Sampling method and data recovery circuit using the same
US8139697B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2008 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Apr 25, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0338
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A sampling method and a data recovery circuit using the same are provided. The sampling method includes following steps. First, a first strobe, a second strobe, a third strobe, and a fourth strobe are provided, wherein the second strobe lags the first strobe a first predetermined phase, the third and the fourth strobe respectively lag the first and the second strobe a second predetermined phase, and the second predetermined phase is half of the first predetermined phase. Then, a digital signal is respectively sampled with the first and the second strobe. Thereafter, the positions of data transition points of the digital signal are determined according to the sampling results of the first and the second strobe. Next, the third or the fourth strobe is selected as a preferable sampling strobe according to the determination result. Finally, the digital signal is sampled with the preferable sampling strobe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.