Patent ID: 7272489
Filing Date: 2007-09-18
Classification: G01C

Abstract:
1. A navigation method for displaying point of interest (POI) information for selecting a destination, comprising the following steps of: specifying a category of POI in a navigation system for displaying a list of specified POIs; collecting a predetermined number of populated cells from a cell matrix and producing an array of populated cells where a populated cell is a cell having at least one POI of specified category therein; conducting a first sorting operation for sorting the populated cells in the populated cell array by distance from a predetermined position irrespective of numbers of POIs in the populated cells; retrieving the specified POIs from a first distance level of sorted populated cells and conducting a second sorting operation for sorting the retrieved POIs by distance from the predetermined position; displaying and scrolling a list of specified POIs in the order of distance from the predetermined position; and repeating foregoing steps for a next distance level of populated cells when POIs to be displayed are insufficient for further scroll request.