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:
Feb. 14, 2012
Filed:
Dec. 20, 2007
Applicants:
Scott L. Colston, Dundee, GB;
Barrie Clark, Dundee, GB;
Inventors:
Scott L. Colston, Dundee, GB;
Barrie Clark, Dundee, GB;
Assignee:
NCR Corporation, Duluth, GA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods and apparatus for media characterization in a self-service terminal are described. The media us characterized in the self-service terminal by passing it by two electrodes and measuring the impedance across those two electrodes. The media is characterized by analyzing the measured impedance. The impedance may be measured by applying a modulated reference signal to one electrode and detecting the current on the second electrode. In an embodiment, the detected current may be converted into a voltage signal and mixed with a phase shifted version of the modulated reference signal.