Method of displaying POI icons for navigation apparatus
US6405129B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 2000 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Jan 25, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/3682
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a navigation apparatus for displaying POI (Point of Interest) icons at places on a map where points of interest are located, a map image depicting section (1) generates a map image using a single unit of map information and writes the generated map image into a video RAM, (2) then generates POI icon images and overlays the generated POI icon images on the map image for each map segment in a preset order when a total number of POI icons included in the segment is smaller than a preset number, such segments being obtained by dividing the unit of map information into n segments (where n is an integer equal to or greater than 2), or generates POI icon images and overlays the generated POI icon images on the map image for the segment in order of icon type having a larger number of POI icons when the total number of POI icons included in the segment is larger than the preset number. A map reading control section extracts an image from the video RAM which is as large as a single screen and which corresponds to a vehicle position and displays the POI icons together with the map on a display screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.