Display system in navigation apparatus
US5121326A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 6, 1991 |
| Grant date | Jun 9, 1992 |
| Priority date | — |
| Expiry date | Mar 6, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/3682
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A display system in a navigation apparatus according to the invention has course searching means (13) for searching out an optimum course based on position information, node data (21), intersection data (19) and road data (23), and scale ratio setting means (15), wherein the scale ratio of a displayed map is set in conformity with distance between a present position and a destination, and roads are selectively displayed on a display unit (31) in conformity with the scale ratio. Further, the invention has a data processing controller (46) for performing processing based on a departure intersection entered at an input unit (43), a display unit for displaying, based on the results of processing, an intersection diagram comprising the departure intersection, a peripheral road network and landmarks, and touch keys (35) such as a verification key for displaying direction of travel on the displayed intersection map, and a rotation instruction key for rotating and displaying the intersection diagram. In addition, the invention includes display means (48) for displaying an intersection diagram, in which direction of travel is pointed upward, and intersection landmark patterns, map data (53)…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.