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. 16, 1982
Filed:
Jun. 04, 1980
Applicant:
Inventor:
Kazuyuki Suenaga, Noda, JP;
Assignee:
Victor Company of Japan, Ltd., Yokohama, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03D / ;
U.S. Cl.
CPC ...
329103 ; 329142 ; 329143 ; 358 23 ; 455214 ;
Abstract
An FM signal demodulating circuit comprises a peak differential type amplifier having two input terminals, a resonance circuit network connected between the two input terminals of the peak differential type amplifier, and a capacitor between the resonance circuit network and the ground. The resonance circuit network comprises a plurality of parallel resonance circuits which are connected in series and have respectively different parallel resonance frequencies. The demodulating circuit has a demodulating characteristic curve for demodulating FM signals having different carrier frequencies.