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公开(公告)号：US07411867B2
公开(公告)日：2008-08-12
申请号：US10967405
申请日：2004-10-18
摘要： Apparatus and method for producing a composite clock signal with optimized stability characteristics from individual clocks which have different stabilities or variances. The composite clock signal includes weighted individual clock signals. In a first (PPN) case, an optimum composite clock is a scale-factor-weighted linear combination of clock signals. In another (non-PPN) case, the optimum stable composite clock is the output of a linear filter of the input clocks signals. Both the phases and frequencies of the individual clocks over time are estimated.
摘要翻译： 用于产生具有不同稳定性或方差的各个时钟的具有优化的稳定特性的复合时钟信号的装置和方法。 复合时钟信号包括加权的各个时钟信号。 在第一（PPN）情况下，最佳复合时钟是时间信号的比例因子加权线性组合。 在另一（非PPN）情况下，最佳稳定复合时钟是输入时钟信号的线性滤波器的输出。 估计各个时钟的相位和频率。
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公开(公告)号：US07346797B2
公开(公告)日：2008-03-18
申请号：US11216945
申请日：2005-08-31
摘要： An apparatus and method are disclosed or producing a network of composite clocks with optimized stability characteristics from individual clocks that are part of a network wherein not all clocks are in communication with each other. By communicating information among the clocks in the network, each clock can construct its best estimate of composite time based upon all clocks in the network. The clocks that do not directly communicate with a specific clock are partitioned into disjoint groups for which the interclock measurements are compressed by a neighboring clock into a single composite clock. Each clock measures its time against the raw time of the clocks with which it is in direct communication and also inputs to its filter correction data for each of these composite clocks. The composite clock algorithm employed is dependent on the stability characteristics of the clocks in the network.
摘要翻译： 一种装置和方法被公开或产生具有优化的来自作为网络一部分的各个时钟的稳定特性的复合时钟网络，其中并非所有时钟彼此通信。 通过在网络中的时钟之间传递信息，每个时钟可以基于网络中的所有时钟来构建其对复合时间的最佳估计。 不与特定时钟直接通信的时钟被分割成不相交的组，对于这些时钟，时钟间测量被相邻时钟压缩成单个复合时钟。 每个时钟根据与其直接通信的时钟的原始时间测量其时间，并且还输入其对于这些复合时钟中的每一个的滤波器校正数据。 所采用的复合时钟算法取决于网络中时钟的稳定特性。
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