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Vehicle alarm system triggerable cell phone activation circuit

  • US 6,009,320 A
  • Filed: 08/07/1997
  • Issued: 12/28/1999
  • Est. Priority Date: 08/07/1997
  • Status: Expired due to Fees
First Claim
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1. A vehicle alarm system triggerable cell phone activation circuit comprising:

  • an activation cable electrically connectable to an alarm output of a vehicle alarm system;

    a pager mode integrated circuit having a pager mode enable input connectable to said activation cable, a dual tone telephone tone generator and sufficient programmable pager phone number memory to store a pager number;

    a cell phone mode integrated circuit having a cell phone mode enable input connectable to said activation cable, a digital to analog audio generating circuit, a dual tone telephone tone generator, a programmable phone number memory of sufficient size to store a contact phone number, and an audio message memory having an digitized audio message stored therein;

    a number entry keypad in user selectable connection with said programmable pager phone number memory and said programmable phone number memory;

    a selector switch wired in connection with said pager mode integrated circuit and said cell phone mode integrated circuit in a manner to allow a user to selectively enable operation of said pager mode integrated circuit and said cell phone mode integrated circuit;

    a cell phone power on control line output in connection with said activation cable; and

    a cell phone microphone circuit interface line that is connectable to said microphone circuit of a cell phone and that is in connection with said outputs of said pacer mode integrated circuit and said cell phone mode integrated circuit;

    said pager mode integrated circuit being responsive to an activation signal on said activation cable when said pager mode integrated circuit is selected by said selector switch in a manner to generate audio telephone dialing tones on said cell phone microphone circuit interface line that correspond to said stored pager number;

    said cell phone mode integrated circuit being responsive to an activation signal on said activation cable when said cell phone mode integrated circuit is selected by said selector switch in a manner to generate said audio telephone dialing tones on said cell phone microphone circuit interface line that correspond to said stored contact phone number and to then generate on said cell phone microphone circuit interface line analog audio signal that corresponds to said digitized digital audio message stored in said digital audio memory.

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