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. 14, 1981
Filed:
Oct. 01, 1979
Applicant:
Inventors:
Ernst Schroder, Hanover, DE;
Jurgen Wermuth, Stederdorf, DE;
Assignee:
Licentia Patent-Verwaltungs-G.m.b.H., Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03G / ; H03H / ; H03B / ;
U.S. Cl.
CPC ...
330278 ; 330282 ; 333 14 ;
Abstract
In a circuit for automatic dynamic compression or expansion the control voltage generator generates a control voltage which is linear against the logarithm of the input amplitude. This characteristic is achieved by a transfer member consisting of several transistors which are subject to different reference voltages and the series resistances of which are staggered.
Schroder, Ernst. (1981). Circuit for the generation of a control variable for the control of the (U.S. Patent No. 4278945). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4278945
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