PURPOSE: According to the ultrasonic diagnostic equipment and method is the various medium of the human tissue, the acoustic velocity is presumed on a real time basis and it applies. CONSTITUTION: It changes the reflected wave coming back from the objects into the electric signal and the ultrasonic probe(110) transmits a message. The multichannel transceiver(120) receives a message the electric signal from the ultrasonic probe detecting the reflected wave. The video color deflection(130) is created video data based on the electric signal received a message from the multichannel transceiver.