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. 27, 2005
Filed:
Aug. 14, 2002
Applicants:
Alberto Canella, Villach, AT;
Gerhard Noessing, Villach, AT;
Inventors:
Alberto Canella, Villach, AT;
Gerhard Noessing, Villach, AT;
Assignee:
Infineon Technologies AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M019/00 ;
U.S. Cl.
CPC ...
Abstract
A telephone system includes a transmission line for connection to at least one telephone and a telephone interface in communication with the transmission line. The telephone interface provides DC power when a telephone connected to the transmission line is in an off-hook state. A controller in communication with the telephone interface generates a pre-defined DC characteristic of the telephone interface, and a regulator in communication with the controller adaptively translates the DC characteristic.