System and method for determining positional information
US6689966B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 21, 2001 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Sep 2, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/19
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A product has a surface having with a position-coding pattern that codes a plurality of positions on the surface. The position-coding pattern includes a plurality of symbols each having at least two different values. Each position on the surface being coded with a plurality of symbols. Each symbol including a raster point in a raster extending over the surface, and at least one marking, the location of which in relation to the raster point specifies the value of the symbol. The markings can include information representing more than one spatial resolution level and varying between different markings. The position-coding pattern can be used in different contexts for position determination such as digitizing handwriting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.