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:
Jul. 23, 2002
Filed:
Feb. 15, 2001
Yuichi Miwa, Chofu, JP;
Ryuichi Shinomura, Higashimatsuyama, JP;
Hirotaka Baba, Kashiwa, JP;
Satoshi Tamano, Kashiwa, JP;
Hitachi Medical Corporation, Tokyo, JP;
Abstract
An ultrasonic diagnostic apparatus in which the distortion of the received wave signal due to the ununiformity of the interior of an human body can be reduced accurately with a small circuit scale and an ultrasonic image of high resolution can be produced. The apparatus comprises a probe including an arrangement of elements for transmitting and receiving ultrasonic pulses to and from the interior of a subject, delay means for delaying the wave signal received from each element of the probe, and a plurality of adder means connected in series to the output of the delay means for adding the output signal of the preceding stages thereby to form an ultrasonic beam. The apparatus further comprises correlation means for calculating the correlation of two or more output signals of any of the adder means, and delay correcting means for estimating as many delay correction amounts as the input signals to the delay means from the time difference between adjacent signals generated from the correlation means thereby to correct the delay time of the received wave signal.