Patent · US Expired

Synchronization method

US6356795B1 · kind B1 · utility

18Cited by

2References

23Claims

0Family size

Assignee

Seimens Aktiengesellschaft · DE

Inventors

Herbert Barthel · Herzogenaurach, DE
Heiner Fuchs · Erlangen, DE
Alfons Göbel · Erlangen, DE

Key dates

Filing date	Dec 18, 1998
Grant date	Mar 12, 2002
Priority date	—
Expiry date	Dec 18, 2018

Classification

Technology area (CPC G)Physics
CPC primaryG06F11/1683
WIPO fieldControl
WIPO sectorInstruments

Abstract

A synchronization method for a redundant automation system composed of at least two subsystems is provided, where these subsystems execute functionally identical sequences of machine instructions, said sequences of functionally identical machine instructions having increment instructions at corresponding locations for incrementing a synchronization counter. Synchronization is performed on the basis of the value of a synchronization counter at least when one subsystem registers a special event. To do so, a synchronization counter target value is determined so that the subsystems interrupt the execution of the sequence of machine instructions on attaining a synchronization position at which the values of the respective synchronization counters attain the synchronization counter target value.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.