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. 23, 2007
Filed:
Jun. 07, 2005
Applicants:
Yu-jui Chang, Tainan County, TW;
Ying-lieh Chen, Tainan County, TW;
Inventors:
Yu-Jui Chang, Tainan County, TW;
Ying-Lieh Chen, Tainan County, TW;
Assignee:
Himax Technologies Limited, Fonghua Village, Sinshih Township, Tainan County, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 1/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
An operational amplifier circuit includes an operational amplifier, a bias current provider, and a control circuitry. The operational amplifier drives a load according to an input signal. The bias current provider is coupled to the operational amplifier and provides a bias current to the operational amplifier. The control circuitry is coupled to the bias current provider and controls the bias current provider to adjust the bias current according to an operating status of the operational amplifier circuit.