Patent ID: 6878113
Filing Date: 2005-04-12
Classification: G01S

Abstract:
1. An ultrasonic diagnostic apparatus, comprising: a transducer including plural elements that send an ultrasonic wave to an object to be inspected and receive the ultrasonic wave reflected from the object to be inspected; an analog to digital converter that digitizes each of plural received signals received by the plural elements; a first mixer that multiplies a signal output from the analog to digital converter and a first digital reference signal; a first filter that extracts a signal having a predetermined center frequency from a signal output from the first mixer; a digital delay unit that delays signals output from the first filter; an adder that adds plural signals output from the digital delay unit; a second mixer that multiplies a signal output from the adder and a second digital reference signal; an envelope detector that detects a signal output from the second mixer; a scan converter that converts a signal output from the envelope detector to a picture signal; and a display that displays a signal output from the scan converter.