Microprocessor programmable clock calibration system and method
US7890787B2 · kind B2 · utility
6Cited by
8References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2006 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Dec 12, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A microprocessor programmable clock calibration device compares, in response to a calibration command from a programmable processor, turns on a normally off reference oscillator clock, compares the frequency of the reference oscillator clock with the frequency of a calibratable oscillator clock, turns off the reference oscillator clock and adjusts, in response to a difference in those frequencies, the frequency of the calibratable oscillator clock towards that of the reference oscillator clock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.