Apparatus for the scanning of objects by means of ultrasound ech

Details Apparatus for the scanning of objects by means of ultrasound ech Apparatus for the scanning of objects by means of ultrasound ech

1983-10-17

1985-11-12

Levy, Stewart J.

Measuring and testing

Vibration

By mechanical waves

73625, 367100, 364821, G01N 2904

Patent

active

045520208

ABSTRACT:
An apparatus for the scanning of objects by means of ultrasound echography, comprising a mosaic (10) of ultrasound transducers which is connected to a transmitter stage (20) and a receiver stage (30) for the reception and processing of the ultrasound echos corresponding to the obstacles encountered by the transmitted signals in their direction of propagation, and also comprising a display stage (40). The transducers of the mosaic (10) are grouped in 2.sup.n subwindows in which a non-corrected echogram of an area of the objects scanned is formed. The receiver stage (30) comprises a device for determining correction delays to be applied to delay devices (61 . . . 68), said device comprising 2.sup.n -1 intercorrelation circuits (101,102, etc.) which operate on the basis of n successive divide-by-two operations of the aperture of the mosaic (10).

REFERENCES:
patent: 3561430 (1971-02-01), Filler et al.
patent: 4252025 (1981-02-01), Robinson
patent: 4471785 (1984-09-01), Wilson et al.
patent: 4484477 (1984-11-01), Buxton

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