Aisin Aw Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Nobuhide Kuroda

Hidenori Nagasaka

Mitsuhiro Nimura

Kunihiro Yamada

Hiroyoshi Masuda

Yuji Sato

Kazunori Watanabe

Xin Jin

Fuminari Ishihara

Shinji Kachi

Naoyuki Hiramoto

Jiro Uchida

There is provided a technique for arranging characters along a road to improve appearance and readability. A map display system includes a temporarily arranging part that obtains directions of a plurality of characters for when the plurality of characters are temporarily arranged along a road in a direction of the road, the direction of the road being a reference direction; and an arranging part that arranges, when a difference between directions of consecutive characters is greater than or equal to a threshold value, the consecutive characters so as to reduce the difference, the consecutive characters being two consecutive characters in the direction of the road, and arranges, when the difference is less than the threshold value, the consecutive characters in a temporary arrangement position.

Map display system and map display program

A road map display device including a road map information memory for memorizing road map data on a two-dimensional coordinate and a detection device for detecting a present position and a travel direction of an automotive vehicle, wherein the two-dimensional coordinate of the road map data is read out from the information memory in accordance with the present position and travel direction of the vehicle detected by the detection device and displayed in the form of a plane view on a screen of a display unit. In the road map display device, trapezoid conversion parameters are determined on a basis of a conversion formula for converting the two-dimensional coordinate of the road map to a trapezoid coordinate for display of a perspective view in such a manner that an upper side of a square two-dimensional coordinate is contracted relatively to a lower side of the two-dimensional coordinate, and the road map data included in a reverse trapezoid coordinate defined by a reverse conversion formula of the conversion formula are read out from the road map information memory and introduced into a trapezoid coordinate defined by the trapezoid conversion parameters such that the road map data are displayed in the form of a perspective view on the screen of the display unit.

Road map display device and redoce media for use in the same

A road map display device including a road map information memory for memorizing road map data on a two-dimensional coordinate and a detection device for detecting a present position and a travel direction of an automotive vehicle, wherein the two-dimensional coordinate of the road map data is read out from the information memory in accordance with the present position and travel direction of the vehicle detected by the detection device and displayed in the form of a plane view on a screen of a display unit. In the road map display device, trapezoid conversion parameters are determined on a basis of a conversion formula for converting the two-dimensional coordinate of the road map to a trapezoid, coordinate for display of a perspective view in such a manner that an upper side of a square two-dimensional coordinate is contracted relatively to a lower side of the two-dimensional coordinate, and the road map data included in a reverse trapezoid coordinate defined by a reverse conversion formula of the conversion formula are read out from the road map information memory and introduced into a trapezoid coordinate defined by the trapezoid conversion parameters such that the road map data are displayed in the form of a perspective view on the screen of the display unit.

Growing community of inventors

Okazaki, Japan

Nobuhide Kuroda