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Portable hybrid communication system and methods

  • US RE38,127 E1
  • Filed: 02/05/1992
  • Issued: 05/27/2003
  • Est. Priority Date: 01/19/1989
  • Status: Expired due to Term
First Claim
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1. A portable hybrid communications system comprising:

  • (a) entry means for entering a data signal;

    (b) public telephone network connection means for accessing a public telephone network in response to public telephone accessing control signals;

    (c) modem means for modulating and demodulating data signals;

    (d) cellular transceiving means for accessing a cellular network in response to cellular network accessing control signals;

    (e) analog switch means connected to the public telephone network connection means, to the cellular transceiving means, and to the modem means;

    (f) digital data connecting means for selectively creating a digital data transmission connection with the cellular transceiving means;

    (g) central processing means connected with said entry means, said public telephone network connection means, said modem means, said analog switch means, and said digital data connection means for generating public telephone accessing control signals and cellular network accessing control signals and for selectively operably connecting the modem means to either the public telephone network or the cellular network so that the central processing means may transmit or receive information over the public or cellular network.

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