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:
May. 21, 1985
Filed:
Jan. 13, 1983
Applicant:
Inventor:
Orval E Beckman, Wheaton, IL (US);
Assignee:
Zenith Radio Corporation, Glenview, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358198 ; 358144 ; 329137 ;
Abstract
A television receiver includes an integrated circuit audio system suitable for stereo sound, and a source of angle-modulation audio waves supplied from a limiter/integrator to a differential amplifier detector. A series parallel arrangement of elements in a first phase shift network has the parallel connected elements coupled across the inputs of the differential amplifier detector. A second phase shift network, coupled directly across the limiter/integrator output, loads the first phase shift network and linearizes the audio system output over a large signal deviation. The output of the differential amplifier detector supplies the detected audio output.