Timing phase detection using a matched filter set
US8705673B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 5, 2008 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Dec 22, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03248
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Various embodiments of the present invention provide systems and methods for phase identification in data processing systems. As one example, a circuit is disclosed that includes a bank of matched filters with two or more matched filters tuned to detect patterns corresponding to a timing pattern sampled using different phases of a sample clock. In particular, the bank of matched filters includes at least a first matched filter tuned to detect a first pattern corresponding to the timing pattern sampled using a first phase of a sample clock, and a second matched filter tuned to detect a second pattern corresponding to the timing pattern sampled using a second phase of the sample clock. The circuits further include a logic circuit operable to determine whether the sample clock is closer to the first phase or the second phase based on an output of the first matched filter and an output of the second matched filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.