초록 ▼

An electronic navigation device and method, for displaying a visual representation of navigational information in a selected perspective view, includes a processor, a display, a key pad input, a memory, and an antenna. Navigational information, such as way-points in an active route, hazards and land

An electronic navigation device and method, for displaying a visual representation of navigational information in a selected perspective view, includes a processor, a display, a key pad input, a memory, and an antenna. Navigational information, such as way-points in an active route, hazards and landmarks, and the position, direction, and speed of movement of the navigational device, are entered into the processor. The processor determines a trapezoidally-shaped visible region based upon user inputs, clips the navigational information to the visible region, and transforms the navigational information within the visible region to a selected perspective viewing plane. Polygons, representative of highway lanes, are displayed on the display, in the desired perspective view, for each route leg of a route within the visible region. Intersecting route legs, oriented at different angles relative to each other, have rounded ends so as to precisely overlap and illustrate a curve in the "highway lanes" at a turn event way-point. The device and method provide for an at least substantially true perspective view of navigational information, which is updated in real time.

대표청구항 ▼

[ What is claimed is:] [1.] An electrical navigational device, for processing and displaying navigational data, said device comprising:a processor;a display, connected to said processor, for displaying a visual representation of said navigational data in a perspective view;wherein said navigational

[ What is claimed is:] [1.] An electrical navigational device, for processing and displaying navigational data, said device comprising:a processor;a display, connected to said processor, for displaying a visual representation of said navigational data in a perspective view;wherein said navigational data is indicative of a top-down view of a map;wherein said processor transforms said navigational data to the said perspective view;wherein said navigational data indicative of said top-down view of a map is defined by a matrix of (x,z) coordinates;wherein said processor transforms each (x,z) coordinate to a corresponding perspective transformation coordinate (x.sub.p,y.sub.p), andwherein said processor transforms each said (x,z) coordinate to its associated perspective transformation coordinate (x.sub.p,y.sub.p) utilizing transformation equations: ]EQU4 ] where d is indicative of a selected periphery of said perspective view and h is indicative of an elevation of said perspective view.