Land vehicle navigation apparatus with guidance display image limiter for recognizability enhancement
US6076041A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1997 |
| Grant date | Jun 13, 2000 |
| Priority date | — |
| Expiry date | Aug 29, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/0969
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Land vehicle navigation apparatus for searching for a route to a destination and for providing guidance improves readability of intersection diagrams to thereby enable a vehicle operator to more easily recognize the travel path at a guidance intersection. The apparatus includes a storage device for storage of data representative of intersection diagrams and other data for use in performing route guidance. A display control device controls display of an intersection diagram by identifying that information necessary for route guidance from among the stored data items and depicts only that information so identified, i.e. the truly necessary information items. A present position detector detects the present vehicle location and the display controller causes the intersection diagram to be displayed responsive to an intersection display instruction automatically issued when the detected present vehicle position approaches to within a predefined distance from the guidance intersection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.