Signal averaging using gating signal obtained from autocorrelation of input signals
US7147601B2 · kind B2 · utility
36Cited by
2References
22Claims
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Key dates
| Filing date | Sep 30, 2003 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | May 12, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/0295
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A plethysmographic or other signal is autocorrelated to give a first-pass determination of the distances among individual waveforms. A waveform is isolated, tested to determine whether its amplitude remains in suitable bounds for signal averaging, and convolved with the signal to match it with the other waveforms for averaging. Thus, a separate gating signal is not needed for signal averaging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.