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Telecommunication apparatus having an ID rechecking function

  • US 5,109,537 A
  • Filed: 06/23/1989
  • Issued: 04/28/1992
  • Est. Priority Date: 06/24/1988
  • Status: Expired due to Term
First Claim
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1. A radio telecommunication apparatus comprising:

  • control means including internal memory means to which random access is gained;

    external memory means provided independently of said control means to store a first identification code which is initially set thereto; and

    radio receiving means for receiving a signal coming from a radio channel and for detecting a second identification code which is contained in the coming signal;

    wheresaid control means comprises means for reading the first identification code out of said external memory means prior to the reception of the coming signal and for transferring said first identification code to said internal memory means and holding said first identification code there, and means for reading said first identification code out of said internal memory means for each detection of the second identification code by said radio receiving means and comparing the second identification code detected by said radio receiving means with said first identification code read out from said internal memory means to confirm a coincide between said first and second identification codes, said control means further including means for reading at least one identification code out of said external memory means to compare said one identification code with said second identification code for rechecking, only upon the detection of a coincidence between the second identification code detected by said radio receiving means and said first identification code.

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