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. 27, 1993
Filed:
Mar. 31, 1992
Applicant:
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ; H04N / ;
U.S. Cl.
CPC ...
330254 ; 358176 ;
Abstract
In a signal level control circuit a gain of a current obtained by converting an input signal is controlled by an external control signal in order to automatically control the level of the input signal. The potential of a resistor with a temperature characteristic is set by a voltage determined by the product of an external reference current and an internal resistance so that the temperature characteristic of a current output through the resistor with the temperature characteristic can be removed.