Back to results
US 2009/0244100 A1Published application
Gradually changing perspective map
OwnerWilliam C. Schwegler, Richard F. Poppeninventors
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerWilliam C. Schwegler, Richard F. Poppeninventors
Estimating the term…
Display of digital maps with gradually changing perspective is provided. A perspective engine selects from among possible foreshortening ratios depending on the selected map scale. In one embodiment, the perspective engine uses a fixed perspective view corresponding to each of a fixed set of scales. In alternative embodiments, there is a continuum of scales, and parameters are specified as functions of the scale, rather than as fixed values. In general, at smaller scales—that is, more zoomed-out—the displayed perspective appears to be more flat, as though looking straight down at the map. At larger scales—more zoomed-in—the map is displayed with increasing perspective. In some embodiments, once a threshold scale is reached, continuing to zoom in does not additionally increase the perspective; similarly, once a threshold zoomed-out scale is reached, the map continues to be displayed in a two-dimensional flat appearance.
A method for displaying a digital map, the method comprising:
A system for displaying a digital map, comprising:
A computer program product for displaying a digital map, the computer program product stored on a computer-readable medium and including instructions to cause a computer to carry out the steps of:
Dependencies are inferred from the claim text.