Method and apparatus for secure traffic light interruption

• US 20070001871A1
• Filed: 06/30/2005
• Published: 01/04/2007
• Est. Priority Date: 06/30/2005
• Status: Active Grant

• Current Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Wilkin, George, Pfleging, Gerald
• Granted Patent: US 7,248,183 B2
• Time in Patent Office: Days
• US Class Current: 340/907
• CPC Class Codes: G08G 1/0965 responding to signals from another vehicle, e.g. emergency vehicle

Abstract

This invention relates to a method and apparatus for secure traffic light interruption. A purpose of this invention is to allow for the use of a secure system to allow the interruption of the traffic light signals by emergency (and other authorized) vehicles. An objective of this invention is to allow for the use of a more secure system than the currently installed strobe only traffic light interruption (changing) systems. This invention integrates additional wireless technologies to assure that only authorized users trigger the traffic light changes that typically make it safer for emergency vehicles when they approach a traffic light.

Claims

1. A method for providing an interruption cycle for a traffic light system, the method comprising:

recognizing a first signal from a signaling unit of a vehicle;

locking onto the first signal;

transmitting a second signal to the signaling unit of the vehicle;

receiving a third signal in response to the second signal;

determining if the third signal includes information validating the signaling unit of the vehicle as being authorized; and

,

initiating the interruption cycle if the signaling unit is authorized.

2. The method as set forth in claim 1 wherein the first signal is a strobe pattern.

3. The method as set forth in claim 1 wherein the transmitting comprises transmitting at least one message requesting identification as the second signal.

4. The method as set forth in claim 1 wherein the transmitting comprises transmitting a wake up signal as the second signal.

5. The method as set forth in claim 1 wherein the third signal includes identification information.

6. The method as set forth in claim 1 wherein the determining comprises accessing a database.

7. The method as set forth in claim 1 further comprising waiting for a next detection if the signaling unit is not authorized.

8. The method as set forth in claim 1 further comprising activating a camera to record unauthorized use if the signaling unit is not authorized.

9. The method as set forth in claim 1 further comprising activating the camera to record traffic violations during the interruption cycle.

10. The method as set forth in claim 1 further comprising communicating with a central dispatch unit if the signaling unit is authorized.

11. A system for providing an interruption cycle for a traffic light system, the system comprising:

means for recognizing a first signal from a signaling unit of vehicle;

means for locking onto the first signal;

means for transmitting a second signal to the signaling unit of the vehicle;

means for receiving a third signal in response to the second signal;

means for determining if the third signal includes information validating the signaling unit of the vehicle as being authorized; and

,

means for initiating the interruption cycle if the signaling unit is authorized.

12. The system as set forth in claim 11 wherein the first signal is a strobe pattern.

13. The system as set forth in claim 11 wherein the second signal comprises at least one message requesting identification.

14. The system as set forth in claim 11 wherein the second signal comprises a wake up signal.

15. The system as set forth in claim 11 wherein the third signal includes identification information.

16. The system as set forth in claim 11 wherein the means for determining comprises means for accessing a database.

17. The system as set forth in claim 11 further comprising a means for waiting for a next strobe detection if the signaling unit is not authorized.

18. The system as set forth in claim 11 further comprising means for activating a camera to record unauthorized use if the signaling unit is not authorized.

19. The system as set forth in claim 11 further comprising means for activating the camera to record traffic violations during the interruption cycle.

20. A system for receiving signals from a signaling unit of a vehicle comprising:

a signal detector operative to detect first signals from the signaling unit; and

,

a processing module operative to receive the first signals, lock on to the first signals, transmit a second signal to the signaling unit of the vehicle, receive a third signal in response to the second signal, determine if the third signal includes information validating the signaling unit of the vehicle as being authorized, and initiate an interruption cycle if the signaling unit is authorized.

21. The system as set forth in claim 20 wherein the first signal is a strobe pattern.

22. The system as set forth in claim 20 wherein the second signal comprises at least one message requesting identification.

23. The system as set forth in claim 20 wherein the second signal comprises a wake up signal.

24. The system as set forth in claim 20 wherein the third signal includes identification information.

25. The system as set forth in claim 20 wherein the processing module is operative to determine based on accessing a database.

26. The system as set forth in claim 20 wherein the processing module is operative to wait for a next signal detection if the signaling unit is not authorized.

27. The system as set forth in claim 20 wherein the processing module is operative to activate a camera to record unauthorized use if the signaling unit is not authorized.

28. The system as set forth in claim 20 wherein the processing module is operative to activate the camera to record traffic violations during the interruption cycle.

29. The system as set forth in claim 20 wherein the processing module is operative to communicate with a central dispatch unit if the signaling unit is authorized.