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Ring-tone muting device and processing method

  • US 5,604,797 A
  • Filed: 12/19/1995
  • Issued: 02/18/1997
  • Est. Priority Date: 12/19/1995
  • Status: Expired due to Fees
First Claim
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1. A ring-tone muting device for use with a telephone having a telephone ringer, comprisinga gate for selectively conducting a ring signal to the telephone ringer, wherein said gate has at least two states, said states including a conductive state and a non-conductive state;

  • sensing means for determining when an incoming ring signal arrives;

    at least one delay timing means, responsive to said sensing means, for beginning a delay sequence being a predetermined period of time after a ring signal is sensed, said delay timing means having at least one mode of operation;

    at least one window timing means, responsive to said delay timing means, for beginning a window sequence being a predetermined period of time after said delay sequence is completed;

    gate controlling means responsive to said window timing means such that said state of said gate is conductive; and

    ,means for connecting said gate in series between a telephone line and telephone;

    whereby a telephone ringer is disabled while the gate is in a non-conductive state and enabled while the gate is in a conductive state;

    whereby further, said non-conductive state is coincident with the activation of said delay sequence of said delay timing means; and

    , whereby further, said conductive state is controlled by the deactivation of said delay sequence and coincident with the activation of said window sequence of said window timing means.

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