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:
Sep. 22, 1998
Filed:
Jan. 15, 1997
Applicant:
Inventor:
Yoshihito Shimazaki, Tokyo, JP;
Assignee:
Oki Electric Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03G / ;
U.S. Cl.
CPC ...
330129 ; 330279 ; 330289 ; 4552342 ;
Abstract
According to a first aspect of the invention, an automatic-gain-control circuit, which generates a control signal that controls the gain of a variable-gain element, modifies the control signal to compensate for changes in the gain control characteristic of the variable-gain element. According to a second aspect of the invention, the automatic-gain-control modifies a fixed value which is added to cancel a direct-current offset, the modification being made in response to changes in the gain control characteristic of the variable-gain element.