Method and apparatus for identifying a waveform period
US6417701B1 · kind B1 · utility
4Cited by
4References
36Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 29, 2000 |
| Grant date | Jul 9, 2002 |
| Priority date | — |
| Expiry date | Sep 29, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/088
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A technique is provided for identifying waveform period or specific events during a waveform period. A periodic waveform is an input signal for a comparator, voltage divider and a balanced load. The circuitry produces a square waveform that has the same period as the input waveform, but is phase shifted based upon time required for the input waveform to cross positive and negative offsets from a zero axis. The resulting timing signals may be used for analysis of the input waveform, such as for RMS calculations based upon sampling of the input waveform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.