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Moving map display

  • US 4,825,381 A
  • Filed: 03/31/1987
  • Issued: 04/25/1989
  • Est. Priority Date: 03/31/1987
  • Status: Expired due to Fees
First Claim
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1. A moving map display comprising:

  • a. a CPU having a system bus connected thereto;

    b. a system memory connected with said system bus;

    c. an input device connected with said system bus for entering data to said system memory;

    d. mass storage means connected with said system bus for storing image data;

    e. a first image data processing channel in connection with said system bus for generating an image from said image data;

    f. a second image data processing channel in connection with said system bus for processing said image data;

    g. a plurality of display memory banks in connection with said first image data processing channel and said second image data processing channel, for storing image data;

    h. a display device connected with said plurality of display memory banks for receiving and displaying said images;

    i. the first image data processing channel having an image memory interconnected with said system bus, for storing data representing a moving geographic map and an image processor interconnected with said image memory for scanning and processing image data in said image memory; and

    j. said second image data processing channel having a geometry engine interconnected with said system bus for processing vector endpoints of images to be displayed in addition to the moving geographical map and a vector generator interconnecting with said geometry engine for generating intermediate points in vectors to be displayed;

    whereby a moving map display with a rapid data update capability is achieved by providing the processing of the moving geographic map through the first image data processing channel together with providing the generation of the images from the geometry engine and the vector generator, by the second image data processing channel.

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