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:
Sep. 03, 2019
Filed:
Jun. 13, 2018
Nthdegree Technologies Worldwide Inc., Tempe, AZ (US);
Steven B. Roach, Gilbert, AZ (US);
Richard A. Blanchard, Los Altos, CA (US);
Eric 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, a printed LED area comprises a random arrangement of printed LEDs and a wavelength conversion layer. The LED area is embedded in an object to be authenticated, such as a credit card or a casino chip. The object may include a light guide for enabling the generated light to be emitted from any portion of the object. In one embodiment, when the LEDs are energized during authentication of the object, the existence of light emitted by the object is sufficient authentication and/or provides feedback to the user that the object is being detected. For added security, the emitted spectrum vs. intensity and 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.