METHOD AND APPARATUS FOR IMPLEMENTING OCCLUSION GLYPH CODE TILING

PROBLEM TO BE SOLVED: To facilitate robust decoding of machine readable codes such as glyphs if an area on a board is occluded. SOLUTION: Embedded data codes include periodic tiles with occlusions. In one embodiment, each tile includes a glyph which encodes a first encoded system. The occlusions, for example, include information such as glyphs, graphics, or texts for encoding a second encoded system. The occlusions can be generated periodically within each tile. To capture images of the portion of the board including the tiles, a reader is used. Thereafter, a processor analyzes the images, thereby determining a tile code pattern, and decoding the tile codes.