1. A display format for a dot pattern displayed on a display device, wherein the display format is for displaying, using the display device, the dot pattern where a plurality of dots are arranged with video and/or an image over a whole region or at least one predetermined region of at least a predetermined frame for displaying video and/or the image, and the plurality of dots comprise a plurality of information dots or the plurality of information dots and reference dots, each of the dots comprises a contrast control region which has a different pixel color and is distinguishable from each surrounding pixel region of the dots, and each of the dots comprises an anti-aliasing region where pixel colors gradually change from each surrounding pixel region of the dots to the contrast control region.