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. 12, 1983
Filed:
May. 14, 1981
Tomoshisa Yokogawa, Saitama, JP;
Shintaro Gomi, Saitama, JP;
Pioneer Electric Corporation, Tokyo, JP;
Abstract
An input signal level control device for a receiver particularly adapted for use in a mobile FM receiver in which the received electric field strength changes abruptly and greatly. An attenuating device such as a switching diode is coupled to an input of a high frequency amplifier to which the input received signal is fed. The attenuating device switches on when the received electric field strength reaches the first predetermined value. As the electric field strength continues to increase and reaches a second value greater than the first, a control circuit controls the gain of the high frequency amplifier in accordance with the electric field strength.