Automotive navigation apparatus and recording medium storing program therefor

Claim 2

The automotive navigation apparatus according to claim 1, wherein said coordinate transforming means performs the three-dimensional coordinate transformation of the specific point on the map data acquired at said map acquiring means on the basis of the eye point coordinates and the focus point coordinates inputted at said eye point inputting means and the three-dimensional coordinate transformation of reference point coordinates of a prescribed mark included in said map data, and further corrects a shift between a map background and said reference point coordinates after the transformation; and said output means superposingly displays the prescribed mark subjected to coordinate correction on a map.

Claim 3

The automotive navigation apparatus according to claim 2, wherein said output means changes to output a size of the prescribed mark on the basis of a relative positional relation between a focus point position inputted at said eye point inputting means and the reference point coordinates of said prescribed mark.

Claim 4

The automotive navigation apparatus according to claim 2, wherein said output means changes to output a shape pattern of the prescribed mark on the basis of a relative positional relation between a focus point position inputted at said eye point inputting means and the reference point coordinates of said prescribed mark.

Claim 5

The automotive navigation apparatus according to claim 1, wherein said coordinate transforming means performs the three-dimensional coordinate transformation of the map data acquired by said map acquiring means on the basis of the eye point coordinates and the focus point coordinates inputted at said eye point inputting means and the three-dimensional coordinate transformation of a three-dimensional shape mark included in said map data.

Claim 6

The automotive navigation apparatus according to claim 1, further comprising route setting means obtaining a route between arbitrary positions.

Claim 7

The automotive navigation apparatus according to claim 1, further comprising traffic information displaying means receiving traffic information and three-dimensionally and superposingly displaying the traffic information.

Claim 8

The automotive navigation apparatus according to claim 1, further comprising position calculating means detecting a current position of a vehicle, wherein a position of the vehicle detected by said position calculating means is superposingly displayed on the map.

Claim 9

The automotive navigation apparatus according to claim 1, further comprising: altitude value storing means storing altitude value data; altitude value acquiring means acquiring the altitude value data corresponding to the map data acquired at said map acquiring means from said altitude value storing means; and map dividing means dividing the map data acquired at said map acquiring means into fine blocks; said coordinate transforming means performing the three-dimensional coordinate transformation using the altitude value data acquired at said altitude value acquiring means; and said mapping means deforming to map the fine blocks obtained by division at said map dividing means on the coordinates transformed at said coordinate transforming means; and further comprising face hiding processing means performing a face hiding processing on the fine blocks mapped by said mapping means.

Claim 10

The automotive navigation apparatus according to claim 9, further comprising position calculating means detecting a current position of a vehicle, wherein a position of the vehicle detected by said position calculating means is superposingly displayed on the map.

Claim 11

The automotive navigation apparatus according to claim 9, wherein said face hiding processing means writes over each of the fine blocks obtained by division at said map dividing means while scanning in a prescribed direction.

Claim 12

The automotive navigation apparatus according to claim 11, wherein said face hiding processing means scans to output said map data subjected to the coordinate transformation from a most distant point to a second most distant point with respect to an eye point inputted at said eye point inputting means among four vertexes of the map data acquired at said map acquiring means which are subjected to an eye point transformation at said coordinate transforming means.

Claim 13

The automotive navigation apparatus according to claim 9, further comprising: route setting means obtaining a route between arbitrary points; and cross-sectional view displaying means outputting altitude values on the route set at said route setting means as a cross-sectional view.

Claim 14

The automotive navigation apparatus according to claim 9, wherein said mapping means recognizes a tunnel section on the map data acquired at said map acquiring means, and further deletes the tunnel section for mapping.

Claim 15

The automotive navigation apparatus according to claim 10, wherein said position calculating means comprises a function of detecting the position of the vehicle by receiving radio waves from a GPS satellite, and said eye point inputting means obtains coordinates of the GPS satellite received by said position calculating means as an eye point position.

Claim 16

The automotive navigation apparatus according to claim 9, wherein said coordinate transforming means performs the coordinate transformation while changing a scale of the altitude values acquired at said altitude value acquiring means on the basis of a layer of the map data acquired by said map acquiring means or an eye point position inputted by said eye point inputting means.

Claim 17

An automotive navigation apparatus which is loaded in a vehicle, guides and instructs a route of the vehicle, comprising: map storing means storing map data; position calculating means calculating a current position of the vehicle; scroll instructing means instructing scroll of an output map; reference position deciding means deciding a reference position of the output map using the current position of the vehicle calculated by said position calculating means or a position specified by said scroll instructing means as a reference; output range specifying means specifying an output range of the map; mark generating means generating a current position mark and a current position indicating mark showing a positional relation of the current position mark with respect to the reference position on the basis of the current position of the vehicle calculated by said position calculating means and the reference position of the output map decided by said reference position deciding means; output screen generating means reading a corresponding range of the map data from said map storing means on the basis of the reference position of the output map decided by said reference position deciding means and the output range of the map specified by said output range specifying means, and generating an output screen together with the current position mark and the current position indicating mark generated by said mark generating means; and output means outputting the screen generated by said output screen generating means.

Claim 18

An automotive navigation apparatus which is loaded in a vehicle, guides and instructs a route of the vehicle, comprising: map storing means storing map data; position calculating means calculating a current position of the vehicle; scroll instructing means instructing scroll of an output map; reference position deciding means deciding a reference position of the output map using the current position of the vehicle calculated by said position calculating means as a reference; output range specifying means specifying an output range of the map; mark generating means generating a current position mark on the basis of the current position of the vehicle calculated by said position calculating means; route searching means reading necessary map data from said map storing means to calculate a route between two points; moving picture guide screen generating means generating a moving picture guide screen for a route guide on the basis of the route calculated by said route searching means; output screen generating means reading a corresponding range of the map data from said map storing means on the basis of the reference position of the output map decided by said reference position deciding means and the output range of the map specified by said output range specifying means, and generating an output screen together with the current position mark generated said mark generating means and the moving picture guide screen generated by said moving picture guide screen generating means; and output means outputting the screen generated by said output screen generating means.

Claim 19

A recording medium, wherein map data storing means previously stores map data, the recording medium storing a software program for executing a method comprising: a first step for acquiring the map data from said map data storing means; a second step for inputting eye point coordinates and focus point coordinates from which the map data is viewed acquired at said first step; a third step for performing a three-dimensional coordinate transformation of a specific point on the map data acquired at said first step on the basis of the eye point coordinates and the focus point coordinates inputted at said second step; a fourth step for deforming to map the map data acquired at said first step on the coordinates transformed at said third step; a fifth step for clipping the map data mapped at said four step; and a sixth step for outputting a map area clipped at said fifth step.

Claim 20

The recording medium according to claim 19, wherein altitude value storing means previously stores altitude value data, the recording medium storing the software program for executing the method further comprising: a seventh step for acquiring the altitude value data corresponding to the map data acquired at said first step from said altitude value storing means; and an eighth step for dividing the map data acquired by said map acquiring means into fine blocks; said third step performing the three-dimensional coordinate transformation using the altitude value data acquired at said seventh step; and said fourth step deforming to map the fine blocks obtained by division at said eighth step on coordinates transformed at said third step; and further comprising a ninth step for performing a face hiding processing on the fine blocks mapped at said fourth step.