Authentication devices
AssigneeWaitak Labels Factory Limited
InventorsTak Wai Lau, Wing Hong Lam
Life of this patent
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Abstract
An authentication device comprising a woven authentication pattern, wherein the woven authentication pattern comprises a plurality of pattern forming woven elements each defining at least one pattern defining element or a plurality of pattern defining elements, and each pattern forming woven element is formed by a plurality of threads having contrasting optical or visual properties in twisted mutual engagement, wherein said pattern defining element has a spiralling outline or boundary and adjacent or abutting pattern defining elements of a pattern forming woven element are visually or optically distinguishable.
Claims14
A woven authentication device comprising a woven authentication pattern, wherein the woven authentication pattern comprises a plurality of pattern forming woven elements each defining at least one pattern defining element or a plurality of pattern defining elements, and each pattern forming woven element is formed by a plurality of threads having contrasting optical or visual properties in twisted mutual engagement, wherein said pattern defining element has a spiralling outline or boundary and adjacent or abutting pattern defining elements of a pattern forming woven element are visually or optically distinguishable, further comprising
- an identification pattern which contains identification data, wherein the identification data are human readable or are process-able by a processor-based or computer-based device to retrieve a reference pattern or patterns for verifying authenticity with respect to the authentication pattern;
- wherein the identification data is formed by a plurality of woven identification elements and area density of the woven identification elements is substantially lower than area density of the pattern forming woven elements;
- the identification data contains information on location of a pattern storage device from which the reference pattern or patterns for verifying authenticity is retrievable;
- or the authentication pattern and the identification pattern are woven as an integral and flexible woven piece.
A woven authentication device comprising a woven authentication pattern and a woven identification pattern,
- wherein the woven authentication pattern comprises a plurality of threads of contrasting optical or visual properties in twisted mutual engagement and forming a row of pattern forming woven elements or a plurality of rows of pattern forming woven elements, wherein adjacent pattern forming woven elements on a row are separated by a woven partitioning element;
- wherein the pattern forming woven element comprises a plurality of pattern defining elements, the pattern defining element having a spiraling or helical boundary, and wherein the pattern defining elements are in twisted mutual engagement and having contrasting optical or visual properties, and
- wherein the woven identification pattern contains an identification data which is formed by a plurality of woven identification elements, and wherein the identification data contains information on location of a pattern storage device from which a reference pattern or patterns for verifying authenticity of the woven authentication pattern is retrievable.
A woven authentication device comprising a woven authentication pattern, wherein the woven authentication pattern comprises a string which is formed by twisted mutual engagement of a plurality of threads, and the threads have contrasting optical or visual properties,
- wherein the string extends along a longitudinal direction, has a transversal extent and is partitioned into a plurality of length portions to define a corresponding plurality of pattern forming woven elements, the plurality of pattern forming woven elements being distributed in series or consecutively to form a row of pattern forming woven elements;
- wherein each pattern forming woven element has a transversal extent and comprises one pattern defining element or a plurality of pattern defining elements;
- and wherein each one of the pattern defining elements has an external boundary, and the external boundary comprises two spaced apart external boundary outlines which cooperate to define the transversal extent of the pattern forming woven elements and the transversal extent of the string;
- and
- wherein the woven authentication pattern comprises a plurality of N pattern forming woven elements, and the N pattern forming woven elements contain M pattern defining elements, both M and N are integers and M≥N;
- and wherein adjacent or abutting pattern defining elements of a pattern forming woven element are visually differentiable or distinguishable from each other, and wherein M is equal to or larger than 2N.
Dependencies are inferred from the claim text.