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AUTOMATIC BAGGAGE HANDLING SYSTEM

  • US 3,679,874 A
  • Filed: 07/06/1970
  • Issued: 07/25/1972
  • Est. Priority Date: 07/06/1970
  • Status: Expired due to Term
First Claim
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1. A master reader for reading and reprogramming a remote memory including a memory receiving means, said memory having the characteristic ability to store a message including at least a first unique word, a second unique word identifying said memory and a third word, sample and transmit said message and reprogram itself upon receipt of said first unique word at said memory receiving means with a subsequently received message, sAid memory containing before being reprogrammed a first message including at least said first and second words but not said third word, said master reader comprising:

  • master storage means for storing a second message including at least said first, second and third unique words;

    master receiving means for receiving messages transmitted by said memory and for generating a start signal upon receipt of said first unique word;

    comparator means for comparing a message applied thereto with said second message during a comparison period and for generating a reprogramming signal when said messages compare properly;

    first means responsive to said start signal for applying said received first message to said comparator means;

    second means responsive to said start signal for sampling said second message stored in said master storage means and applying said sampled second message to said comparator means;

    means responsive to said received first signal for disabling said comparator means during predetermined portions of said comparison period; and

    , transmitter means responsive to said reprogramming signal for transmitting said second message to said memory.

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