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:
Oct. 02, 2012
Filed:
Feb. 28, 2007
Katsuyuki Takahashi, Tokyo, JP;
Katsuyuki Takahashi, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
An automatic gain control apparatus can prevent jumps in the gain coefficient when the gain coefficient is altered, due to a sharp change in the level of the received signal before and after the alteration. The apparatus includes a mean square circuit for processing the received signal, a gain coefficient generating circuit for generating a gain coefficient, a decision circuit for deciding whether the received level of the received signal has changed, and a control circuit for, when a change in the received level of the received signal is detected, determining a number of mean square values and a generating interval. The apparatus further includes a gain coefficient linear smoother for altering the gain coefficient over an interval, and a multiplier for multiplying the received signal by the gain coefficient obtained from the gain coefficient linear smoother.