| 摘要 |
PROBLEM TO BE SOLVED: To provide an "in-vehicle device" for displaying as many areas as possible of a navigation image showing a current position or the like on a map displayed by a portable device with satisfactory visibility.SOLUTION: An image portion excluding a part of an upper part of a navigation screen image (a) acquired from a smart phone 2 is extracted as a display object image (b), and the extracted display object image (b) is reduced such that scale reduction in a longitudinal direction is decreased according as it goes upward, and an overall aspect rate is converted so as to be coincident with the aspect rate of a display device 102 of an in-vehicle device 1 (d). Then, the converted image (d) is enlarged/reduced by similarity conversion, and a display navigation image the size of which is the same as that of the screen of the display device 102 is generated, and displayed at the display device 102. |
