Patent ID: 8760473
Filing Date: 2014-06-24
Classification: G06T,G09B

Abstract:
1. A map display method allowing the display of a portion of a map to be enlarged, without hiding another portion of this map, comprising: displaying a first portion to be enlarged by applying respective enlargement ratios greater than 100%, with a 100% ratio corresponding to the initial display, to at least some elements of the first portion, displaying a first peripheral portion located on the periphery of the first portion to be enlarged, applying, at least to some elements of the first peripheral portion, respective enlargement ratios with values lower than 100% such that a combination of a display surface of the first peripheral portion and a display surface of the first portion to be enlarged occupies, in a new image of the map, a surface equal to a combination of the display surface of the first portion to be enlarged and the display surface of the first peripheral portion in an original image of the map; choosing a minimum value of the enlargement ratios to be applied to elements of at least one essential zone so as to leave essential details of the map visible; determining all of the values of the enlargement ratios to be applied respectively to the at least some elements of the first peripheral portion, in such a way that the applied values are at least equal to the minimum value; determining all of the values of the enlargement ratios, to be applied respectively to the at least some elements of the first portion to be enlarged, such that the combination of the display surface of the first peripheral portion and the display surface of the first portion to be enlarged occupies, in the new image a surface equal to a combination of the display surface of the first portion to be enlarged and the display surface of the first peripheral portion in the original image of the map; detecting an event which appears in said first peripheral portion; defining a second portion to be enlarged, the second portion being centered on a position of the detected event; defining a second peripheral zone associated with the second portion to be enlarged; displaying the second portion to be enlarged by applying respective enlargement ratios greater than 100% to at least some elements of the second portion, so as to make the event more legible; displaying the second peripheral portion by applying respective enlargement ratios lower than 100% to at least some elements of the second peripheral portion; determining the enlargement ratios to be applied respectively to the elements which make up the combination of the surfaces displaying the first peripheral portion and the second peripheral portion, through,