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:
Oct. 25, 1988
Filed:
Jul. 06, 1987
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An ultrasonic wave diagnostic apparatus having an array of electro-acoustic transducer elements and respective channels for supplying drive signals to the electro-acoustic transducer elements and amplifying received echo signals from these elements, with the respective overall gains of the channels being controlled by corresponding values of weighting data. A set of mutually independent D/A converters, smaller in number than the number of electro-acoustic transducer elements, produce weighting data for respective ones of the channels that are spaced apart by a fixed number of channels. Respective interpolated values of weighting data for the remaining channels are derived by analog operations executed upon each of successive pairs of D/A converter outputs.