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Portable radio terminal having a removable radio system unit

  • US 5,809,432 A
  • Filed: 12/27/1995
  • Issued: 09/15/1998
  • Est. Priority Date: 12/30/1994
  • Status: Expired due to Term
First Claim
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1. A portable radio apparatus comprising:

  • a radio system unit;

    an apparatus body; and

    connecting means for detachably connecting said radio system unit with said apparatus body,said radio system unit including;

    a radio transceiver for transmitting and receiving radio signals; and

    a first memory for storing protocol information corresponding to a single communication protocol selected from a plurality of communication protocols, andsaid apparatus body including;

    a second memory for storing a protocol data set for implementing said single communication protocol based on said protocol information received from the first memory through said connecting means;

    first processing means for implementing a baseband processing function based on said protocol data set stored in said second memory; and

    second processing means for controlling said radio transceiver such that said radio signals change frequency, transmission timing and reception timing based on said protocol data set.

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