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:
Jul. 25, 1978
Filed:
Apr. 07, 1977
Applicant:
Inventor:
Yoichi Tan, Tokyo, JP;
Assignee:
Nippon Electric Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03D / ;
U.S. Cl.
CPC ...
329122 ; 325419 ;
Abstract
An FSK demodulator is provided with an AFC circuit. The AFC circuit is a negative feedback loop having at least n stable points corresponding to n-level transmitting frequencies. The cut-off frequency of the negative feedback loop is selected higher than the cut-off frequency of the low frequency components from the n-level signals containing a D.C. component which are used to generate the transmitting frequencies.
Quick Actions:
Tan, Yoichi. (1978). Fsk demodulator (U.S. Patent No. 4103244). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4103244
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