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. 07, 2020
Filed:
Feb. 26, 2014
Hitachi, Ltd., Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A compact delay circuit that can dynamically change delay time is configured. A probe includes an analog memory unit that accumulates electric charges corresponding to a reflected wave of an ultrasonic wave produced by a difference between the acoustic impedances on a plurality of capacitorsand in turn outputs the electric charges accumulated on the capacitorsto an analog memory unit. In accumulating electric charges, when a control signal Ctls_l that increases delay time of the reflected wave is inputted, the analog memory unitaccumulates the same electric charges on two or more of the capacitorsfor a preset period, or in outputting electric charges, when a control signal Ctlo_l is inputted, the analog memory unitoutputs the electric charges accumulated on one of the capacitorsfor a preset period.