Method and apparatus for compensating for inoperative elements i

Details Method and apparatus for compensating for inoperative elements i Method and apparatus for compensating for inoperative elements i

1998-11-25

2000-09-19

Jaworski, Francis J.

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

A61B 800

Patent

active

061204498

ABSTRACT:
A method and an apparatus for compensating for fully or partially inoperative elements in an ultrasonic transducer array. The inoperative elements are compensated for by "bridging" or "shorting" them to fully operative elements. This compensation technique can be applied to one-dimensional or multi-dimensional transducer arrays. A bridge between a fully or partially inoperative element and an adjacent fully operative element can be achieved by physically shorting the elements somewhere in the signal chain or by electrically connecting the elements via switches, e.g., of a multiplexer. The state of the multiplexer switches (i.e., open or closed) is controlled by loading MUX State control data into a flash memory located on-board the probe. This MUX State control data includes switch settings for connecting a defective element to an adjacent fully functional element in the transducer array.

REFERENCES:
patent: 3873947 (1975-03-01), Johnson
patent: 4698807 (1987-10-01), Marwood et al.
patent: 4893284 (1990-01-01), Magrane
patent: 5520187 (1996-05-01), Snyder
patent: 5676149 (1997-10-01), Yao
patent: 5902241 (1999-05-01), Seyed-Bolorforosh et al.

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