Ultrasonic examination and imaging

Details Ultrasonic examination and imaging Ultrasonic examination and imaging

1980-12-30

1982-09-21

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

73626, 367 7, 367138, G01S 1589

Patent

active

043510388

ABSTRACT:
An ultrasonic imaging device comprises transducers distributed along a line and operable at a frequency f. A generator delivers electrical pulses to time delay means which provide, in response to each electrical pulse, a plurality of low level pulses delayed by increased time delays in a number lower than the number of transducers. The distribution of the time delays between the transducers is stored in memory means and corresponds to focusing at a point located at a predetermined distance from the line. A plurality of amplifiers are each associated with an individual one of the transducers and deliver an energizing pulse to the associated transducer in response to a particular one of the low level pulses appearing on an associated channel of a bus line which is selected by the memory.

REFERENCES:
patent: 4117446 (1978-09-01), Alais
patent: 4119938 (1978-10-01), Alais
patent: 4234940 (1980-11-01), Iinuma
patent: 4253338 (1981-03-01), Iinuma et al.

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