Patent · US Active

Method for switching between two redundant oscillator signals within an alignment element

US8055931B2 · kind B2 · utility

2Cited by

7References

9Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Ralf Ludewig · Schenefeld, DE
Thuyen Le · Taufkirchen, DE
Tilman Gloekler · Schrobenhausen, DE
Willm Hinrichs · Holzgerlingen, DE

Key dates

Filing date	Oct 6, 2008
Grant date	Nov 8, 2011
Priority date	—
Expiry date	Jan 19, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG06F1/12
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method is provided for switching between two oscillator signals within an alignment element. In accordance with the method, one of the two oscillator signals one is selected as a first master signal in order to provide an output stepping signal at an output of the alignment element. The method comprises introducing a virtual stepping signal when a switch between the two oscillator signals occurs or when a failure in the first master signal is detected. The method further comprises sending the virtual stepping signal to the output of the alignment element in the event of a switch until an alignment with a new master signal is completed.

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