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:
May. 29, 2001
Filed:
Feb. 23, 1998
Philippe Guntzburger, Dachstein, FR;
Jean-Yves Moraillon, Wolxheim, FR;
Thomson multimedia S.A., Boulogne Cedex, FR;
Abstract
The subject of the invention is a communications device connected in parallel with at least one item of communications apparatus on a transmission line (L,, L,). The device and the apparatus conform to a given template in terms of DC components. The device in accordance with the invention is characterized in that it comprises means (,, R,, R,, R,, D,, DZ) setting the operating point (X) in terms of DC component of the said device alone outside regions of the said template where the DC component of the current may be zero, means (R,, D,, D,, R,) of determining the DC component of the current flowing in the said device, means (,) of detecting a variation in the said DC current component. The invention applies particularly in the field of communication via the switched telephone network.