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:
Jul. 09, 2013
Filed:
Sep. 13, 2012
Ta-hsin LI, Danbury, CT (US);
Ta-Hsin Li, Danbury, CT (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method of analyzing a spectrum of one-dimensional or multi-dimensional signal X(t) requires a number of steps including deriving coefficients [A(ω), B(ω)] of an Lp-norm harmonic regression of the signal with 0<p≦∞ and p≠2, squaring the coefficients, summing the squared coefficients, and scaling the summed, squared coefficients with a constant c to realize a periodogram of X(t) as L(ω)=c{[A(ω)]+[B(ω)]}. The method may include receiving the signal X(t), storing the received signal X(t), and outputting the periodogram L(ω). The method may still further include scanning to maximize the periodogram L(ω) by identifying its largest peak(s) and comparing the amplitude of the identified largest peak(s) with a threshold to determine if the largest peak(s) is(are) attributable to a presence of a periodic signal.