Display method and apparatus for arranging order of listing points of interest for navigation system
US6839628B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 13, 2003 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Jun 13, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/3679
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A display method and apparatus for navigation system enables a user easily see a list of points of interest (POIs) along a route to a destination. The POI names are arranged in the order that the user sees the POIs along the route. The method first determines a route to the destination, and specifies a search area by selecting a distance range on the route from a user position and by defining a radius of a region circle. The method further creates a plurality of region circles consecutively on the route, retrieves points of interest (POIs) within the search area, calculates a modified distance of each POI based on distances from two reference points to the POI and distances from the user position to the two reference points, and lists the POIs in the order of modified distance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.