Security arrangements for printed documents

Details Security arrangements for printed documents Security arrangements for printed documents

2006-01-17

2006-01-17

Wu, Jingge (Department: 2623)

Image analysis

Applications

C345S581000, C345S582000, C283S057000, C283S113000

Reexamination Certificate

active

06987861

ABSTRACT:
A security feature, by which a genuine document can readily be visually distinguished from a reproduction, employs finely detailed, laterally spaced structures to yield the illusion of a 3D texture. When replicated using commonly-available scanning or printing devices, the fine detail is lost, and with it the 3D illusion.

REFERENCES:
patent: 6036232 (2000-03-01), Kaule et al.
patent: 6091421 (2000-07-01), Terrasson
patent: 6369919 (2002-04-01), Drinkwater et al.
patent: 6443494 (2002-09-01), Lieberman Zadjman et al.
patent: 6608911 (2003-08-01), Lofgren et al.
patent: 6753989 (2004-06-01), Holmes et al.
patent: 6782115 (2004-08-01), Decker et al.
patent: 6822769 (2004-11-01), Drinkwater et al.
patent: 2002/0117845 (2002-08-01), Ahlers et al.
patent: 2003/0026613 (2003-02-01), Holmes et al.
Steer, W.A., Stereograms: Introduction, Oct. 12, 2001, www.techmind.org/stereo/sintro.html, 3 pages.
Steer, W.A., Stereograms: Technical Details, Oct. 12, 2001, www.techmind.org/stereo/stech.html, 17 pages.

Affiliated with

Also associated with

Rating

Security arrangements for printed documents does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Security arrangements for printed documents, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Security arrangements for printed documents will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3550436