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. 26, 2007
Filed:
Aug. 03, 2001
Matthias Eichin, Heilbronn, DE;
Alexander Kurz, Schwaebisch-Hall, DE;
Karl-ulrich Stahl, Erfurt, DE;
Matthias Eichin, Heilbronn, DE;
Alexander Kurz, Schwaebisch-Hall, DE;
Karl-Ulrich Stahl, Erfurt, DE;
Vishay Semiconductor GmbH, Heilbronn, DE;
Atmel Germany GmbH, Heilbronn, DE;
Melexis GmbH, Erfurt, DE;
Abstract
In a method for interference suppression using a quality-adjustable bandpass filter in a receiver circuit for carrier-modulated received signals (S), the bandpass filtered received signal (B) is demodulated, and a switching process is triggered with the demodulated received signal (D). In order to eliminate internal or self-induced interferences that would be caused by a switching process in the output portion of the receiver, a quality reduction of the bandpass filter is correlated with the switching process that causes the interference. The method is especially suitable in connection with circuits for infrared receivers, which can thereby be manufactured in a small size, without external components, and thus economically.