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System for authenticating remotely generated optical control signals

  • US 20060143451A1
  • Filed: 12/23/2004
  • Published: 06/29/2006
  • Est. Priority Date: 12/23/2004
  • Status: Active Grant
First Claim
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1. An authentication system for authenticating remotely generated optical control signals, comprising:

  • a. a remote optical emitter for transmitting an optical control signal from a remote location;

    b. a remote authentication device collocated with the remote optical emitter for receiving an authentication challenge signal and for transmitting a compatible authentication response signal;

    c. an optical signal processor positioned at a first location for receiving the optical control signal from the remote optical emitter and for generating a control output signal in response to detection of a valid optical control signal; and

    d. a control authentication device coupled by a real time data communications link with the optical signal processor and with the remote optical emitter for receiving the control output signal from the optical signal processor, for transmitting the authentication challenge signal to the remote authentication device in response to receipt of the control output signal and for generating an authenticated control output signal in response to receipt of a valid authentication response signal from the remote authentication device.

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