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. 15, 2004
Filed:
May. 31, 2002
Stefan Groiss, Villach, AT;
Infineon Technologies AG, Munich, DE;
Abstract
An apparatus and method for evaluating a digital information signal to be transmitted. A superimposition of the information with an interference signal can endanger an error-free data transmission. In order to ensure a correct data transmission, the information signal is amplified with a variable gain, where the information signal has been band-pass-filtered and demodulated beforehand, and fed to an integral-action controller that keeps the gain of the amplifier at a value corresponding to a controller threshold. Advantageously, the integral-action controller has a shorter time constant for increasing the gain than for reducing it, with the result that the gain is increased more rapidly than it is reduced. Thus, the integral-action control of the gain ensures that the band-pass-filtered and demodulated information signal is above a digitization threshold during its pulses and below the digitization threshold during its pulse intervals.