×

Communication device intervention system and method

  • US 20090270083A1
  • Filed: 01/14/2008
  • Published: 10/29/2009
  • Est. Priority Date: 07/25/2000
  • Status: Abandoned Application
First Claim
Patent Images

1. A cell phone intervention device independent from a network of base stations which the cell phone communicates with, the device comprising:

  • an antenna;

    a receiver responsive to transmissions received by the antenna;

    a transmitter; and

    a control module responsive to the receiver and connected to the transmitter, the control module configured to;

    measure the absolute filed strength of all received transmissions detected by the receiver from surrounding base stations,set the transmission power level of the transmitter to have an absolute field strength greater than the highest, measured absolute field strength detected from a surrounding base station,detect a signal received from a cell phone in a predefined area proximate the receiver, andestablish a direct communication channel between the cell phone and the transmitter so the control module acts as a controlling base station for the cell phone so the control module and the cell phone can engage in a communication protocol, the transmitter transmitting to the cell phone a) a signal which instructs the cell phone to lower its transmission power so that transmissions from the cell phone do not reach any surrounding base stations, b) a signal which instructs the cell phone to transmit at a frequency not recognized by any surrounding base stations, and/or c) a signal which instructs the cell phone to remove itself from normal communication with the base stations, the control module controlling the cell phone to prevent use of the cell phone with the surrounding base stations.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×