G - Physics – 01 – F
Patent
G - Physics
01
F
349/36, 349/47
G01F 1/66 (2006.01) G01S 7/52 (2006.01) G01S 15/89 (2006.01) G10K 11/34 (2006.01)
Patent
CA 1146662
PHF 79.545 9 4.4.1980 ABSTRACT: Circuit for processing the signals received by a mosaic of ultrasonic transducers in B-mode echography. A processing circuit is connected to the output of a mosaic which consists of n first electrodes on a principal surface of a TGS plate and of 2p second electrodes on the other principal surface thereof. The circuit is constructed so that the output connections of the second electrodes are regrouped in p resultant connections which are connected, via p paths which each comprise an amplifier and a variable delay line, to the inputs of a first adder whose output is connected, via a network of (q-1) delay lines having a given delay time, to the inputs of q parallel variable delay lines which are connected in parallel and which are connected themselves, via their output, to the q inputs of a second adder. The delay times thus realized are controlled so that a first ultrasonic lens and a second ultrasonic lens are successively formed.
354854
Auphan Michel J.
Baghuis Ludo C.j.
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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