Coding scheme for encoded sheet material
AssigneeXerox Corporation
InventorJean-Luc Meunier
Life of this patent
Estimating the term…
Abstract
An edge coding scheme for an encoded sheet material includes an offset mark located at an offset distance from a reference mark on the edge of the sheet material and a plurality of equally spaced clock marks disposed along the edge, such that the offset distance can be approximated by the product of the number of clock marks between the reference mark and the offset mark times the distance between successive clock marks. Another embodiment of the edge coding scheme includes coincidence between a first plurality of equally spaced apart clock marks and a second plurality of equally spaced Vernier marks, wherein the second plurality is less than the first plurality.
Claims23
An encoded sheet material, comprising:
- a sheet of material having a first surface, a second surface disposed opposite the first surface and an edge extending between the first surface and the second surface and peripherally about the sheet of material, the edge having indicia arranged thereon to form a code uniquely identifying the sheet of material;
- wherein the code comprises an offset mark located at an offset distance from a reference mark on the edge and a plurality of equally spaced clock marks disposed along the edge, such that the offset distance can be approximated by a product of a number of clock marks between the reference mark and the offset mark multiplied by the times (distance between successive clock marks).
An encoded sheet material, comprising:
- a sheet of material having a first surface, a second surface disposed opposite the first surface and an edge extending between the first surface and the second surface and peripherally about the sheet of material, the edge having indicia arranged thereon to form a code uniquely identifying the sheet of material;
- wherein the code comprises coincidence between a first plurality of equally spaced apart clock marks disposed along the edge and a second plurality of equally spaced Vernier marks, wherein the second plurality is less than the first plurality.
A method of decoding an encoded sheet material, wherein the encoded sheet material includes a sheet of material having a first surface, a second surface disposed opposite the first surface and an edge extending between the first surface and the second surface and peripherally about the sheet of material, the edge having indicia arranged thereon to form a code uniquely identifying the sheet of material, comprising:
- scanning the edge code;
- detecting any offset marks on the edge;
- detecting any clock marks on the edge;
- counting the clock marks between a reference mark on the edge and the offset mark;
- measuring a distance between the offset mark and an adjacent clock mark;
- and
- computing a sum of the distance between the offset mark and the adjacent clock mark and a product of a number of clock marks between the reference mark and the offset mark multiplied by the times (distance between clock marks).
A method of decoding an encoded sheet material, wherein the encoded sheet material includes a sheet of material having a first surface, a second surface disposed opposite the first surface and an edge extending between the first surface and the second surface and peripherally about the sheet of material, the edge having indicia arranged thereon to form a code uniquely identifying the sheet of material, comprising:
- scanning the edge code;
- detecting any clock marks on the edge;
- detecting any Vernier marks on the edge;
- detecting coincidence between the detected clock marks and the detected Vernier marks;
- and
- determining an offset distance using the coincidence between the detected clock marks and the detected Vernier marks.
Dependencies are inferred from the claim text.