Ultrasonic apparatus

摘要

An ultrasonic apparatus is provided with an adaptive signal processing block (007) and a fixed signal processing block (006). The adaptive signal processing block generates a first intermediate signal by calculating a correlation matrix of a plurality of received electrical signals, extracting a plurality of sub-matrices from the correlation matrix, calculating a sub-correlation matrix by averaging the plurality of sub-matrices, determining a weighting coefficient from the sub-correlation matrix, and synthesizing the plurality of received electrical signals by using the weighting coefficient. The fixed signal processing block generates a second intermediate signal by synthesizing the plurality of received electrical signals with the use of a predetermined weighting coefficient. Then, a comparison and synthesis processing block (008) generate an output signal by comparing and synthesizing the first and second intermediate signals with each other.

主权项

1. An ultrasonic apparatus which acquires biological information by receiving an ultrasonic wave from a specimen, said apparatus comprising:
a plurality of transducers that receive ultrasonic waves and convert them into received electrical signals, respectively; an adaptive signal processing unit that generates a first intermediate signal with the use of a plurality of received electrical signals obtained from said plurality of transducers and a weighting coefficient by calculating a correlation matrix of the plurality of received electrical signals, extracting a plurality of sub-matrices from said correlation matrix, calculating a sub-correlation matrix by averaging said plurality of sub-matrices, and determining said weighting coefficient from said sub-correlation matrix; a fixed signal processing unit that generates a second intermediate signal with the use of said plurality of received electrical signals and a predetermined weighting coefficient; and a unit that generates an output signal to be used for acquisition of said biological information by comparing said first intermediate signal and said second intermediate signal therebetween.