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Audio/visual display system for multiple maps

  • US 4,630,209 A
  • Filed: 06/14/1982
  • Issued: 12/16/1986
  • Est. Priority Date: 07/01/1981
  • Status: Expired due to Fees
First Claim
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1. A system for selectively producing visual and audio information relating to at least one geographical map, comprising:

  • a magnetic tape disposed in a standard cassette enclosure, said tape having serially stored thereon (a) digital signals representing images of plural distinct geographical maps, (b) digital signals representing an image of predetermined designations of each of said maps, and (c) analog signals representing sounds associated with said images, said analog signals being physically stored on said tape in proximity to the digital signals representing images associated therewith;

    means for automatically locating a first position on said tape at which said digital signals representing said image of said predetermined designations are stored, and for automatically locating a second position on said tape at which said digital signals representing the image of a selected geographical map are stored;

    means for reading said digital signals representing said image of said predetermined designations from said tape beginning at said first located position, and for reading said digital signals representing the image of said selected map and said analog signals representing sounds associated with the image of said selected map from said tape beginning at said second located position;

    means for visually displaying the image of said predetermined designations in response to said digital signals read by said reading means, and for visually displaying the image of said selected map in response to said digital signals read by said reading means;

    means for generating sounds in response to said analog signals read by said reading means; and

    control means for selecting one of said predetermined designations in response to the image of said predetermined designations produced by said display means, and for controlling said locating means to locate the position on said tape at which said digital signals representing the image of the geographical map designated by said selected designation are stored.

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