Method and apparatus for slaving the frequency and phase of an oscillator to a reference signal
US5373258A · kind A · utility
6Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1993 |
| Grant date | Dec 13, 1994 |
| Priority date | — |
| Expiry date | Jun 11, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/091
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In the slaving process, a reference signal is sampled by a clock signal of an oscillator and then digitized. The value representative of a phase error is then deduced from the sampled and digitized signal. A correction value is then deduced from this phase error to correct a digital value representing the oscillator control voltage. The device of the invention allows this process to be implemented. The invention also relates to a voltage-controlled crystal oscillator incorporating such a device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.