Patent ID: 9153210
Filing Date: 2015-10-06
Classification: G01C,G06F,G06T,G08G,G09B,G09G

Abstract:
1. A map-displaying method performed by a wireless communications device, the method comprising: downloading a first set of individually downloadable map layers for one or more maplets that are downloaded from a map database storing map data as a grid of maplets, wherein a maplet includes a set of map layers each comprising a set of map data, and wherein the first set of map layers is a subset of available map layers for the one or more maplets; rendering the first set of map layers by assembling the map layers at the wireless communications device to display a map comprising an incompletely rendered portion; graphically overlaying a partially transparent graphical indication over the incompletely rendered portion of the map, wherein the partially transparent graphical indication enables underlying features and labels of the incompletely rendered portion to be viewed through the partially transparent graphical indication; downloading a second set of individually downloadable map layers for the incompletely rendered portion subsequent to downloading the first set of map layers, rendering the first set of map layers and graphically overlaying the partially transparent graphical indication; rendering the second set of map layers to, in combination with the rendered first set of map layers, reduce a size of the incompletely rendered portion, leaving a residual incompletely rendered portion of the map; and graphically removing some of the partially transparent graphical indication so that the partially transparent graphical indication covers the residual incompletely rendered portion of the map.