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:
Jan. 26, 1982
Filed:
Apr. 21, 1980
Aloysius J Nijman, Eindhoven, NL;
Franciscus A Schoofs, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
Connecting circuit for a telephone line comprising a pair of amplifiers whose outputs are connected to the one and to the other wire of the telephone line, respectively. Longitudinal currents which are induced in the telephone line and may negatively affect the proper functioning of the connecting circuit constitute a problem. The connecting circuit uses four current detection circuits (3, 4, 5, 6) for separately detecting the positive and negative currents in the wires of the telephone line. These separately detected currents are processed so that the desired opeeration of the connecting circuit is maintained even in the presence of longitudinal currents which exceed the loop currents.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile