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:
Dec. 05, 1995
Filed:
Sep. 02, 1994
Gerald Wallnberger, Villach, AT;
Herbert Zojer, Koetschach, AT;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A circuit configuration for the generation of a line terminating impedance includes a two-wire to four-wire converter having a transfer function. An analog impedance network has a transfer function and input and output sides being connected through the two-wire to four-wire converter to a line. A digital impedance network has a transfer function and is connected in parallel with the analog impedance network through an analog-digital converter unit and a digital-analog converter unit. A real portion of a sum of the transfer function of the analog impedance network and a product of the transfer functions of the analog-digital converter unit, the digital impedance network and the digital-analog converter unit, multiplied by the transfer function of the two-wire to four-wire converter, is greater than -1.