Phase locked IR encoding for peened 2D barcodes
US8261988B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2009 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Dec 23, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system reveals a 2D barcode in a document. A 2D barcode generator selects the placement and at least one colorant combination of an image and at least one colorant combination for a 2D barcode on a document, where the at least one colorant combination of the image and the 2D barcode form a metameric pair. A print system receives data from the 2D barcode generator and places the image and the 2D barcode on the document. A light source selected or tuned to a wavelength corresponding to the colorant combinations utilized by the print system reveals the 2D barcode placed thereon. A decoding element decodes and extracts data from the revealed 2D barcode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.