Remote start, passive anti theft security system

• US 6,781,507 B1
• Filed: 05/16/1997
• Issued: 08/24/2004
• Est. Priority Date: 05/16/1997
• Status: Expired due to Term

• Current Assignee: Directed, LLC (VOXX International Corporation)
• Original Assignee: DEI Holdings Incorporated
• Inventors: Manivone, Bounthavy K., Birchfield, Jerry W.
• Primary Examiner(s): Holloway, III, Edwin C.
• Application Number:
  US08/857,711
• Time in Patent Office: 2,657 Days
• Field of Search: 340/825.31, 340/825.54, 340/825.69, 340/825.72, 340/426, 340/572.1, 340/10.1, 340/5.31, 340/5.61, 340/5.72, 340/5.64, 307/10.5, 307/10.3, 341/176, 342/41, 342/44, 342/51, 123/179.2, 180/287
• US Class Current: 340/5.61
• CPC Class Codes: B60R 25/04 operating on the propulsion system, e.g. engine or drive motor
• CPC Class Codes: B60R 25/209 Remote starting of engine

Abstract

A remote starting system operable with a passive anti theft security system. The passive anti theft security system includes a first coil connected to a passive anti theft controller, which is used for transmitting a first signal to a first transponder. The first transponder has a third coil and a first code. The first transponder is responsive to the first signal and transmits the first code to the first coil. The remote starting system comprises a second transponder, which has a second code and a fourth coil. The fourth coil has two terminal ends wound about the second transponder. The system further comprises a relay that selectively shorts or opens the terminal ends of the fourth coil so as to selectively enable and disable the second transponder.

Claims

1. A vehicle starting system comprising a remote starting system that is co-operable with a passive anti theft security system, wherein the security system comprises a first coil connected to a passive anti theft security system controller for transmitting a first signal to a first transponder having a third coil and a first code therein, said first transponder being responsive to said first signal to transmit said first code to said first coil, and wherein the remote starting system comprises:

(a) a second selectively operable transponder having a second code and a fourth coil with two terminal ends, said fourth coil being wound about said second transponder; and

(b) a relay that shorts said terminal ends of said fourth coil to disable said second transponder and prevent transmission of said second code to said controller when said passive anti-theft security system is in operation, and that selectively opens said terminal ends of said fourth coil to enable said second transponder and allow transmission of said second code to said controller when said remote starting system is in operation.

2. The vehicle starting system of claim 1 further comprising a second coil, said second coil receiving said first or second code from said first or said second transponder.

3. The vehicle starting system of claim 1 wherein said second transponder is positioned about an ignition switch of a vehicle.

4. The vehicle starting system of claim 1 wherein said second transponder stores the energy transmitted from said first coil to said second transponder.

5. The vehicle starting system of claim 1 wherein said first and second codes are authorized codes recognizable by said passive anti theft security system controller.

6. The vehicle starting system of claim 1 further comprising a remote starting system controller that emits a control signal for opening and closing said relay to open and short said fourth coil.

7. The vehicle starting system of claim 1 wherein said relay is normally closed.

8. The vehicle starting system of claim 1 wherein said first code of said first transponder and said second code of said second transponder are identical.

9. The vehicle starting system of claim 1 wherein said first code of said first transponder and said second code of said second transponder are unique.

10. The vehicle starting system of claim 6 further comprising a wireless transmitter that sends a remote start command to the remote starting system controller, said remote start command causing said remote starting system controller to open normally closed contacts of said relay thereby enabling the operation of said second transponder.

22. The vehicle starting system of claim 1 wherein the passive anti theft security system controller receives the first code if the second transponder is disabled and receives the second code if the second transponder is enabled, and wherein the controller provides necessary signals to continue operation of the vehicle if the received code came from an authorized transponder and does not provide necessary signals to continue operation of the vehicle if the received code did not come from an authorized transponder.

11. A vehicle starting system comprising a remote starting system that is co-operable with a passive anti theft security system, wherein the vehicle starting system comprises:

(a) a first coil energized by a passive anti theft security system controller to emit a first signal;

(b) a first transponder having a first code and a third coil, said third coil receiving said first signal from said first coil and transmitting said first code to said passive anti theft security system controller via said first coil;

(c) a second transponder having a second code and a fourth coil having at least one loop with two terminal ends, said fourth coil being wound about said second transponder; and

(d) a relay that shorts said terminal ends of said fourth coil to disable said second transponder and prevent transmission of said second code to said controller when said passive anti-theft security system is in operation, and that selectively opens said terminal ends of said fourth coil to enable said second transponder and allow transmission of said second code to said controller when said remote starting system is in operation.

12. The vehicle starting system of claim 11 further comprising a second coil, said second coil receiving said first or second code from said first or said second transponder.

13. The vehicle starting system of claim 11 wherein said second transponder is positioned about an ignition switch of a vehicle.

14. The vehicle starting system of claim 11 wherein said second transponder stores the energy transmitted from said first coil to said second transponder.

15. The vehicle starting system of claim 11 wherein said first and second codes are authorized codes recognizable by said passive anti theft security system controller.

16. The vehicle starting system of claim 11 further comprising a remote starting system controller that emits a control signal for opening and closing said relay to open and short said fourth coil.

17. The vehicle starting system of claim 11 wherein said relay is normally closed.

18. The vehicle starting system of claim 11 wherein said first code of said first transponder and said second code of said second transponder are identical.

19. The vehicle starting system of claim 11 wherein said first code of said first transponder and said second code of said second transponder are unique.

20. The vehicle starting system of claim 16 further comprising a wireless transmitter that sends a remote start command to the remote starting system controller, said remote start command causing said remote starting system controller to open normally closed contacts of said relay thereby enabling the operation of said second transponder.

23. The vehicle starting system of claim 11 wherein the passive anti theft security system controller receives the first code if the second transponder is disabled and receives the second code if the second transponder is enabled, and wherein the controller provides necessary signals to continue operation of the vehicle if the received code came from an authorized transponder and does not provide necessary signals to continue operation of the vehicle if the received code did not come from an authorized transponder.

21. A method to employ a remote vehicle starting system that is co-operable with a passive anti theft security system, the security system comprising a first coil connected to a passive anti theft security system controller for transmitting a first signal to a first transponder having a third coil and a first code therein, said first transponder being responsive to said first signal to transmit said first code to said first coil, the method comprising:

(a) positioning a second transponder, having a second code and a fourth coil with two terminal ends wound about said second transponder, about the first coil of the passive anti theft security system; and

(b) selectively shorting or opening said terminal ends of said fourth coil to selectively enable and disable said second transponder via a relay having normally closed contacts, said relay shorting said fourth coil and disabling the operation of said second transponder and said relay opening said closed contacts and enabling the operation of said second transponder upon receipt of a remote start signal.