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. 17, 1996
Filed:
Nov. 21, 1994
Stephen L Daleo, Parkville, MO (US);
David D Boone, Lee's Summit, MO (US);
Other;
Abstract
A digital, differential signal processor for measuring, digitizing and storing a plurality of analog electrical potentials and for calculating selected potential differentials for display. Each analog, electrical potential is filtered and amplified in a signal conditioner and then its values at successive instants in time are converted to digital data by an analog to digital converter. The digital data that is output by the converter is stored for later recall. A computer calculates each selected differential potential by calculating the numerical difference between the digital data for the two potentials for which the differential is to be determined. The differential, as a function of time, may be displayed in real time or at a later time based upon the stored data. A multiplexer allows one analog to digital converter to process the signals output from a plurality of signal conditioners. The multiplexer, however, causes the instants in time, for which the digital data represents different potentials, to be offset in time with respect to each other. The invention uses numerical interpolation techniques to compensate for the non-simultaneous instants so as to allow calculation of the differentials as if the instants, at which the two potentials were measured, coincided in time.