ULTRASOUND IMAGING DEVICE, ULTRASONIC PROBE, AND TRANSMISSION DEVICE

WIPO Patent Application WO/2019/093004

A1

The purpose of the present invention is to weight a drive signal for each transducer without recalculating the amplitude of the drive signal for each transducer even when the intensity of an ultrasonic beam is changed. The ultrasound imaging device comprises: a plurality of transducers for transmitting ultrasonic waves; and a transmission unit for supplying a drive signal to each of the plurality of transducers. An amplitude control voltage generation unit and a transmission circuit unit of the transmission unit are connected to a shared voltage power source. The amplitude control voltage generation unit receives an output voltage of the voltage power source and an attenuation degree setting signal indicating the degree of attenuation of the drive signal for each transducer to use in weighting the drive signal, and generates an amplitude control voltage corresponding to the voltage obtained by attenuating the output voltage of the voltage power source by the attenuation degree. The transmission circuit unit reduces the output voltage of the voltage power source to a voltage corresponding to the amplitude control voltage, and generates, for each transducer, a drive signal having a predetermined waveform with an amplitude of the reduced voltage.

JP2020062200	ULTRASONIC DIAGNOSTIC APPARATUS AND DISPLAY METHOD
JP2023093254	SCREENING SUPPORT APPARATUS
WO/2005/010711	ROBOTIC 5-DIMENSIONAL ULTRASOUND

YAZAKI TORU (JP)
AMINO KAZUHIRO (JP)

PCT/JP2018/035726

May 16, 2019

September 26, 2018

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HITACHI LTD (JP)

A61B8/14

JPH01265945A	1989-10-24
JP2006101997A	2006-04-20

"Revision Medical ultrasound machines", 20 January 1997, CORONA PUBLISHING CO., pages: 38

SANNOZAKA PATENT LAW FIRM (JP)

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