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. 12, 2005
Filed:
Jul. 02, 2001
Yuichi Miwa, Tokyo, JP;
Shin-ichiro Umemura, Hachioji, JP;
Ryuichi Shinomura, Higashimatsuyama, JP;
Hirotaka Baba, Kashiwa, JP;
Naoto Fujita, Nagareyama, JP;
Yuichi Miwa, Tokyo, JP;
Shin-ichiro Umemura, Hachioji, JP;
Ryuichi Shinomura, Higashimatsuyama, JP;
Hirotaka Baba, Kashiwa, JP;
Naoto Fujita, Nagareyama, JP;
Hitachi Medical Corporation, Tokyo, JP;
Abstract
An ultrasonic diagnostic apparatus acquires images different in a frequency. The invention is composed of a transducer including plural elements for sending an ultrasonic wave and receiving the reflected ultrasonic wave, analog to digital converters that digitize plural received signals, first mixers that respectively multiply a signal from the converter and a first digital reference signal, first filters that respectively extract a signal having a predetermined center frequency from a signal from each first mixer, digital delay units that respectively delay a signal from each first filter, an adder that adds plural signals from the digital delay units, and a second mixer that multiplies a signal from the adder and a second digital reference signal. An envelope detector detects a signal from the second mixer, and a scan converter converts a signal from the detector to a picture signal for display, so the pass band of the filter is not required to be changed.