Method of driving two-dimensional array ultrasonic probe,...

Details Method of driving two-dimensional array ultrasonic probe,... Method of driving two-dimensional array ultrasonic probe,...

2005-03-22

2005-03-22

Williams, Hezron (Department: 2856)

Measuring and testing

Vibration

By mechanical waves

C073S628000, C600S447000

Reexamination Certificate

active

06868729

ABSTRACT:
For the purpose of reducing the load on hardware for driving a two-dimensional array ultrasonic probe having a multiplicity of transducers, an ultrasonic diagnostic apparatus includes programmable gain amplifiers a00-a99for amplifying signal voltages e00-e99from transducers in a two-dimensional array ultrasonic probe, voltage-to-current converters h00-h99for converting the voltages into current signals i00-i99, a matrix switch M for outputting additive current signals I0-I9obtained by dividing the current signals i00-i99into groups and adding current signals in respective groups, current-to-voltage converters H0-H9for converting the currents into voltage signals, programmable gain amplifiers A0-A9, A-D converters C0-C9, and a digital beamformer unit B for conducting reception beamforming using digital signals D0-D9and outputting an acoustic line signal W.

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