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:
Sep. 20, 2005
Filed:
Feb. 04, 2000
Applicants:
Joerg Hauptmann, Wernberg, AT;
Frederic Pecourt, Mouans-Sartoux, FR;
Aner Tenen, Petach Tikva, IL;
Inventors:
Assignee:
Infineon Technologies AG, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B001/38 ; H04L005/16 ;
U.S. Cl.
CPC ...
Abstract
The invention relates to an analog echo filter for a modem, to which an analog transmit signal is supplied. According to the invention, a passive analog input filter and an active analog filter, whose transfer function is adjustable, are provided. The transfer function of the active analog filter can preferably be switched between a first-order transfer function and a second-order transfer function.