公开(公告)号：US06983032B2

公开(公告)日：2006-01-03

申请号：US09941002

申请日：2001-08-28

Applicant: Fernando A. Mujica ,  Udayan Dasgupta ,  Sandeep Kesrimal Oswal ,  Murtaza Ali ,  Pradeep Kiran Sarvepalli ,  Prakash Easwaran ,  Diptendra Narayan Basu

Inventor： Fernando A. Mujica ,  Udayan Dasgupta ,  Sandeep Kesrimal Oswal ,  Murtaza Ali ,  Pradeep Kiran Sarvepalli ,  Prakash Easwaran ,  Diptendra Narayan Basu

IPC: H03D3/24

CPC classification number: H04L7/0337 ,  H04L27/2657

Abstract: The present invention provides an apparatus, system and method for synchronizing a local clock signal with a remote clock signal in a communication network. Phase information is used to calculate a number of “clock jitters” per unit of time needed to synchronize the locally generated clock with the remote clock. Introducing (removing) a given amount of delay at a particular point in the local clock signal results in a positive (negative) jitter in which its minimum value defines the jitter resolution. The jitters are introduced to the local clock signal from a plurality of tapped delay line elements (310) selected by a phase selector (350) in response to a timing correction signal issued by a phase error module (520).

Abstract translation: 本发明提供了一种在本地时钟信号与通信网络中的远程时钟信号同步的装置，系统和方法。 相位信息用于计算在本地生成的时钟与远程时钟同步所需的每单位时间的“时钟抖动”数量。 在本地时钟信号的特定点引入（去除）给定量的延迟会导致正（负）抖动，其中最小值定义抖动分辨率。 响应于由相位误差模块（520）发出的定时校正信号，从由相位选择器（350）选择的多个抽头延迟线元件（310）中将抖动引入本地时钟信号。