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:
Jan. 02, 2007
Filed:
Nov. 30, 2001
Petri Heliö, Tampere, FI;
Tomi-pekka Takalo, Pirkkala, FI;
Petri Heliö, Tampere, FI;
Tomi-Pekka Takalo, Pirkkala, FI;
Nokia Corporation, Espoo, FI;
Abstract
The invention relates to a method for tuning a filter (). The filter has at least one variable time constant, by which the location of the pass band (pc) of said at least one filter can be changed. In the method, at least one reference signal is inputted in said filter (), and the frequency of said at least one reference signal is changed, and/or said at least one time constant of the filter () is changed. The method also comprises the steps of measuring the strength of the output signal of the filter () and determining, on the basis of the measurement on the strength of the output signal of the filter (), the location of the pass band of said filter ().