Clock extraction device with digital phase lock, requiring no external control
US8238508B2 · kind B2 · utility
2Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2008 |
| Grant date | Aug 7, 2012 |
| Priority date | — |
| Expiry date | Jan 27, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0004
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A device for extracting a clock signal from a baseband serial signal, includes an injection-locked oscillator (19), a phase-locked loop (25) including a digital phase detector (26). The oscillator (19) includes a digital input for controlling the value of its natural frequency, and the phase-locked loop (25) includes a counting circuit (30, 35) aggregating the relative values of the digital signal supplied by the digital phase detector (26) and supplying a control signal in digital form for the oscillator (19).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.