초록

Overlays may be selectably displayed over the bit-mapped map image display, with corresponding features appropriately aligned. Such overlays may include approach overlays instrument flight rules route charts, and current weather information.

대표청구항 ▼

[ What is claimed is:] [20.]20. A navigation system comprising:a processor;computer-readable storage including bit-mapped map image data of at least one system of earth surface maps, three-dimensional map image data for generating three-dimensional map images, and overlay data, readable by the proce

[ What is claimed is:] [20.]20. A navigation system comprising:a processor;computer-readable storage including bit-mapped map image data of at least one system of earth surface maps, three-dimensional map image data for generating three-dimensional map images, and overlay data, readable by the processor;a user input device for providing user input to the processor;a display device connected to the processor for displaying images and information, the processor capable of producing, from the bit-mapped map image data, and displaying on the display device, in response to any longitude and latitude supplied to the processor, a bit-mapped map image essentially filling the display area of the display device and having no discontinuities except at any edges of the map system, and centered at the supplied longitude and latitude, the processor displaying in response to user inputs an overlay accurately overlaid on and scaled to the bit-mapped map image,wherein the bit-mapped map image data comprises map image data produced by the process of(i) electronically scanning a printed map to create a stored bit-mapped map image corresponding to the printed map;(ii) displaying the stored bit-mapped map image for editing;(iii) cropping with image editing software the displayed bit-mapped map image into smaller images that are then deleted, moved, sized, and merged back into the displayed image to remove an unwanted part of the image and to select the remainder as a map image corresponding to a desired geographic area, the map image having discrete boundaries defined by reference grid lines;(iv) moving the boundaries of the displayed map image with said image editing software to shape the geographic area into a predetermined rectangular shape;(v) sizing the displayed map image with said image editing software after the image has been shaped to contain a predetermined pixel area;(vi) permanently storing, in the computer-readable storage medium, the displayed map image as said bit-mapped map image of the printed map after the displayed image has been shaped and sized, the displayed map image being stored with an identifier of a reference point and size of the geographic area represented by the selected map image; and(vii) repeating (i)-(vi) to create a plurality of digital map images from the printed map, each image having a uniform format of the predetermined pixel area and an identifier of a reference point and size of a geographic area and a uniform shape that can be fitted adjacent to each other to form a seamless map comprised of a plurality of such images.