Two-dimensional identification pattern, article including such a pattern, and methods for marking and identifying such a pattern

摘要

A method for marking an article with an identification pattern which may include information relating to the article and/or to the use thereof, the method including: defining an alphabet of a plurality of symbols; defining, for each symbol, at least two valid states and at least one invalid state; developing a reference pattern including a set of symbols from the alphabet; developing at least one representation of the reference pattern by allocating a specific valid state to each symbol of the reference pattern; and applying a marking, reproducing the representation of the reference pattern, onto the article.

主权项

1. A two-dimensional identification pattern, comprising:
an arrangement of representations of symbols belonging to an alphabet, each symbol of the alphabet comprising at least three states, including at least two valid states and at least one invalid state, each representation of a symbol in the arrangement corresponding to a valid state of the symbol, wherein each state of the symbols of the alphabet comprises a group of elements, each of the groups of elements comprising at least two elements, each element having a possible representation out of a set of representations comprising a first representation and a second representation distinct from the first representation, and each symbol comprises a first valid state comprising a first group of at least one element represented according to the first representation and at least one element represented according to the second representation, and a second valid state comprising a second group of at least one element represented according to the second representation and at least one element represented according to the first representation.