Optical coding of position information on printed surfaces
US7209128B2 · kind B2 · utility
2Cited by
1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2003 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | May 3, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0321
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Optically detectable data encoding layouts for surfaces includes a primary lattice and a secondary lattice formed in interstitial areas between plural points on the primary lattice and one or more markings located on points on the secondary lattice. The primary lattice defines the layout of the secondary lattice. The data is encoded according to the positions of the markings on the secondary lattice. The layout provides absolute or relative page position encoding because, when the markings are imaged and decoded, the decoded data corresponds to the position of the corresponding marking on the surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.