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:
Nov. 19, 2019
Filed:
May. 14, 2019
Nthdegree Technologies Worldwide Inc., Tempe, AZ (US);
Steven B. Roach, Gilbert, AZ (US);
Richard A. Blanchard, Los Altos, CA (US);
Eric W. Kahrs, Phoenix, AZ (US);
Larry Todd Biggs, Queen Creek, AZ (US);
Chye Kiat Ang, Singapore, SG;
Mark D. Lowenthal, Vancouver, WA (US);
William J. Ray, Fountain Hills, AZ (US);
Nthdegree Technologies Worldwide Inc., Tempe, AZ (US);
Abstract
In one embodiment, an authentication area on a portable object comprises a random arrangement of printed LEDs and a wavelength conversion layer. The object to be authenticated may be a credit card, casino chip, or other object. When the LEDs are energized during authentication of the object, the emitted spectrum and/or persistence of the wavelength conversion layer is detected and encoded in a first code, then compared to valid codes stored in the database. If there is a match, the object is authenticated. The LED power may be remotely inductively coupled and may flash the LEDs, while the wavelength conversion layer emission slowly decays during its optical detection. The flash of blue LED light may be emitted from the edges of the object, which may act as a light guide, for optical feedback to the user that the object is being authenticated.