Ultrasonic image conversion

Details Ultrasonic image conversion Ultrasonic image conversion

1976-12-15

1978-06-20

Farley, Richard A.

Communications: electrical

Selective

Intelligence comparison for controlling

G01S 966, H01J 31495

Patent

active

040964671

ABSTRACT:
Ultrasonic imaging techniques are subject to interference from whiteout, a component at insonification frequency in the image signal. A technique for separating the image signal from whiteout by mixing the received ultrasonic radiation with another frequency is described. In one form using an electron beam to scan a transducer mosaic the beam is modulated and mixing occurs between the transducer and a signal plate. A filter connected to the signal plate selects a mixing product containing the image signal and rejects the insonification and beam frequencies.

REFERENCES:
patent: 3803606 (1974-04-01), Labail et al.
patent: 3899767 (1975-08-01), Jones

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