Method and arrangement for eye diagram display of errors of digital waveforms
US9933984B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2015 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Aug 9, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/3171
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and arrangement for displaying a digital waveform in an eye diagram simultaneously with an indication of acceptability of the digital waveform. A decoded digital waveform is separated into overlapping waveform permutations based on a number of digital states and transition points in the eye diagram. Submasks equal in number to the waveform permutations and that are derived from a common, known good waveform, are retrieved from a memory component. Each retrieved submask is applied to a corresponding waveform permutation to determine any locations at which the waveform permutation exceeds a boundary of the submask. Only one submask is applied to each waveform permutation. The waveform is displayed in the eye diagram simultaneous with a visual indication of the locations at which any of the waveform permutations exceeds the boundary of the corresponding submask, to enable visual assessment of the acceptability/validity of the digital waveform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.