公开(公告)号：KR1020080101503A

公开(公告)日：2008-11-21

申请号：KR1020070048700

申请日：2007-05-18

Applicant: 삼성전자주식회사

Inventor： 조재헌 ,  왕사해 ,  황성택 ,  오윤제 ,  후앙,저우송 ,  젱,지안펭

IPC: H04L7/02 ,  H04L7/00 ,  H04L12/28

CPC classification number: H04L7/02 ,  H04L12/407

Abstract: A node apparatus for clock synchronization in a distributed control system and a method for clock synchronization reduce an error due to a rapid variation of a frequency scale factor by applying a weight value to a frequency scale factor to determine a frequency compensation factor. A slave port(221,225,23-1,23-2) receives the clock information transmitted from a host node apparatus and transmits the clock information to the local clock, and transmits the synchronization finishing information informing the termination of the synchronizing process with the host node apparatus to a master port. A local clock receives the clock information from the slave port and changes the clock inside the node device. One or more master ports receive the synchronization completion message from the slave port, and receive the changed clock from the local clock, and transmit the changed clock to the slave node.

Abstract translation: 分布式控制系统中的时钟同步的节点装置和时钟同步的方法通过对频率比例因子应用权重值来减小由频率比例因子的快速变化引起的误差，从而确定频率补偿因子。 从端口（221,225,23-1,23-2）接收从主机节点设备发送的时钟信息，并将时钟信息发送到本地时钟，并发送通知与主机终止同步处理的同步完成信息 节点设备到主端口。 本地时钟从从端口接收时钟信息，并更改节点设备内的时钟。 一个或多个主端口从从端口接收同步完成消息，并从本地时钟接收改变的时钟，并将改变的时钟发送到从节点。