Synchronization method, computer system and program wherein the synchronization is provided as a user process of an operating system of the computer
US7318166B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 2004 |
| Grant date | Jan 8, 2008 |
| Priority date | — |
| Expiry date | Jan 13, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention is a computer system for performing processing synchronously with an internal system clock. The system includes a time information inputting part for detecting a signal for time notice sent from an external reference clock and acquiring an internal time at the present time from the system clock. The system further includes a time correction controlling part for comparing the time information together with the signal for time notice and the internal time at the time of detecting the signal for time notice and correcting the time of the system clock based on the comparison result. Further, the time correction controlling part calculates a signal interval that is a time difference in said system clock between two consecutive signals for time notice based on the internal time acquired from the time information inputting part, evaluating the calculated signal interval and judging whether or not it is required to correct the internal time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.