Encoded substrate, coordinate-positioning system and method thereof

A coordinate positioning method adapted to an encoded substrate, wherein a plurality of objects are arranged on the encoded substrate, the encoded substrate includes a plurality of grids arranged in a two-dimensional array, and the method includes:

• capturing the encoded substrate and the plurality of objects to generate an image by a camera device;
• scanning the plurality of grids from the image by a processor;
• in a first-dimensional direction, locating M grids arranged continuously from the plurality of grids;
• in a second-dimensional direction, locating N grids arranged continuously from the plurality of grids;
• generating a first coordinate according to M first-dimensional encoded values corresponding to M first patterns;
• generating a second coordinate according to N second-dimensional encoded values corresponding to N second patterns, wherein M, N are positive integers;
• and
• outputting a positioning coordinate according to the first coordinate and the second coordinate;
• wherein
• the M grids corresponding to the M first patterns are not covered by the objects;
• the N grids corresponding to the N second patterns are not covered by the objects;
• and
• one of the M grids is the same as one of the N grids;
• wherein each of the plurality of grids includes a first pattern and a second pattern, with the first pattern not overlapping the second pattern, the first pattern corresponds to a first-dimensional encoded value and the second pattern corresponds to a second-dimensional encoded value the plurality of grids includes a first grid and a second grid adjacent to the first grid, the first pattern in the first grid is not adjacent to the first pattern in the second grid, the second pattern in the first grid is not adjacent to the second pattern in the second grid.

A coordinate positioning system, comprising:

• an encoded substrate;
• a camera device, used to capture the encoded substrate to generate an image;
• and
• a processor, electrically connected to the camera device, and the processor is used to execute a coordinate positioning method according to the image to generate a positioning coordinate;
• wherein the encoded substrate comprises a plurality of grids arranged in a two-dimensional array, wherein each of the plurality of grids includes a first pattern and a second pattern, with the first pattern not overlapping the second pattern, wherein the first pattern corresponds to a first-dimensional encoded value and the second pattern corresponds to a second-dimensional encoded value, the plurality of grids includes a first grid and a second grid adjacent to the first grid, the first pattern in the first grid is not adjacent to the first pattern in the second grid, the second pattern in the first grid is not adjacent to the second pattern in the second grid;
• and
• the image is processed by the processor for scanning the plurality of grids;
• wherein, in a first-dimensional direction, the processor outputs a first coordinate according to at least two first patterns corresponding to at least two grids consecutively arranged in the plurality of grids;
• and in a second-dimensional direction, the processor outputs a second coordinate according to at least two second patterns corresponding to at least two grids consecutively arranged in the plurality of grids.