Electronic map apparatus and electronic map display method
US7743337B1 · kind B1 · utility
38Cited by
12References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2000 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Apr 20, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B29/106
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an electronic map apparatus, an electronic map is displayed in accordance with map data read out from a DVD-ROM. Then, distance display circles which have a common center located at a point on the electronic map and each interconnect points on the electronic map at equal geographical distances from the point are drawn.As a result, it is possible to know an approximate geographical distance to a destination intuitively and easily in the electronic map apparatus which is typically used for car navigation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.