Patent · US Expired

Method and apparatus for adjusting a time of day clock without adjusting the stepping rate of an oscillator

US7356725B2 · kind B2 · utility

27Cited by

6References

9Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Eberhard Engler · Rötteln, DE
Mark S. Farrell · Pleasant Valley, US
Klaus Meissner · Herrenberg, DE
Ronald M. Smith, Sr. · Wappingers Falls, US

Key dates

Filing date	Sep 9, 2005
Grant date	Apr 8, 2008
Priority date	—
Expiry date	Mar 9, 2026

Classification

Technology area (CPC G)Physics
CPC primaryG06F1/14
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A system, method and computer program product for steering a time-of-day (TOD) clock for a computer system having a physical clock providing a time base for executing operations that is stepped to a common oscillator. The method includes computing a TOD-clock offset value (d) to be added to a physical-clock value (Tr) value to obtain a logical TOD-clock value (Tb), where the logical TOD-clock value is adjustable without adjusting a stepping rate of the oscillator.

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