Abstract: To apply our new invention in the most preferred application mode, we used an ultrasonic diagnostic system that can instantaneously switch over to the CW Doppler method or B-mode imaging method when both methods are combined using a commonly applicable array probe. The ultrasonic diagnostic system based on this new invention is configured with the following features:Dividing multiple vibrating elements of a commonly applicable array probe (3) into two groups, (3T) and (3R), andconnecting the first vibrating element group (3T) to the first transmitting driver (2T) to which low voltage is supplied by the power supply (4), and connecting the second vibrating element group (3R) to the second transmitting driver (2R) to which high voltage is supplied by the power supply (4).

Abstract: An improved matrix switch circuit comprising an array of analog switches disposed in the form of a matrix and one or more control memories for storing control signals which cause their respective switches of the array to open or close. An interface is provided between the control memories and the array of the switches. The interface receives the control signals from the control memories and holds them. The held signals are then supplied to the switches of the array. While the switches of the array are being controlled according to the control signals held in the interface, the contents of the control memories can be changed at any desired instant.