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. 30, 1976
Filed:
Jul. 09, 1975
Applicant:
Inventors:
Hans Rasehorn, Hildesheim, DT;
Jens Hansen, Hildesheim, DT;
Assignee:
Blaupunkt-Werke GmbH, Hildesheim, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ; H04B / ;
U.S. Cl.
CPC ...
325313 ; 325478 ;
Abstract
A pulse amplifier with its input across the power supply leads to an automobile radio receiver to be protected against pulse interference is used to operate a blanking gate interposed between the demodulator of the receiver and the low-frequency circuits thereof. One of the power supply leads is grounded to the vehicle body. A resistor in the ungrounded lead increases the sensitivity of the pulse interference suppression circuit without impairing receiver operation. The circuit provides interference suppression that is not dependent upon the receiver band width and therefore usable both for AM reception and for FM reception.