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:
May. 07, 1991
Filed:
Feb. 08, 1989
Applicant:
Inventor:
Alexander Mofachern, Oakland, CA (US);
Assignee:
Basic Measuring Instruments, Foster City, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
36457104 ; 36457107 ; 324 / ; 73 / ;
Abstract
The present invention improves the accuracy of waveshape measurements and transducers. Specifically, it is a method and apparatus which calibrates a system, which comprises transducers, amplifiers, filters and analog-to-digital converters, by digitally removing phase and amplitude errors over a frequency spectrum.