Map information displaying apparatus, navigation apparatus and program storage device readable by the navigation apparatus
US5974876A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 10, 1997 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Sep 10, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/3673
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A navigation apparatus displays a map so as to support a travel of a movable body. A map information displaying apparatus in the navigation apparatus is provided with: a character data extracting device for extracting character data corresponding to characters from map data corresponding to the map; a map data converting device for converting the map data, which does not include the character data, to a bird's-eye view which is a one-point perspective projection view in which a topography corresponding to the map data is seen from one point in a sky, and outputting bird's-eye view map data indicating the bird's-eye view of the converted map data; a character data converting device for converting the extracted character data to the bird's-eye view, and outputting bird's-eye view character data indicating the bird's-eye view of the converted character data; a synthesizing device for synthesizing the outputted bird's-eye view character data and the outputted bird's-eye view map data corresponding to the bird's-eye view character data with each other, and generating the synthesized bird's-eye view character and map data; and a displaying device for displaying a synthesized bird's-eye v…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.