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:
Sep. 24, 1991
Filed:
Oct. 04, 1989
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
An ultrasonic imaging apparatus comprises an ultrasonic transducer for outputting ultrasonic beams and converting echo waves of the ultrasonic beams to a B-mode echo signal corresponding to a B-mode for obtaining a tomographic image and a D-mode echo signal corresponding to a D-mode for obtaining Doppler data, a transmitter circuit for driving the transducer for generating the ultrasonic beams for scanning a subject, a receiver circuit including a gain control circuit for controlling the gain of the B-mode and D-mode echo signals output from the ultrasonic transducer so that the level of the B-mode echo signal is made to equal to that of the D-mode echo signal and for outputting gain-controlled echo signals, and A/D converter for converting the gain-controlled signals to digital signals, and a delay/addition circuit for delaying the digital signals and adding them to output a received signal, a B-mode processor circuit for producing a B-mode image signal from the received signal, a D-mode processor circuit for producing Doppler data from the received signal, and a display for displaying the B-mode image signal and D-mode data.