06975655 is referenced by 127 patents and cites 8 patents.

A method of controlling data sampling clocking of asynchronous network nodes, each asynchronous network node having a local clock and transmitting and receiving packets to and from an asynchronous network according to an asynchronous network media access protocol. An asynchronous network node capable of transmitting and receiving packets on the asynchronous network is designated as a master node. Each non-master asynchronous network node which desires to synchronously transport packets across the asynchronous network is designated as a slave node. A master node clock of the master node is synchronized with a slave node clock of each slave node. Each slave node clock is continuously corrected compared with the master node clock to smooth slave clock error to an average of zero compared with the master clock as a reference using timestamp information from the master node. A derivative clock at the slave node is derived from the continuously correcting each slave node clock to control data sampling at the slave node.

Title
Method of controlling data sampling clocking of asynchronous network nodes in a frame-based communications network
Application Number
9/826067
Publication Number
6975655 (B2)
Application Date
April 4, 2001
Publication Date
December 13, 2005
Inventor
Tracy D Mallory
Palo Alto
CA, US
Matthew James Fischer
Mountain View
CA, US
Agent
Christie Parker & Hale
Assignee
Broadcom Corporation
CA, US
IPC
H04J 003/06
H04L 012/28
View Original Source