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High resolution timing recording system

  • US 4,142,680 A
  • Filed: 03/21/1977
  • Issued: 03/06/1979
  • Est. Priority Date: 03/21/1977
  • Status: Expired due to Term
First Claim
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1. A system for indicating a lapsed time from a start point for each of a plurality of entities to reach a succession of stations along a path of movement of all of said entities comprising:

  • radio frequency transmitting means carried by each of said entities, each said means emanating a radio frequency signal discrete for each entity;

    radio frequency receiving means located at each of said stations and each adapted to receive an interval of signals from said transmitting means when the transmitting means carried by said entity is within a reception area of each said station;

    a plurality of detector means connected to said receiving means, each said detector means being adapted to discriminate and detect signals of a selected one of said discrete radio frequency signals;

    activating means associated with each of said detector means constructed and arranged to generate an output signal when an interval of signals from the corresponding discrete radio frequency signal is received thereby;

    tagging means for generating a binary tag word identifying the output signal corresponding to each said entity connected to each said activating means;

    a timing counter connected to each of said detector means;

    clock means operable to operate said timing counter;

    start means connecting said clock means to said timing counter to start said timing counter;

    a timing counter latch means for said timing counter operable by said output signal to cause said timing counter latch means to store a binary count representative of said lapsed time upon being actively energized thereby;

    random access memory means coupled to said tagging means and said timing counter latch to sequentially store each said count and each said tag and;

    control means responsive to said output signal for effecting transfer of each said tag and each said count to said random access memory and for causing storage thereof in said random access memory as a multi-bit data word whereby at least each said multi-bit data word will indicate lapsed time from said start for each said entity upon an interval of signals of the discrete radio frequency signal being received at each of the succession of predetermined stations.

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