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:
Oct. 19, 1999
Filed:
Mar. 26, 1997
Alexander Kahl, Villach, AT;
Peter Caldera, Villach, AT;
Joerg Hauptmann, Villach, AT;
Franz Dielacher, Villach, AT;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A circuit configuration for line adaptation and echo suppression includes a balance filter which is triggered by transmission signals and supplies output signals that are linked through a subtractor to a reception signal. An impedance adaptation filter is triggered by the reception signal and supplies an output signal that is linked through an adder to the transmission signal. An analog/digital converter converts analog reception signals into digital reception signals. A digital/analog converter converts digital transmission signals into analog transmission signals. The impedance adaptation filter processes digital signals and the balance filter processes analog signals.