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:
Jan. 07, 1997
Filed:
Jul. 03, 1995
Hiroshi Masuzawa, Hachioji, JP;
Ryuuichi Shinomura, Higashimatsuyama, JP;
Kageyoshi Katakura, Tokyo, JP;
Hitachi Medical Corporation, Tokyo, JP;
Abstract
An ultrasound signal processor for receiving an ultrasound signal from a testing body by a plurality of electro-magnetic transducer elements and processing a plurality of received signals to obtain information of the interior of the testing body is provided with analog-digital converters for sampling at least two of received analog signals, multipliers for multiplying the outputs of the analog-digital converters by first complex digital reference signals, first low-pass filters for limiting the signal bands of the outputs of the multipliers, first complex multipliers for multiplying the outputs of the first low-pass filters by second complex digital reference signals, adders for performing the addition of the outputs of the first complex multipliers for real signals and the addition thereof for imaginary signals, memory devices for storing the outputs of the adders, second complex multipliers for multiplying signals read from the memory devices by third complex digital reference signals, and second low-pass filters for limiting the signal bands of the outputs of the second complex multipliers.