The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 2020
Filed:
Jan. 31, 2014
Hitachi, Ltd., Tokyo, JP;
Chizue Ishihara, Tokyo, JP;
Hiroki Tanaka, Tokyo, JP;
Kunio Hashiba, Tokyo, JP;
Hiroshi Kuribara, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
There is provided a technique for obtaining a high-quality image by extracting only a nonlinear component with high accuracy in ultrasonic imaging using an amplitude modulation method of THI. By removing a fundamental wave component with high accuracy by making the influence of electrical distortion due to analog amplification on the echo signals of ultrasonic waves having different sound pressure levels approximately the same, only the nonlinear component is extracted with high accuracy. For example, the above influence is made to be the same by controlling the amplification factor of an amplification section. In addition, the above influence is made to be the same by restoring the digital data with a filter.