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:
Nov. 13, 2007
Filed:
Aug. 23, 2002
Applicants:
Hannes Breitschädel, Vienna, AT;
Peter Schlager, Kirchberg a/d Pielach, AT;
Inventors:
Hannes Breitschädel, Vienna, AT;
Peter Schlager, Kirchberg a/d Pielach, AT;
Assignee:
AKG Acoustics GmbH, Wien, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03C 1/52 (2006.01); H04L 27/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A stereo multiplex encoder (MPX) for FM transmission with a digital signal processor utilizes residual sideband modulation in stereo transmission instead of the conventional double sideband modulation. The adjustment of the sampling frequency to the modulation frequency (fmod=fs/2) is carried out, so that the antialiasing filter of the DAC can be used which produces the residual sideband modulated signal.