Synchronization of a generated clock
US8391105B2 · kind B2 · utility
6Cited by
6References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 13, 2010 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | Sep 8, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G7/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A real time clock circuit is provided that has an onboard oscillator continuously providing an internal clock frequency, which is digitally synchronized to a more accurate reference clock frequency. An exemplary real time clock inhibits synchronization of the internal clock frequency when the reference clock is unavailable or if the reference clock's frequency is outside of a defined accuracy range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.