Digital phase locked loop system and method
US8471614B2 · kind B2 · utility
6Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 14, 2011 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Sep 7, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L2207/50
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A phase locked loop control system includes a digital controlled oscillator (DCO) that is controlled by logic cells in response to comparison of the oscillator output with a reference clock related signal. Delay cell number adjustment, delay cell load adjustment and cycle control are operative to digitally control the DCO frequency to obtain wide frequency range and limited jitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.