Patent ID: 8730244

Claim:
A map display device, comprising: a character-data obtaining section that obtains a character string containing a plurality of pieces of regular-position character data in which a regular-position character having a rotation angle of 0° exists on a rectangular background area having four sides with which at least part of the regular-position character is in contact, a center point of the regular-position character and a center point of the background area matching each other; a character-data rotating section that forms rotated characters by rotating the regular-position characters in a predetermined direction by a predetermined angle with respect to a reference point that is the center point of the background area by using the regular-position character data obtained by the character-data obtaining section, to generate rotated character data in which the rotated characters exist on corresponding rectangular deformation background areas having four sides with which at least part of the rotated character is in contact; and a center-point matching processing section that horizontally and/or vertically enlarges the deformation background areas of the rotated character data generated by the character-data rotating section, to generate enlarged rotated character data in which center points of the enlarged deformation background areas and center points of the corresponding rotated characters match each other.