Clock recovery circuit
US9379880B1 · kind B1 · utility
11Cited by
11References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2015 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | Jul 9, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0337
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Clock data recovery can be accomplished using a phase change determination circuit that generates, based upon detected phase differences between a capture clock signal and data signal, a delta signal and a delta selection signal. A calculation circuit generates a set of phase interpolation (PI) codes from prior and speculative values of the delta signal. A selection circuit selects, in response to the delta selection signal, between the sets of PI codes, which are provided as an output of the clock data recovery device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.