Direct demodulation in ultrasound instruments
US5482044A · kind A · utility
30Cited by
30References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1992 |
| Grant date | Jan 9, 1996 |
| Priority date | — |
| Expiry date | Jan 14, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/5206
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A direct digital demodulator for demodulating ultrasound signals. The demodulator includes a baseband demodulator, a magnitude and differential phase generator, and a Doppler preprocessor. The demodulator further includes an interface for receiving a signal from an analog front end. The baseband demodulator utilizes a Hilbert transform to convert received ultrasound signals into analytic signals. The present invention compensates phase and frequency of the analytic signal in order to process the signal. The phase information in the signal is then extracted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.