Methods and devices for ultrasonic imaging

Details Methods and devices for ultrasonic imaging Methods and devices for ultrasonic imaging

1975-11-06

1978-10-10

Safourek, Benedict V.

Communications: electrical

Selective

340 5H, 340 5MP, 343 17, 358112, 73620, 73629, G01N 2904

Patent

active

041199383

ABSTRACT:
N elementary transducers are distributed regularly along a line of scanning. An ultrasonic frequency generator generates a high frequency signal which is applied to a first set of switches with a phase angle .phi. and to a second set of switches with a phase angle .phi. + .pi.. First and second registers are provided for temporarily energizing selected ones of said first and second set of switches such that the high frequency signal is applied to a set of n transducers with a phase angle of either .phi. or .phi. + .pi.. Third and fourth registers stored a phase distribution signal which is serially clocked into and through the first and second registers such that the high frequency signal is applied to n transducers with a phase distribution determined by said stored distribution signal at each of a plurality of successive times, each time to a set of n transducers which is shifted by one transducer of the array of transducers such that scanning occurs throughout the array.

REFERENCES:
patent: 3911730 (1975-10-01), Niklas

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