Method and apparatus for detecting an envelope for ultrasonic signals

Patent metadata

Field	Value
Publication number	US-9506896-B2
Application number	US-201414529458-A
Country	US
Kind code	B2
Filing date	Oct 31, 2014
Priority date	Nov 21, 2013
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

A method and apparatus for envelope detection are disclosed. An envelope detection method according to an embodiment of the invention can include: receiving ultrasonic signals reflected off a target object; detecting peaks by using differences in pulses in the received signals; and generating an envelope by connecting the detected peaks with straight or curved lines.

First claim

What is claimed is:

1. An envelope detection method for generating ultrasonic images comprising:
receiving ultrasonic signals reflected off a target object;
performing an absolute vale computation on the received signal;
detecting peaks by using differences in amplitudes of absolute values according to time in the received signals; and
generating an envelope by connecting the detected peaks with straight or curved lines,
wherein the detecting peaks step comprises determining an amplitude of an absolute value at a point where the amplitude of the absolute value changes from an increasing trend to a decreasing trend to be a peak.

2. The envelope detection method of claim 1 , wherein the curved lines are quadratic or cubic curves.

3. An envelope detection apparatus for generating ultrasonic images comprising:
a receiving unit configured to receive ultrasonic signals reflected off a target object;
a pre-processing unit configured to perform an absolute value computation on the received signals;
a peak detection unit configured to detect peaks by using differences in amplitudes of absolute values according to time; and
an envelope detection unit configured to generate an envelope by connecting the detected peaks with straight or curved lines,
wherein the peak detection unit determines an amplitude of an absolute value at a point where the amplitude of the absolute value change from an increasing trend to a decreasing trend to be a peek.

Assignees

• Industry-Academic Cooperation Foundation Yonsei Univ

Inventors

• Hwang Do Sik
• Jang Jin Seong

Classifications

• G01N29/07

  by measuring propagation velocity or propagation time of acoustic waves · CPC title

• G01N29/0654

  Imaging · CPC title

• G01N29/36 Primary

  Detecting the response signal {, e.g. electronic circuits specially adapted therefor} · CPC title

• G01N29/4454

  Signal recognition, e.g. specific values or portions, signal events, signatures · CPC title

• G01S15/89 Primary

  for mapping or imaging · CPC title