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:
Sep. 14, 1982
Filed:
Feb. 01, 1980
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04H / ; H03D / ;
U.S. Cl.
CPC ...
179 / ; 329135 ; 329167 ;
Abstract
An AM stereophonic demodulator circuit for an amplitude/angle modulation system, comprising an AM detector circuit for producing a stereophonic sum signal (L+R), an FM or PM detector circuit for producing a stereophonic difference signal (L-R), and control means for extracting a DC voltage proportional to an antenna input level from the AM detector circuit so as to use the DC voltage to control the gain and amplitude of an FM or PM detector stage including the FM or PM detector circuit.
Quick Actions:
Akitake, Isao. (1982). Am stereophonic demodulator circuit for amplitude/angle modulation system (U.S. Patent No. 4349696). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4349696
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile