Marking comprising two patterns on a surface
US9747473B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2014 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Dec 15, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/06093
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Marking comprising on a surface: a first pattern for coding a first numerical information item on said surface, the first pattern comprising a specific arrangement of a plurality of symbols belonging to a set of symbols, each symbol in the arrangement being intended for the coding of a portion of said numerical information item, each symbol including at least one differential pair of elements positioned in a specific way, each element having a parameter, the parameter of the first element of each differential pair having a first value and the parameter of the second element of each differential pair having a second value different from the first value, a second pattern for coding a second numerical information item on said surface, wherein the first and second pattern are adapted to be read under corresponding distinct first and second reading conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.