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. 08, 2025
Filed:
Jan. 05, 2023
Applicant:
Xerox Corporation, Norwalk, CT (US);
Inventor:
Edward N. Chapman, Rochester, NY (US);
Assignee:
Xerox Corporation, Norwalk, CT (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06T 1/00 (2006.01); G06F 21/16 (2013.01); G06F 21/10 (2013.01); H04N 1/32 (2006.01);
U.S. Cl.
CPC ...
G06F 21/16 (2013.01); G06T 1/00 (2013.01); G06F 21/1063 (2023.08); G06T 1/0021 (2013.01); H04N 1/32154 (2013.01);
Abstract
Methods, systems and security devices for rendering digital invisible ink, can involve representing an invisible item in a single color that is not discernable from white by a human eye, embedding the invisible item into white space of a digital document, and converting the invisible item into a visible item using a transform table that defines how to convert the single color of the invisible item so that the invisible item after a conversion to the visible item is discernable by the human eye.