Focusing circuit for ultrasound imaging system

Details Focusing circuit for ultrasound imaging system Focusing circuit for ultrasound imaging system

1979-12-14

1982-05-18

Michell, Robert W.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

73626, 128660, G01S 966

Patent

active

043308759

ABSTRACT:
A focusing circuit for focusing an array of transducers of an ultrasound imaging system includes a variable delay line comprising a plurality of summing amplifiers and a plurality of variable delay elements provided between successive summing amplifiers. A plurality of switches is provided for respectively connecting the transducers to selected summing amplifiers. The amount of delay of each variable delay element is individually controlled so that the corresponding electrical signals derived from the transducers arrive in phase at the output end of the variable delay line.

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patent: 4140022 (1979-02-01), Moslak
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patent: 4208916 (1980-06-01), Thomenius et al.
patent: 4223560 (1980-09-01), Glenn

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