Continuous adaptive data capture optimization for interface circuits
US11714769B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2022 |
| Grant date | Aug 1, 2023 |
| Priority date | — |
| Expiry date | Apr 19, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2005/00019
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method for operating a data interface circuit whereby calibration adjustments for data bit capture are made without disturbing normal system operation includes initially establishing, using a first calibration method where a data bit pattern received by the data interface circuit is predictable, an optimal sampling point for sampling data bits received by the data interface circuit, and during a normal system operation and without disturbing the normal system operation, performing a second calibration method where the data bit pattern received by the data interface circuit is unpredictable. The second calibration method determines an amount of a timing drift for received data bit edge transitions and adjusts the optimal timing point determined by the first calibration method to create a revised optimal timing point. The second calibration method samples fringe timing points associated with the transition edges of a data bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.