Coding pattern with replicated local tag data in each tag
AssigneeSilverbrook Research Pty Ltd
InventorsPaul Lapstun, Kia Silverbrook
Life of this patent
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Abstract
A substrate having a coding pattern disposed on a surface thereof. The coding pattern comprises a plurality of target elements defining a target grid. The target grid comprises a plurality of cells, wherein neighboring cells share target elements. A plurality of data elements are contained in each cell. Tags are defined by a plurality of contiguous cells and each tag comprises respective local tag data encoded by a respective set of the data elements. Each tag comprises a plurality of replications of the local tag data. Any tag-sized portion of the coding pattern is guaranteed to contain the local tag data irrespective of whether a whole tag is contained in the portion.
Claims20
A substrate having a coding pattern disposed on a surface thereof, said coding pattern comprising:
- a plurality of target elements defining a target grid, said target grid comprising a plurality of cells, wherein neighboring cells share target elements;
- a plurality of data elements contained in each cell;
- and
- a plurality of tags, each tag being defined by a plurality of contiguous cells, each tag comprising respective local tag data encoded by a respective set of said data elements, wherein each tag comprises a plurality of replications of said local tag data, such that any tag-sized portion of said coding pattern is guaranteed to contain said local tag data irrespective of whether a whole tag is contained in said portion.
Dependencies are inferred from the claim text.