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Cordless telephone capable of programming an ID code into both a base and cordless remote unit via the cordless remote unit

  • US 5,068,889 A
  • Filed: 12/12/1989
  • Issued: 11/26/1991
  • Est. Priority Date: 12/12/1988
  • Status: Expired due to Term
First Claim
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1. A cordless telephone for transmitting and receiving telephone calls including a base unit and a remote unit capable of communicating with each other through radio transmission, where both the base unit and the remote unit include a programmable ID code which is transmitted when the remote unit desires radio transmission of an outgoing telephone call via the base unit or the base unit desires radio transmission of an incoming telephone call to the remote unit whereupon communication of incoming and outgoing telephone calls through radio transmission, between both units, is established only when the ID code of a remote unit is identical to the ID code of the base unit, the remote unit further including,storage means for storing said programmable ID code, andinput means, operatively connected to said storage means and including a programming key, numerical keys and an ID key, for inputting said ID code into said storage means upon activating said programming key and said ID key and numerical keys corresponding to the ID code, and for subsequently outputting a radio transmission to the base unit, including the ID code;

  • the base unit including,detecting means for receiving said output radio transmission, including said ID code, and for detecting activation of said programming key and ID key,control means, operatively connected to said detecting means, for outputting a first write signal, followed by said ID code, in response to said detecting means detecting activation of said programming key and said ID key, andnon-volatile memory means, operatively connected to said control means and capable of accessing and storing data, for, upon receiving said output first write signal, storing said ID code in a first memory area.

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