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:
Oct. 02, 2012
Filed:
Aug. 14, 2009
Karen D. Lontka, Randolph, NJ (US);
Karen D. Lontka, Randolph, NJ (US);
Siemens Industry, Inc., Alpharetta, GA (US);
Abstract
An arrangement includes an input, a modulation circuit, an isolation circuit, a demodulator circuit, a detector circuit and at least two outputs. The input is configurable to receive an audio signal and a DC voltage. The modulation circuit is configured to modulate the audio signal and the DC voltage. The isolation circuit has an input electrically isolated from the output, wherein its input coupled to the modulation circuit. The demodulator circuit is operably coupled to the output of the isolation circuit and configured to extract the audio signal therefrom. The detector circuit is operably coupled to the output of the demodulator, and is configured to generate a first signal responsive to detection of a modulated signal corresponding to the DC voltage modulated by the modulation circuit.