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:
May. 26, 2020
Filed:
Nov. 26, 2014
Applicant:
Zengar Institute Inc., Victoria, CA;
Inventor:
Kenneth MacCallum, Victoria, CA;
Assignee:
Zengar Institute Inc., Victoria, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B 5/00 (2006.01); A61B 5/0428 (2006.01); A61B 5/04 (2006.01); G01R 19/00 (2006.01); H03F 1/38 (2006.01); G01R 23/165 (2006.01); G01R 23/167 (2006.01); A61B 5/0482 (2006.01); A61B 5/0488 (2006.01);
U.S. Cl.
CPC ...
A61B 5/7225 (2013.01); A61B 5/04004 (2013.01); A61B 5/0428 (2013.01); A61B 5/0482 (2013.01); A61B 5/0488 (2013.01); A61B 5/04284 (2013.01); A61B 5/725 (2013.01); G01R 19/0023 (2013.01); G01R 23/165 (2013.01); G01R 23/167 (2013.01); H03F 1/38 (2013.01); H03F 2200/261 (2013.01);
Abstract
A sensor circuit usable with capacitive sensors in an electrical potential sensing network is provided. The sensor circuit provides bias current while maintaining a high input impedance for signals in a frequency band of interest by positive feedback of a filtered measurement through a finite impedance. The sensor circuits are suited for technologies such as, but not limited to electroencephalography (EEG), electromyography (EMG) and electrocardiograms (ECG). A neurofeedback system utilizing the capacitive conduction sensor is also described.