Patent ID: 8386173

Claim:
A method of adjusting a level of map detail for content displayed on a personal navigation device, the method comprising: displaying a map of a current location of the personal navigation device on a display of the personal navigation device; calculating a current speed of the personal navigation device; adjusting a level of map detail according to the current speed of the personal navigation device to create an updated map, wherein adjusting the level of map detail comprises: comparing the current speed of the personal navigation device to one or more threshold levels; selecting the level of map detail according to the comparison result, wherein the level of map detail is shown in a full three-dimensional view when the current speed of the personal navigation device is less than a first threshold value, and the level of map detail is shown in a two-dimensional view when the current speed of the personal navigation device is greater than a second threshold value and less than a third threshold value; and creating the updated map according to the selected level of map detail; and displaying the updated map on the display of the personal navigation device.