Invention Grant
- Patent Title: Three-dimensional authentication of microparticle mark
- Patent Title (中): 微粒的三维认证
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Application No.: US11685759Application Date: 2007-03-13
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Publication No.: US07831042B2Publication Date: 2010-11-09
- Inventor: Thomas Stierman , Dan Hunt , Chris Zdon
- Applicant: Thomas Stierman , Dan Hunt , Chris Zdon
- Applicant Address: US MN Arden Hills
- Assignee: SMI Holdings, Inc.
- Current Assignee: SMI Holdings, Inc.
- Current Assignee Address: US MN Arden Hills
- Agency: Patterson Thuente Christensen Pedersen P.A.
- Main IPC: G06F11/30
- IPC: G06F11/30

Abstract:
A system, method, and apparatus for authenticating microparticle marks or marks including other three-dimensional objects. The authentication utilizes two or more sets of information captured or acquired for the mark in response to illumination of the mark by electromagnetic energy such as in the visible frequency range. These sets of information are then used to verify that the mark includes three-dimensional objects such as microparticles. The two or more sets of information about the mark preferably vary from each other in time, space/directionality, color, frequency or any combinations thereof, and can be captured or acquired as part of one, two, or more images of the microparticle mark.
Public/Granted literature
- US20080034426A1 THREE-DIMENSIONAL AUTHENTICATION OF MICROPARTICLE MARK Public/Granted day:2008-02-07
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