Variable-speed phase-locked loop system with on-the-fly switching and method therefor
US5838205A · kind A · utility
19Cited by
12References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1997 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Feb 18, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/07
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
According to the preferred embodiment, a phase-locked loop system is provided that overcomes the limitations of the prior art by providing the ability to switch output frequencies without a disruption in the phase lock of the output signal. The system uses a first phase-locked loop coupled with a second phase lock-loop such that their output signals are phase aligned and a switching mechanism for switching between the first phase lock output signal and the second phase lock loop output signal. The system is thus able to switch the frequency of its output without a disruption in the phase-lock of the signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.