On-vehicle navigation apparatus with automatic re-initialization function
US5365448A · kind A · utility
32Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1992 |
| Grant date | Nov 15, 1994 |
| Priority date | — |
| Expiry date | Mar 27, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/3605
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An on-vehicle navigation apparatus in which destination coordinate data stored in a memory is erased when the distance from the present location to a destination is equal to or smaller than a predetermined value at the time the engine of a vehicle is started. The destination coordinate data will not therefore be erased while the vehicle is actually running toward the destination. The arrangement prevents display of navigation information such as the direction and distance from being stopped before the vehicle arrives at the destination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.