×

Device and method for preventing wiretapping on power line

  • US 8,223,008 B2
  • Filed: 04/14/2008
  • Issued: 07/17/2012
  • Est. Priority Date: 09/05/2007
  • Status: Active Grant
First Claim
Patent Images

1. A device for preventing wiretapping, comprising:

  • a signal detector for receiving signals from a power line and filtering the received signals in at least one frequency band, wherein the at least one frequency band is set by a user'"'"'s input;

    a controller for receiving the filtered signal from the signal detector and determining whether a wiretapping signal exists; and

    a noise signal output unit for transmitting a noise signal to the power line according to whether or not the wiretapping signal exists.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×