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:
Dec. 16, 1980
Filed:
Mar. 13, 1978
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ; H04N / ;
U.S. Cl.
CPC ...
330149 ; 330107 ; 358-8 ; 358127 ;
Abstract
In a circuit including an amplifier for amplifying a small signal from a signal source wherein the inductance of a transducer and the capacitance of a capacitor form a resonance circuit, the output from the amplifier is negatively fed back through a resistor or a combination of resistors to the input of the amplifier, whereby the noise in the demodulated signal may be suppressed.