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. 15, 1991
Filed:
Nov. 08, 1990
Applicant:
Inventor:
Martin Winterer, Gundelfingen, DE;
Assignee:
Deutsche ITT Industries GmbH, Freiburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03C / ; H04N / ;
U.S. Cl.
CPC ...
332119 ; 332123 ; 358330 ; 358 23 ; 360 30 ; 375 44 ; 455 43 ; 455110 ;
Abstract
In a frequency modulation system, a modulating signal is split into its low-frequency and high-frequency components. The low frequency component is used to modulate a carrier signal by conventional means in a first circuit and the low- and high-frequency components are used to narrowband modulate the carrier signal in a second circuit. The outputs of the first and second circuits are combined to provide a frequency modulated signal. The modulating and carrier signals can be binary-coded signals.