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:
Jun. 14, 1994
Filed:
Aug. 20, 1992
Applicant:
Inventor:
Peter Haas, East Fairfield, VT (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324 7611 ; 364484 ;
Abstract
Fundamental frequency and period detector processes and systems which determine the end of a cycle of an ac waveform by using the characteristic of the integral of a single cycle of an ac waveform that the value of the integral at the end of the cycle is the same as at the cycle start despite cycle noise, multiple zero crossings and other cycle obscuration. These processes and systems use the cycle integral to self-synchronize with each cycle of an ac waveform. Formation of the cycle integral of each processed cycle is a useful by-product of the frequency and period detection processes and systems.