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Route guiding apparatus

  • US 3,925,641 A
  • Filed: 05/03/1974
  • Issued: 12/09/1975
  • Est. Priority Date: 05/08/1973
  • Status: Expired due to Term
First Claim
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1. A route guiding apparatus comprising:

  • means for generating pulses as a function of the rotation of the wheels of a vehicle such as an automobile, a motorcycle, a bicycle or the like, for each specified increment of distance covered by said vehicle;

    counting means coupled to said pulse generating means for counting the pulses from said pulse generating means so as to measure the distance covered by said vehicle;

    first indicating means coupled to said counting means for displaying a distance data item corresponding to the covered distance obtained by said counting means;

    input means for supplying a direction data item indicating '"'"''"'"''"'"''"'"'right turn,'"'"''"'"''"'"''"'"' '"'"''"'"''"'"''"'"'left turn'"'"''"'"''"'"''"'"' or '"'"''"'"''"'"''"'"'go-straight'"'"''"'"''"'"''"'"' guiding write-in means coupled to said input means for pairing said distance data and said direction data item into a route segment data item upon receipt of said direction data from said input means;

    memory means coupled to said write-in means for sequentially storing a plurality of route segment data items from said write-in means;

    instructing means for instructing read-out of the route segment data items from said memory means;

    read-out means responsive to instructions from said instructing means for reading out controllably and sequentially A plurality of route segment data items from said memory means, each route segment data item including a distance data item corresponding to the distance of a route segment to be covered by said vehicle and a direction data item corresponding to the direction of the next route segment to be covered;

    second indicating means coupled to said memory means for displaying the direction data item read out from said memory means; and

    third indicating means coupled to said memory means for displaying the remaining distance of a route segment and including means for reducing the number of pulses defining the distance data item read out by said read-out means as the vehicle advances along the route segment to generate signals corresponding to said remaining distance of a route segment.

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