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Switching control device for transmitting cellular phone calls to fixed-network telephone

  • US 20020086666A1
  • Filed: 01/04/2001
  • Published: 07/04/2002
  • Est. Priority Date: 01/04/2001
  • Status: Active Grant
First Claim
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1. A cellular phone/fixed network telephone switching control device for transmitting calls received by a cellular phone to a fixed-network telephone, comprising a cellular phone/fixed network telephone switching device in cooperation with an on/off device;

  • said cellular phone/fixed network telephone switching device further including a cellular phone mount and an acoustic frequency signal amplifying unit, a fixed network telephone signal transformation unit, a fixed network telephone/cellular phone switching unit, an incoming call detecting unit, a charger unit, a central control unit, an on state signal generating unit for said on/off device, an on state detecting unit of said on/off device and on state/off-hook state detecting unit and on/off state control unit;

    wherein;

    said cellular phone mount having a housing space for receiving a cellular phone is connected to said switching device;

    said acoustic frequency signal amplifying unit is used to properly amplify the output or input acoustic frequency signals of said cellular phone;

    said fixed network telephone signal transformation unit is used to convert input and output acoustic frequency signals of a cellular phone into acoustic frequency signals compatible with specifications of a fixed network telephone;

    said fixed network telephone/cellular phone switching unit is responsible for switching connection between a fixed network communication or cellular phone communication to a fixed-network telephone and is subject to the control of said incoming call detecting unit;

    said incoming call detecting unit is used to detect if an incoming call is received and intercommunication of a cellular phone is being carried out so as to control the operational connection position of said fixed network telephone/cellular phone switching unit;

    said charger unit is used to supply electrical power to a battery of the cellular phone;

    wherein the improvement is characterized by that;

    said central control unit is responsible for actuation of said on state signal generating unit for said on/off device, said on/off state control unit, a fixed network telephone signal transformation unit to operate according to detected results of said incoming call detecting unit and said on state and off-hook state;

    said on state signal generating unit for said on/off device produces an on state operation signal of said on/off device subject to the control of said central control unit;

    said on state signal generating unit for on/off device is controlled by said central control unit to output an on state actuation signal of said on/off device;

    said on state/ off-hook state detecting unit is responsible for detecting the on and off state of said on/off device and the off-hook state of a receiver of the fixed network telephone;

    said on/off state control unit receives control signals transmitted from said central control unit to control the switching selection of said fixed network telephone/cellular phone switching unit.

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