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. 23, 1985
Filed:
Feb. 11, 1982
Applicant:
Inventors:
Kohei Ishizuka, Hachioji, JP;
Yasuhiro Kita, Hachioji, JP;
Narimichi Maeda, Tachikawa, JP;
Masahiro Koya, Mountain View, CA (US);
Kazuhiko Takaoka, Tokyo, JP;
Yoshiro Kokuryo, Kodaira, JP;
Assignees:
Hitachi, Ltd., Tokyo, JP;
Hitachi Denshi Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ; G01R / ;
U.S. Cl.
CPC ...
324 / ; 3241 / ; 364483 ;
Abstract
In a gain control circuit, an electric power calculating circuit is connected to a variable gain amplifier and a gain setting circuit for generating a gain control signal applied to the variable gain amplifier to control the gain thereof.