| 摘要 |
<p>The method involves producing similarly structured tiles (1), and randomly arranging the tiles together, where surface of the card consists of tiles. The tiles are structured in such a manner that tiles are arranged without borders and without intersection. A frequency polygon is cut from the surface, which consists of tiles. Cards are stored in a memory of a navigation system based on their design. An independent claim is also included for a navigation system.</p> |
