System for authenticating remotely generated optical control signals
First Claim
1. A traffic authentication system that authenticates remotely generated optical control signals from a vehicle, the traffic authentication system comprising:
- a remote optical emitter coupled to a vehicle and configured to transmit an optical control signal from a remote location;
a remote authentication device collocated with the remote optical emitter, the remote authentication device configured to receive a radio frequency authentication challenge signal and transmit a compatible authentication response signal in response to the challenge signal;
an optical signal processor positioned at a traffic control location and configured to receive the optical control signal from the remote optical emitter and generate a control output signal in response to detection of a valid optical control signal; and
a control authentication device coupled by a data communications link to the optical signal processor, the control authentication device configured to receive the control output signal from the optical signal processor, transmit the radio frequency authentication challenge signal to the remote authentication device in response to receipt of the control output signal, and generate an authenticated control output signal in response to receipt of a valid authentication response signal from the remote authentication device.
1 Assignment
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Accused Products
Abstract
An authentication system authenticates remotely generated optical control signals. A remote optical emitter transmits an optical control signal from a remote location. A remote authentication device collocated with the remote optical emitter receives an authentication challenge signal and transmits a compatible authentication response signal. A control optical signal processor positioned at a first location receives the optical control signal from the remote optical emitter and generates a control output signal in response to detection of a valid optical control signal. An authentication device is coupled by a real time data communications link with the optical signal processor and with the remote optical emitter. The control authentication device receives the control output signal from the optical processor, transmits the authentication challenge signal to the remote authentication device in response to receipt of the control output signal and generates an authenticated control output signal in response to receipt of a valid authentication response signal from the remote authentication device.
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Citations
22 Claims
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1. A traffic authentication system that authenticates remotely generated optical control signals from a vehicle, the traffic authentication system comprising:
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a remote optical emitter coupled to a vehicle and configured to transmit an optical control signal from a remote location; a remote authentication device collocated with the remote optical emitter, the remote authentication device configured to receive a radio frequency authentication challenge signal and transmit a compatible authentication response signal in response to the challenge signal; an optical signal processor positioned at a traffic control location and configured to receive the optical control signal from the remote optical emitter and generate a control output signal in response to detection of a valid optical control signal; and a control authentication device coupled by a data communications link to the optical signal processor, the control authentication device configured to receive the control output signal from the optical signal processor, transmit the radio frequency authentication challenge signal to the remote authentication device in response to receipt of the control output signal, and generate an authenticated control output signal in response to receipt of a valid authentication response signal from the remote authentication device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of authenticating remotely generated optical control signals associated with traffic control, the method comprising:
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generating an optical control signal at a remote location using a remote optical emitter that is coupled to a vehicle; receiving the optical control signal at a traffic control location and generating a control output signal in response to detection of a valid optical control signal; transmitting a radio frequency authentication challenge signal to the remote location from the traffic control location in response to receipt of the control output signal; receiving, by an optical signal processor, the radio frequency authentication challenge signal at the remote location and transmitting a corresponding authentication response signal to the traffic control location; and receiving via a data communications link, the corresponding authentication response signal at the traffic control location, validating the authentication response signal, and generating an authenticated control output signal in response to detection of a valid authentication response signal. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification