Apparatus and method of displaying navigation instructions

The application relates to an apparatus and method of displaying navigation instructions. The invention discloses a device for generating navigation instructions for display on a display device of a portable navigation device, comprising: means for accessing a repository storing digital map data pertaining to a navigable network along which the navigation device can travel, the digital map data including data pertaining to available lanes of the navigable network; means for generating, for display on the display device, a three-dimensional perspective view of a model representative of the map data as though from a camera positioned at an elevation and pitch angle behind a current position of the portable navigation device, that is updated to follow the device as it travels along a planned route. 本申请涉及显示导航指令的设备及方法。本发明揭示一种用于产生用于在便携式导航装置的显示装置上显示的导航指令的装置，其包括：构件，其用于存取存储关于所述导航装置可沿其行进的可导航网络的数字地图数据的存储库，所述数字地图数据包含关于所述可导航网络的可用车道的数据；构件，其用于产生用于在所述显示装置上显示的如同来自以某个高度和俯仰角定位在所述便携式导航装置的当前位置后方的摄像机的代表所述地图数据的模型的三维透视图，其经更新以在所述装置沿规