| 摘要 |
An ultrasonic transmitting and receiving apparatus for performing the multibeam transmission capable of suppressing the increase in withstand voltage of the ultrasonic transducers and power consumption with increase of the number of transmission beams. This apparatus includes an ultrasonic probe, a drive waveform synthesizing unit for generating information on a synthesized drive waveform obtained by synthesizing the drive waveforms with respect to the respective ultrasonic transducers in order to allow the ultrasonic probe to transmit the ultrasonic beams simultaneously in the different directions, transmitting circuits for generating the drive signals according to the information generated by the drive waveform synthesizing unit and in which plural kinds of maximum output voltages are determined so as to correspond to the maximum amplitudes of the drive signals supplied to the respective ultrasonic transducers, and receiving circuits for processing the detection signals outputted from the ultrasonic transducers received the ultrasonic echoes, respectively.
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