Navigation apparatus for vehicle
US4827420A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 11, 1987 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | Jun 11, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A navigation apparatus for a vehicle comprising means for previously introducing and storing the coordinate data and place names of a plurality of spots and means for computing the present location of the vehicle, so that the position and place name of a spot close to the present location of the vehicle are displayed, and the present location of the vehicle may be set by introducing the place name when the vehicle is positioned at any one of the close spots, and a spot, such as a garage, where the vehicle usually parks for along time is pre-registered, so that, when the vehicle is positioned at the registered spot, a switch is operated, and, when the vehicle stops at the spot for a predetermined duration or more or over a duration including a predetermined interval, the locational data of the registered spot is taken as the present location of the vehicle, thereby correcting accumulated errors at the present location of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.