Strobe technique for time stamping a digital signal
US7574632B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2005 |
| Grant date | Aug 11, 2009 |
| Priority date | — |
| Expiry date | May 25, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/31932
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and apparatus generates a time-stamp to identify and record the time of an event such as an edge received in a data signal or clock signal. A set of strobe pulses can be generated by routing an external clock signal to delay elements with incrementally increasing delay values. A data signal or device under test clock signal can be applied to the input to each of a set of latches which are clocked by the strobe pulses. The set of latches can thereby capture a series of samples of the data signal or clock signal. The series of samples can be encoded as an edge time within a clock cycle. A clock cycle counter can be added to the edge time to generate the time stamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.