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. 04, 2006
Filed:
Mar. 11, 2005
Pietro Lendi, Uznach, CH;
Werner Tschopp, Forch, CH;
Pietro Lendi, Uznach, CH;
Werner Tschopp, Forch, CH;
Bruker Biospin AG, Faellanden, CH;
Abstract
A method for operating a magnetic resonance spectrometer with a digital filter whose input is fed with an NMR signal of a time length T, and whose output signal consists of a rising oscillation Bof a length T, a signal portion [F]' which consists of a filtered FID or echo signal of the length Tand a decaying oscillation Bof a length T, wherein this output signal is initially modified using a calculation process RV, and is subsequently transformed by Fourier transformation to a desired NMR spectrum, is characterized in that, during the calculation process RV, only the signal portion [F]′ is initially selected, at least N copies of the rising oscillation Bare subsequently generated in positive time shifts Twith respect to each other and are positioned on the signal portion [F′] in time such that the end of the first rising oscillation is positioned at the end of the signal portion, at least N copies of the decaying oscillation Bare generated in negative shifts Tand are positioned on the signal portion [F′] in time such that the start of the first decaying oscillation is positioned at the start of the signal portion [F′], and all N copies of the rising oscillation Bdefined in this manner and N copies of the decaying oscillation Bdefined in this manner are added to the signal portion [F′], and only the range Tthereof which contains the signal portion [F′] is selected as resulting signal F″ of the calculation process RV, wherein the number N is to be calculated using the formula N=T/Tand rounded to the next higher integer number. This exactly compensates for the influence of the group delay time of digital, linear-phased filters in a mathematically exact manner.