Invention Grant
US08949648B2 System and method to overcome wander accumulation to achieve precision clock distribution over large networks
有权
用于克服漫游积累的系统和方法，以实现大网络上的精准时钟分配
- Patent Title: System and method to overcome wander accumulation to achieve precision clock distribution over large networks
- Patent Title (中): 用于克服漫游积累的系统和方法，以实现大网络上的精准时钟分配
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Application No.: US13151872Application Date: 2011-06-02
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Publication No.: US08949648B2Publication Date: 2015-02-03
- Inventor: Mengkang Peng
- Applicant: Mengkang Peng
- Applicant Address: US CA Camarillo
- Assignee: Semtech Corp.
- Current Assignee: Semtech Corp.
- Current Assignee Address: US CA Camarillo
- Agency: Fitzsimmons IP Law
- Main IPC: G06F1/12
- IPC: G06F1/12 ; G06F1/10 ; H04L7/00 ; H04J3/06
Abstract:
A system and method for synchronizing clocks across a packet-switched network eliminates wander accumulation to enable precision clock distribution across a large network. In addition to standard Precision Time Protocol (PTP) synchronization messages or similar time synchronization messages, each clock regenerator stage receives a grand clock error message from the previous stage, updates this error message with its own stage clock error, and then transmits the updated grand clock error to the next stage. This enables the synchronization algorithm to compensate for the error of the previous stage, effectively locking each clock regenerator stage to the grand master clock directly.
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