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. 05, 1998
Filed:
Dec. 20, 1995
Daniel B Allison, Menlo Park, CA (US);
James O Bowlby, Jr, San Jose, CA (US);
The Perkin-Elmer Corporation, Foster City, CA (US);
Abstract
An improved signal processing method in a signal processor for performing the deconvolution of a signal resulting from an analytical separation process is disclosed. In a first aspect, a signal representing a plurality of partially separated sample zones is measured, a point-spread-function of the signal is determined, and the Fourier transform of the signal and the point-spread-function is taken. Next, a noise component n of the signal is determined and the value of a result signal A(f) is calculated using the following filter ##EQU1## where D(f) is the Fourier transform of the signal, P(f) is the Fourier transform of the point-spread-function, and P*(f) is the complex conjugate of P(i). Finally, the inverse Fourier transform of the result A(f) is taken and reported as A(t). Preferably, the point-spread function is a Gaussian function having a standard deviation .sigma., where .sigma. is determined using either an .alpha..beta. tracker or the function .sigma.=(a+bt.sup.2).sup.1/2, where a and b are constants. In a second aspect of the invention, a plurality of possible point-spread-functions of the signal are determined and the above-described method is applied using each PSF. The value of the largest point-spread-function which provides a nonnegative result is determined, and the associated value of A(t) is reported. In a third aspect of the invention, a program storage device readable by a machine, tangibly embodying a program of instructions executable by a machine to perform the method steps of the first or the second aspects of the invention is provided.