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:
Apr. 12, 2016
Filed:
Sep. 03, 2014
Real Tek Semiconductor Corporation, Hsinchu, TW;
Chih-Kang Chien, Hsinchu, TW;
REALTEK SEMICONDUCTOR CORPORATION, Hsinchu, TW;
Abstract
The present invention discloses an impedance detecting device capable of detecting the impedance value of a load, comprising: an AC signal generating circuit for generating an AC signal; an output buffer for generating an output voltage and an output current according to the AC signal and the impedance value of the load; a current mirror for generating a mirror current according to the output current; a detection impedance for generating a detection voltage according to the mirror current; a comparing circuit for generating a comparison result by comparing the output voltage with the detection voltage; and a control circuit for adjusting at least one of a current ratio of the mirror current to the output current and the impedance value of the detection impedance according to the comparison result until the comparison result has satisfied a predetermined requirement.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile