초록 ▼

A vehicle map display system includes a control unit to manually or automatically display a reduced or enlarged map, from a reduced or enlarged map data storage device in accordance with the separating distance between the present position of a vehicle and a destination, on the whole or part of a di

A vehicle map display system includes a control unit to manually or automatically display a reduced or enlarged map, from a reduced or enlarged map data storage device in accordance with the separating distance between the present position of a vehicle and a destination, on the whole or part of a display area of a display device which is provided with a sub-display area.

대표청구항 ▼

A map display system, comprising: display means for displaying maps; designation means for designating a scale of a single map to be displayed; memory means for storing a set of spot coordinates for every one of a plurality of spots to be used for constituting said single map and predetermined level

A map display system, comprising: display means for displaying maps; designation means for designating a scale of a single map to be displayed; memory means for storing a set of spot coordinates for every one of a plurality of spots to be used for constituting said single map and predetermined level information, for said spots, indicating a range of map scales which said spots are employed to generate said single map, each said set of spot coordinates indicating a point on a first coordinate system with respect to a predetermined coordinate reference point; means for defining a region on said first coordinate system; means for extracting from said memory means said sets of spot coordinates of said spots which have said level information indicating a range of scales encompassing said designated scale; means for converting each of said spot coordinates extracted by said extracting means into display coordinates with respect to a predetermined point of a second coordinate system of said display means so that said single map of said region defined by said defining means is displayed on said display means; and map display control means for displaying on said display means said single map of said region on the basis of said display coordinates converted by said coverting means; wherein each of said spots is assigned a separate said level information in the form of a spot level selected from a plurality of spot levels in accordance with the range of scales over which each of said spots is displayable, whereby said extracting means extracts said sets of spot coordinates for those spots having said spot level coorresponding to said designated scale in accordance with a predetermined relationship between scales and spot levels.