Calibration of oscillator devices
US7187241B2 · kind B2 · utility
17Cited by
56References
46Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2003 |
| Grant date | Mar 6, 2007 |
| Priority date | — |
| Expiry date | Dec 4, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L2207/50
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A clock device having a resonating device such as a crystal of SAW supplying a controllable oscillator such as a digitally controlled oscillator is calibrated by supplying a calibration clock. A phase-locked loop is utilized to generate one or more correction factors causing the PLL to lock to the calibration clock. The one or more correction factors are then stored in non-volatile memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.