Delta-sigma modulator for outputting analog representation of physiological signal
US7212847B2 · kind B2 · utility
13Cited by
20References
19Claims
0Family size
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Key dates
| Filing date | Feb 25, 2004 |
| Grant date | May 1, 2007 |
| Priority date | — |
| Expiry date | Jun 25, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/3028
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for providing a substantially real-time representation of an analog representation of a physiological signal is provided. The waveform signal from the sensor is converted into digital form. A delta-sigma modulator is used as a simple Digital-to-analog Converter (DAC). The output can then be provided through a simple hardware filter to give an analog output signal in nearly real-time, which can be used for other instruments, synchronization, display, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.