Keyless remote door locking system

• US 6,937,138 B2
• Filed: 03/25/2002
• Issued: 08/30/2005
• Est. Priority Date: 03/25/2002
• Status: Expired due to Fees

• Current Assignee: Craig T. Underdahl
• Original Assignee: Craig T. Underdahl
• Inventors: Underdahl, Craig T.
• Primary Examiner(s): Horabik, Michael
• Assistant Examiner(s): Bangachon, William
• Application Number:
  US10/105,209
• Publication Number:
  US 20030179076A1
• Time in Patent Office: 1,254 Days
• Field of Search: 340/5.64, 340/5.5, 340/5.22, 340/5.28, 340/825.69, 340/5.3, 340/5.54, 340/5.72, 340/426.13, 340/426.28, 307/139, 307/147, 307/10.3, 307/10.6, 180/273, 180/279, 180/289, 702/57, 702/77
• US Class Current: 340/5.64
• CPC Class Codes: B60R 25/04 operating on the propulsion system, e.g. engine or drive motor
• CPC Class Codes: G07C 2009/00769 with data transmission performed by wireless means
• CPC Class Codes: G07C 2209/04 Access control involving a hierarchy in access rights
• CPC Class Codes: G07C 9/00182 operated with unidirectional data transmission between data carrier and locks

Abstract

An apparatus for controlling a door lock of a vehicle having an automatic door locking circuit includes a signal sensor and a removable control unit that is responsive to the signal sensor. The removable control unit generates a door lock state change signal when the signal sensor receives a signal having a first predetermined code value. A first controllable switch that is responsive to the removable control unit is removably couplable to the automatic door locking circuit. The first controllable switch is able to override the automatic door locking circuit so that when the door lock state change signal is asserted, the controllable switch applies power to the automatic door locking circuit, thereby causing a change of state of the door lock.

Claims

1. An apparatus for controlling a door lock of a vehicle having an automatic door locking circuit, comprising

a. a signal sensor;

b. a removable control unit, responsive to the signal sensor, that generates a door lock state change signal when the signal sensor receives a signal having a first predetermined code value; and

c. a first controllable switch, responsive to the removable control unit, that is removably couplable to the automatic door locking circuit so as to be able to override the automatic door locking circuit so that when the door lock state change signal is asserted, the controllable switch applies power to the automatic door locking circuit, thereby causing a change of state of the door lock.

2. The apparatus of claim 1, wherein the signal sensor comprises an infrared sensor.

3. The apparatus of claim 1, wherein the signal sensor comprises a bar code reader.

4. The apparatus of claim 1, wherein the signal sensor comprises a biometric sensor.

5. The apparatus of claim 4, wherein the biometric sensor comprises a finger print scanner.

6. The apparatus of claim 1, wherein the signal sensor comprises a radio-frequency sensor.

7. The apparatus of claim 1, wherein the vehicle has an ignition system, the apparatus further comprising a second controllable switch that is removably couplable to the ignition system and that is responsive to the removable control unit, the second controllable switch capable of disabling the ignition system when the removable control unit indicates that the door lock is in a locked state.

8. The apparatus of claim 1, wherein the removable control unit comprises:

a. a timer that is capable of incrementing a timer value at a regular interval when the timer is started;

b. a timer control circuit that starts the timer when the removable control unit causes the door lock to enter an unlocked state; and

c. a timed locking circuit that causes the door lock to enter a locked state when the timer value reaches a predetermined value.

9. The apparatus of claim 1, wherein the removable control unit comprises:

a. a first memory location that stores a supervisor code; and

b. a second memory location that stores the first predetermined code, wherein the removable control unit is programmed to allow the second memory to store a new code value when the supervisor code is entered into the removable control unit.

10. The apparatus of claim 9, wherein the removable control unit further comprises a data plug through which the supervisor code and the new code may be transmitted to the removable control unit.

11. The apparatus of claim 9, wherein the removable control unit further comprises a radio frequency receiver through which the supervisor code and the new code may be transmitted to the removable control unit.

12. The apparatus of claim 9, wherein the supervisor code and the new code are transmitted to the removable control unit through the signal sensor.

13. An apparatus for controlling a door lock of each of a plurality of vehicles, each vehicle having an automatic door locking circuit, the apparatus comprising:

a. a transmitter capable of transmitting a common predetermined code; and

b. a plurality of removable controllers, wherein each controller comprises;

i. a signal sensor;

ii. a removable control unit, responsive to the signal sensor, that generates a door lock state change signal when the signal sensor receives a signal having the common predetermined code value; and

iii. a first controllable switch, responsive to the removable control unit, that is removably couplable to the automatic door locking circuit so as to be able to override the automatic door locking circuit so that when the door lock state change signal is asserted, the controllable switch applies power to the automatic door locking circuit, thereby causing a change of state of the door lock.

14. The apparatus of claim 13, wherein the transmitter comprises an infrared code transmitter.

15. The apparatus of claim 13, wherein the transmitter comprises a radio frequency code transmitter.

16. The apparatus of claim 13, wherein the signal sensor comprises an infrared sensor.

17. The apparatus of claim 13, wherein the signal sensor comprises a radio frequency sensor.

18. The apparatus of claim 13, wherein each vehicle has an ignition system, the apparatus further comprising a second controllable switch that is removably couplable to the ignition system and that is responsive to the removable control unit, the second controllable switch capable of disabling the ignition system when the removable control unit indicates that the door lock is in a locked state.

19. The apparatus of claim 13, wherein the removable control unit comprises:

a. a timer that is capable of incrementing a timer value at a regular interval when the timer is started;

b. a timer control circuit that starts the timer when the removable control unit causes the door lock to enter an unlocked state; and

c. a timed locking circuit that causes the door lock to enter a locked state when the timer value reaches a predetermined value.

20. The apparatus of claim 13, wherein the removable control unit comprises:

a. a first memory location that stores a supervisor code; and

b. a second memory location that stores the common predetermined code, wherein the removable control unit is programmed to allow the second memory to store a new code value when the supervisor code is entered into the removable control unit.

21. The apparatus of claim 20, wherein the removable control unit further comprises a data plug through which the supervisor code and the new code may be transmitted to the removable control unit.

22. The apparatus of claim 20, wherein the removable control unit further comprises a radio frequency receiver through which the supervisor code and the new code may be transmitted to the removable control unit.

23. The apparatus of claim 20, wherein the supervisor code and the new code are transmitted to the removable control unit through the signal sensor.