Apparatus and method for skew measurement
US7454647B1 · kind B1 · utility
2Cited by
3References
20Claims
0Family size
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Key dates
| Filing date | Jul 28, 2005 |
| Grant date | Nov 18, 2008 |
| Priority date | — |
| Expiry date | Oct 5, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/31937
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A skew measurement system and method wherein each of the signals among which the skew is to be determined is connected one at a time to a clock recovery loop. The locked state of the clock recovery loop is used as an indicator of the skew of the data signal relative to the internal clock of the clock recovery loop. By measuring the difference between the locked state of different signals, their relative skew can be measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.