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:
Jun. 21, 1994
Filed:
Jun. 16, 1993
Applicant:
Inventor:
Jean-Luc Le Corre, Quimper, FR;
Assignee:
Matra Communication, Quimper, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
379373 ; 379390 ; 379395 ; 379418 ;
Abstract
The ringer comprises a loudspeaker receiving signals from an amplifier, the amplifier having both a power supply input connected to a ringer line providing a ringer signal via a chopper power supply means, and a melody input which is connected to the ringer line via a regulation unit that provides an image signal representative of the power of the ringer signal, and via a transformation unit that transforms the image signal by means of a melody signal applied to a terminal.