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. 04, 2011
Filed:
Jan. 12, 2010
Applicant:
Liang-hui LI, Tainan, TW;
Inventor:
Liang-Hui Li, Tainan, TW;
Assignee:
Realtek Semiconductor Corp., Hsinchu, TW;
Primary Examiner:
Int. Cl.
CPC ...
G06G 7/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a gain control circuit, which detects an output signal of a front-end circuit to produce a detection signal. An operation unit performs an accumulation operation to the detection signal and thereby produces an operation signal. In addition, the operation unit also resets the operation unit according to a reset signal. A reset unit produces the reset signal for every predetermined interval of time. A control unit produces a control signal according to the operation signal and a first threshold value for controlling an output gain of the front-end circuit.