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:
Apr. 01, 1986
Filed:
Sep. 07, 1983
Applicant:
Inventor:
Oliver L Richards, Jr, N. Grosvenor Dale, CT (US);
Assignee:
Sprague Electric Company, North Adams, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03J / ;
U.S. Cl.
CPC ...
455161 ; 455169 ; 455200 ; 455263 ; 455337 ;
Abstract
An integrated circuit AM radio receiver includes a scan-tuner comprised of a frequency synthesizer with micro-processor controller. The tuner stops scanning when an AGC derived signal increases beyond a predetermined level indicating a strong station and additionally when another signal falls below a predetermined level indicating that the radio is accurately tuned to the station frequency. The another signal is derived from an FM discriminator simultaneously using the same coil as is employed for tuning the last AM-IF stage.