Method and system for managing reference signals for network clock synchronization
US6259328A · kind A · utility
26Cited by
3References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1999 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Dec 17, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0331
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Methods and systems are disclosed for eliminating a phase transient of a controlled frequency oscillator caused by replacing a first reference signal by a second reference signal when the first reference signal becomes corrupted or otherwise unavailable, and for running a controlled frequency oscillator in a frequency-controlled holdover mode. The contradictory requirements of using a relatively low-cost controlled frequency oscillator tunable over a relatively wide frequency range and achieving high stability of its frequency in holdover mode are satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.