Direct demodulation in ultrasound instruments

Details Direct demodulation in ultrasound instruments Direct demodulation in ultrasound instruments

1994-05-04

1995-08-01

Jaworski, Francis

Surgery

Truss

Pad

12866190, A61B 800

Patent

active

054372810

ABSTRACT:
A direct digital modulator 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.

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