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Verbal travel instruction systems and method

  • US 4,334,248 A
  • Filed: 02/19/1980
  • Issued: 06/08/1982
  • Est. Priority Date: 02/19/1980
  • Status: Expired due to Term
First Claim
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1. A system for recording and playing back a series of travel instruction messages on a magnetic tape in a tape-recording and play-back device for use in a vehicle having an odometer, each said instruction message comprising a tone signal code representing a distance to be travelled by the vehicle to reach a location, and a verbal direction message pertinent to the operation of the vehicle when it reaches said location, said system comprising a tape-recording and play-back device;

  • digital means associated with said tape-recording and play-back device for recording on said magnetic tape a series of said tone signal codes, each of which is to be played back in advance of a verbal direction message pertinent thereto to form a travel instruction message;

    means associated with said tape-recording and play-back device for recording on said magnetic tape a series of verbal direction messages, each of said direction messages to be recorded subsequent to a pertinent tone signal code;

    tone detecting and decoding means associated with said tape-recording and play-back device for detecting and decoding each of said tone signal codes to set a comparing means for a travel distance represented by said tone signal code;

    distance measuring means associated with the odometer of the vehicle and with said comparing means for registering in said comparing means the distance travelled by the vehicle;

    said comparing means causing activation of said play-back device when the distance travelled by the vehicle corresponds to the travel distance represented by the first tone signal code, whereby the first verbal direction message pertinent to said tone signal code is played back to guide the operator of the vehicle at the pertinent location, and a second tone signal code is played back to reset the comparing means for a second travel distance represented by said second tone signal code.

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