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. 25, 1984
Filed:
Oct. 27, 1982
Applicant:
Inventors:
James K Riley, Shingle Springs, CA (US);
William R Hardin, North Highlands, CA (US);
Assignee:
General Electric Company, Rancho Cordova, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73520 ; 73620 ; 73629 ;
Abstract
The amplitudes of electrical signals generated by a transducer in an ultrasound scanning system are controlled by applying the electrical signals to an electrical filter whose frequency pass characteristics can be varied. As the ampltude and frequency of the generated electrical signals decrease due to passage through tissue, the low frequency of the filter is reduced. The control of the filter can be automatically implemented or can be manually implemented by the system operator.