Map display apparatus

A map display apparatus comprising:

• memory means for storing map data necessary for plotting a map of a predetermined region;
• character data selection means for selecting a character string having a predetermined attribute from character data read out from said memory means;
• perspective conversion means for perspective converting the character data selected by said character data selection means to produce perspective-converted character data;
• character data display means for displaying the perspective-converted character data produced by said perspective conversion means by a bird's-eye view display;
• and
• vector data display means for executing perspective conversion for vector data read out from said memory means and displaying it by a bird's-eye view display;
• wherein said character data selection means includes:
• character overlap judgement means for judging overlap between different character strings;
• and
• character string selection means for selecting a character string in the proximity of a visual point for those character strings which are judged as overlapping by said character overlap judgement means.

A map display apparatus comprising:

• memory means for storing map data necessary for plotting a map of a predetermined region;
• character data selection means for selecting a character string having a predetermined attribute from character data read out from said memory means;
• perspective conversion means for perspective converting the character data selected by said character data selection means to produce perspective-converted character data;
• character data display means for displaying the perspective-converted character data produced by said perspective conversion means by a bird's-eye view display;
• and
• vector data display means for executing perspective conversion for vector data read out from said memory means and displaying it by a bird's-eye view display;
• wherein said character data selection means includes:
• character overlap judgement means for judging overlap between different character strings;
• and
• font substitution means for a smaller font for those character strings which are judged as overlapping by said character overlap judgement means.

A map display apparatus comprising:

• memory means for storing map data necessary for plotting a map of a predetermined region;
• same character string selection means for selecting the same character strings from character data read out from said memory means;
• character data selection means for selecting a predetermined character string from the same character strings selected by said same character string selection means;
• perspective conversion means for perspective converting the character data selected by said character data selection means to produce perspective-converted character data;
• character data display means for displaying the perspective-converted character data produced by said perspective conversion means by a bird's-eye view display;
• and
• vector data display means for executing perspective conversion for vector data read out from said memory means and displaying it by a bird's-eye view display.

A map display apparatus comprising:

• memory means for storing map data necessary for plotting a map of a predetermined region;
• map display means for displaying a bird's-eye view map by using map data read out from said memory means;
• driving orbit memory means for storing a car's own driving orbit;
• and
• driving orbit display means for executing perspective conversion of a plurality of routes stored in said driving orbit memory means to produce perspective-converted routes and displaying said perspective-converted routes in such a manner that the gaps between orbit point strings become equidistant when said perspective-converted routes are displayed by a bird's-eye view display.

A map display apparatus comprising:

• memory means for storing map data necessary for plotting a map of a predetermined region;
• map data display means for executing perspective conversion of each apex when a pattern exists in the map data read out from said memory means, and displaying the map data by using a pattern used for a plan view map display;
• and
• character data display means for executing perspective conversion for the character data read out from said memory means and displaying it by a bird's-eye view display.

A map display apparatus comprising:

• memory means for storing map data necessary for plotting a map of a predetermined region;
• map display means for selectively displaying either a bird's-eye view map or a plan view map by using the map data read out from said memory means;
• mark selection means for selecting a respective mark to be displayed in superposition with the displayed bird's-eye view map and the displayed plan view map;
• and
• mark display means for displaying the selected mark in superposition with the displayed bird's-eye view map or the displayed plan view map.

A map display apparatus comprising:

• memory means for storing map data necessary for plotting a map of a predetermined region;
• map display means for displaying a bird's-eye view map and a plan view map by using the map data read out from said memory means;
• mark selection means for selecting a mark in accordance with the map to be displayed in superposition with the map to be displayed;
• and
• mark display means for displaying the mark selected by said mark selection means in superposition with the bird's-eye view map and the plan view map.

A map display apparatus comprising:

• a memory which stores map data necessary for plotting a map of a predetermined region;
• a character data selector which selects a character string having a predetermined attribute from character data read out from said memory;
• a perspective converter which perspective converts the character data selected by said character data selector to produce perspective-converted character data;
• a character data display which displays the perspective-converted character data produced by said perspective converter by a bird's-eye view display;
• and
• a vector data display which executes perspective conversion for vector data read out from said memory and displays it by a bird's-eye view display;
• wherein said character data selector includes:
• a character overlap judger which judges overlap between different character strings;
• and
• a character string selector which selects a character string having a predetermined attribute for those character strings which are judged as overlapping by said character overlap judger.

A map display apparatus comprising:

• a memory which stores map data necessary for plotting a map of a predetermined region;
• a character data selector which selects a character string having a predetermined attribute from character data read out from said memory;
• a perspective converter which perspective converts the character data selected by said character data selector to produce perspective-converted character data;
• a character data display which displays the perspective-converted character data produced by said perspective converter by a bird's-eye view display;
• and
• a vector data display which executes perspective conversion for vector data read out from said memory and displays it by a bird's-eye view display;
• wherein said character data selector includes:
• a character overlap judger which judges overlap between different character strings;
• and
• a character string selector which selects a character string in the proximity of a visual point for those character strings which are judged as overlapping by said character overlap judger.

A map display apparatus comprising:

• a memory which stores map data necessary for plotting a map of a predetermined region;
• a character data selector which selects a character string having a predetermined attribute from character data read out from said memory;
• a perspective converter which perspective converts the character data selected by said character data selector to produce perspective-converted character data;
• a character data display which displays the perspective-converted character data produced by said perspective converter by a bird's-eye view display;
• and
• a vector data display which executes perspective conversion for vector data read out from said memory and displays it by a bird's-eye view display;
• wherein said character data selector includes:
• a character overlap judger which judges overlap between different character strings;
• and
• a font substituter for a smaller font for those character strings which are judged as overlapping by said character overlap judger.

A map display apparatus comprising:

• a memory which stores map data necessary for plotting a map of a predetermined region;
• a same character string selector which selects the same character strings from character data read out from said memory;
• a character data selector which selects a predetermined character string from the same character strings selected by said same character string selector;
• a perspective converter which perspective converts the character data selected by said character data selector to produce perspective-converted character data;
• a character data display which displays the perspective-converted character data produced by said perspective converter by a bird's-eye view display;
• and
• a vector data display which executes perspective conversion for vector data read out from said memory and displays it by a bird's-eye view display.

A map display apparatus comprising:

• a memory which stores map data necessary for plotting a map of a predetermined region;
• a map display which displays a bird's-eye view map by using map data read out from said memory;
• a driving orbit memory which stores a car's own driving orbit;
• and
• a driving orbit display which executes perspective conversion of a plurality of routes stored in said driving orbit memory to produce perspective-converted routes and displays said perspective-converted routes in such a manner that the gaps between orbit point strings become equidistant when said perspective-converted routes are displayed by a bird's-eye view display.

A map display apparatus comprising:

• a memory which stores map data necessary for plotting a map of a predetermined region;
• a map data display which executes perspective conversion of each apex when a pattern exists in the map data read out from said memory, and displays the map data by using a pattern used for a plan view map display;
• and
• a character data display which executes perspective conversion for the character data read out from said memory and displays it by a bird's-eye view display.

A map display apparatus comprising:

• a memory which stores map data necessary for plotting a map of a predetermined region;
• a map display which selectively displays either a bird's-eye view map or a plan view map by using the map data read out from said memory;
• a mark selector which selects a respective mark to be displayed in superposition with the displayed bird's-eye view map and the displayed plan view map;
• and
• a mark display which displays the selected mark in superposition with the displayed bird's-eye view map or the displayed plan view map.

A map display apparatus comprising:

• a memory which stores map data necessary for plotting a map of a predetermined region;
• a map display which displays a bird's-eye view map and a plan view map by using the map data read out from said memory;
• a mark selector which selects a mark in accordance with the map to be displayed in superposition with the map to be displayed;
• and
• a mark display which displays the mark selected by said mark selector in superposition with the bird's-eye view map and the plan view map.