Patent · US Active

System for determining a height coordinate

US9835462B2 · kind B2 · utility

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22Claims
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Key dates

Filing dateApr 27, 2012
Grant dateDec 5, 2017
Priority date
Expiry dateDec 21, 2034

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG06T17/20
  • WIPO fieldComputer technology
  • WIPO sectorElectrical engineering

Abstract

A navigation system has a database which stores index data for, respectively, a tile of a tiling. The index data includes, for each one of plural cells of a grid which is superimposed on the tile, respectively an identifier for each triangular face of a triangulated irregular network which at least partially overlaps with the respective cell. The plural cells of the grid are defined so as to cover the respective tile. A processing device of the navigation system is configured to use the index data to determine a triangular face on which a map feature having given lateral coordinates is located, in order to determine a height coordinate of the map feature.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.