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:
Jun. 29, 2010
Filed:
Feb. 06, 2008
Applicant:
Hui-yen Hsieh, HsinChu, TW;
Inventor:
Hui-Yen Hsieh, HsinChu, TW;
Assignee:
Chip Goal Electronics Corporation, Hsin-Chum, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B 11/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention discloses a servo control circuit comprising: a first node for receiving a control voltage; a second node for receiving a feedback voltage; an operational amplifier controlling a current on a path according to the voltages at the first and second nodes, the path including an internal voltage node thereon; an analog to digital converter (ADC) for converting the voltage at the internal voltage node to a digital signal; and a control logic circuit for generating a servo control signal according to the digital signal.