Apparatus and method for printing two-dimensional barcode and articles incorporating such barcode
US6631012B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2001 |
| Grant date | Oct 7, 2003 |
| Priority date | — |
| Expiry date | Dec 11, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K1/121
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system for printing a 2D-barcode corresponding to a binary data array and a substrate imprinted with such barcode. The barcode has I first columns of modules and J rows of modules transverse to columns. Each module having a one-to-one correspondence with a bit in a data array and comprising X columns and Y rows of pixels. All pixels are unprinted if said corresponding data bits for a module is not asserted; and otherwise: for pixel columns P(1) through P(X−H) and rows P(1) through P(Y−V), where H is in the range 0 to X−1 and V is in the range 0 to Y−1, all pixels are printed; for first columns P(X−H+1) through P(X) and rows P(1) through P(Y−V), all pixels are printed if a corresponding data bit for an adjacent module in the next module column is asserted; and for columns P(X−H+1) through P(X), rows P(Y−V+1) through P(Y) are not printed if a corresponding data bit for an adjacent or diagonally adjacent module in a next first is not asserted. H and V are not both equal to 0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.