brian Donald HartBretton Lee Douglas
    • Brian Donald HartBretton Lee Douglas
    • H04W40/00
    • H04W16/18
    • In one embodiment, a method for adjusting a radio-frequency coverage map. The method includes receiving calibration data comprising observed received signal strength values at one or more calibration points corresponding to a radio frequency transmitter, and identifying an applicable coverage map, where the coverage map provides, for the radio frequency transmitter, estimated received signal strength values at one or more locations. The method also includes determining one or more offset values at the one or more calibration points, where an offset value is based on a difference between an observed received signal strength value and an estimated received signal strength value at a given calibration point. The method also includes adjusting one or more estimated received signal strength values at one or more location bins of the coverage map based on a distance from the one or more calibration points and the one or more offset values.
    • 在一个实施例中,一种用于调整射频覆盖图的方法。 该方法包括接收包括在对应于射频发射机的一个或多个校准点处观察到的接收信号强度值的校准数据,以及为射频发射机识别覆盖图提供的适用覆盖图,其中估计接收信号强度值为 一个或多个位置。 该方法还包括确定一个或多个校准点处的一个或多个偏移值,其中偏移值基于观测到的接收信号强度值与给定校准点处的估计接收信号强度值之间的差异。 该方法还包括基于距离一个或多个校准点和一个或多个偏移值的距离来调整覆盖图的一个或多个位置仓上的一个或多个估计的接收信号强度值。