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Four monitor and checkpoint designating system

  • US 5,166,499 A
  • Filed: 09/27/1991
  • Issued: 11/24/1992
  • Est. Priority Date: 02/02/1989
  • Status: Expired due to Term
First Claim
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1. A portable tour monitor and checkpoint designating system comprising:

  • a modular, portable device adapted to be carried through a tour, said tour comprising a plurality of single visit checkpoints, each labeled with a respective checkpoint code and each included only once in the tour;

    sensor means, included in the portable device, for reading the checkpoint codes during the tour and for generating time stamped sensor signals in response thereto;

    memory means for storing the time stamped sensor signals;

    means for designating first ones of the single visit checkpoints as higher priority checkpoints and second ones of the single visit checkpoints as lower priority checkpoints;

    means, included in the portable device, for storing a tour defining record comprising a plurality of entries at least one of which corresponds to a respective one of said higher priority checkpoints;

    means for advancing through the tour defining record at least in part in response to said sensor means;

    means, included in the portable device, for comparing the sensor signals with the tour defining record and for selectively impeding advancement in the tour defining record when the sensor signals indicate that one of the higher priority checkpoints has been missed while allowing advancement in the tour defining record when one of the lower priority checkpoints has been missed.

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