Apparatus and method for data capture using a read preamble
US8140778B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2010 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Sep 15, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C29/028
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data capturing device is provided. The data capturing device includes a data capturing device controller and data capturing components. The data capturing device is arranged to send a burst read command. Each of the data capturing components includes a DLL component, a data sampling component, a comparison component, and a valid clock calculation component. The DLL component is arranged to provide clock signals. The data sampling component is arranged to receive a serial data signal that includes a read preamble, where the read preamble includes a training pattern, and to sample the serial data signal with each of the clock signals. The comparison component is arranged to compare each of the sampled data signals with an expected training pattern. The valid clock calculation component is arranged to, based on the comparisons, select one of the clock signals as the valid clock signal for locking the DLL component to.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.