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:
Nov. 02, 2010
Filed:
Mar. 27, 2006
James Russell Hornsby, St. Louis, MO (US);
Marcellus Rambo Benson, Chesterfield, MO (US);
James Augustus Keefe, Iii, O'Fallon, MO (US);
Joseph Lee Mcgowan, St. Charles, MO (US);
Ashley B. Hornsby, Clayton, MO (US);
James Russell Hornsby, St. Louis, MO (US);
Marcellus Rambo Benson, Chesterfield, MO (US);
James Augustus Keefe, III, O'Fallon, MO (US);
Joseph Lee McGowan, St. Charles, MO (US);
Ashley B. Hornsby, Clayton, MO (US);
Cepia, LLC, St. Louis, MO (US);
Abstract
An economical system and method for extracting amplitude and frequency information from a modulated AC signal are provided. In one embodiment, the invention includes a circuitry implementing op amps, a dual diode, a filter, and a comparator to receive and manipulate the modulated AC signal. The dual diode receives and splits the AC signal into two separate paths, including a baseline path and a filtering path. The AC signal passing through the baseline path remains substantially unchanged, and the AC signal passing through the filtering path passes through a low-pass filter. The signal is then sent through a comparator for comparing amplitudes of the AC signal from the two paths, and the comparator output is received by a microprocessor for controlling a display that generates a visual indicia responsive to the comparator output.