Method to disable trunk lockout protection for smart entry

• US 8,620,490 B2
• Filed: 04/25/2011
• Issued: 12/31/2013
• Est. Priority Date: 04/25/2011
• Status: Active Grant

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Lickfelt, Brian K., Ueda, Shinichi, Yamane, Katsuyasu, Mori, Takashi, Sugita, Masashi
• Primary Examiner(s): NGUYEN, TAN QUANG
• Application Number:
  US13/093,319
• Publication Number:
  US 20120271487A1
• Time in Patent Office: 981 Days
• Field of Search: 701/2, 701/1, 701/36, 340/5, 340/72, 340/5.64, 340/438, 340/825, 340/426.28
• US Class Current: 701/2
• CPC Class Codes: B60R 25/00 Fittings or systems for preventing or indicating unauthorised use or theft of vehicles locks for vehicles E05B77/00-E05B85/00

Abstract

A smart entry system for a vehicle having a lockable trunk is provided. The smart entry system includes portable devices, an onboard transmitter for transmitting request signals to the portable devices, an onboard receiver for receiving identification signals from the portable devices, and a trunk lockout protection feature. The trunk lockout protection feature is configured to receive a command signal to either initiate a trunk lockout protection sequence to unlock the trunk in the event that one of the portable devices is locked in the trunk or to disable the trunk lockout protection sequence to permit the trunk to remain in a locked state in the event that one of the portable devices is locked in the trunk.

Claims

1. A smart entry system for a vehicle having a lockable trunk comprising:

a plurality of portable devices;

an onboard transmitter for transmitting request signals to the plurality of portable devices;

an onboard receiver for receiving identification signals from the plurality of portable devices and;

a trunk lockout protection feature configured to receive a command signal from the control unit to initiate a trunk lockout protection sequence to unlock the trunk in the event that one of the plurality of portable devices is locked in the trunk and another of the plurality of portable devices is not located outside of the vehicle and to disable the trunk lockout protection sequence to permit the trunk to remain in a locked state in the event that one of the plurality portable devices is locked in the trunk and another of the portable devices is located within an area surrounding the outside of the vehicle, the area comprised in the plurality of predetermined areas.

2. The smart entry system of claim 1 further comprising a control unit operatively connected to the onboard transmitter and the onboard receiver and to coordinate communication between the plurality of portable devices, the control unit being configured to send the command signal to the trunk lockout protection feature based on the identification signals received from the plurality of portable devices.

3. The smart entry system of claim 2, wherein the plurality of portable devices includes a first portable device and a second portable device, the first portable device being configured to transmit a first identification signal from the plurality of identification signals and the second portable device being configured to transmit a second identification signal from the plurality of identification signals.

4. The smart entry system of claim 3, wherein the onboard transmitter transmits a first request signal from the plurality of request signals to the first portable device to determine if the first portable device is located in the trunk, wherein the onboard transmitter transmits a second request signal from the plurality of request signals to locate the second portable device if it is determined that the first portable device is locked in the trunk, wherein the control unit sends the command signal to the trunk lockout protection feature to disable the trunk lockout protection sequence if it is determined that the second portable device is located within the plurality of predetermined areas, and wherein the control unit sends the command signal to the trunk lockout protection feature to initiate the trunk lockout protection sequence if it is determined that the second portable device is not located within the plurality of predetermined areas.

5. The smart entry system of claim 3, wherein the onboard transmitter transmits a first request signal from the plurality of request signals to the first portable device to confirm that the first portable device is located in the trunk, wherein the second portable device repeatedly transmits the second identification signal to the onboard receiver while a trunk lid is closing, and wherein the control unit disables the trunk lockout protection sequence once the control unit confirms that the second portable device is located within the plurality of predetermined areas.

6. The smart entry system of claim 2, wherein the plurality of portable devices includes a trunk lockout protection setting, the trunk lockout protection setting having an “

ON”

position and an “

OFF”

position, wherein the onboard transmitter transmits a request signal from the plurality of request signals to determine if at least one of the plurality of portable devices is locked in the trunk.

7. The smart entry system of claim 6, wherein the trunk lockout protection sequence is disabled if the control unit determines that the trunk lockout protection setting is in the “

OFF”

position, and wherein the trunk lockout protection sequence is initiated if the control unit determines if the trunk lockout protection setting is in the “

ON”

position.

8. The smart entry system of claim 2, wherein the control unit recognizes a total number of the plurality of portable devices registered to the vehicle, and wherein the control unit disables the trunk lockout protection sequence if the control unit determines if total number of the plurality of portable devices locked in the trunk is not the same as the total number of the plurality of portable devices registered to the vehicle.

9. A trunk lockout protection method for a smart entry system for a vehicle comprising:

transmitting a first request signal to locate a first portable device;

determining if the first portable device is located in the trunk;

transmitting a second request signal to locate a second portable device;

determining if the second portable device is located outside of the vehicle; and

disabling or initiating a trunk lockout protection sequence, wherein disabling or initiating the trunk lockout protection sequence includes sending a command signal from a control unit to a trunk lockout protection feature to disable the trunk lockout protection sequence to thereby keep the trunk in a locked state if the second portable device is located outside of the vehicle, and wherein disabling or initiating the trunk lockout protection sequence includes sending a command signal from a control unit to the trunk lockout protection feature to initiate the trunk lockout protection sequence to unlock the trunk if the location of the second portable device is not located outside of the vehicle.

10. The method of claim 9, wherein determining if the first portable device is located in the trunk includes transmitting a first identification signal containing a first identification code from the first portable device to the control unit and comparing the first identification code of the first portable device with stored identification codes in the control unit.

11. The method of claim 10, wherein determining if the second portable device is located within the plurality of predetermined areas includes transmitting a second identification signal containing a second identification code from the second portable device to the control unit and comparing the second identification code of the second portable device with the stored identification codes in the control unit.

12. A trunk lockout protection method for a smart entry system for a comprising:

transmitting a signal to locate a portable device;

determining if the portable device is locked in the trunk;

determining if a trunk lockout protection setting is activated; and

disabling or initiating a trunk lockout protection sequence based on the setting of the trunk lockout protection setting of the portable device.

13. The method of claim 12, wherein determining if the portable device is locked in the trunk includes transmitting an identification signal containing an identification code from the portable device to a control unit and comparing the identification code of the portable device with stored identification codes in the control unit.

14. The method of claim 13, wherein determining if a trunk lockout protection setting is activated includes determining if the trunk lockout protection setting is in an “

ON”

position.

15. The method of claim 14, wherein disabling a trunk lockout protection sequence includes transmitting a command signal from the control unit to a trunk lockout protection feature to disable the trunk lockout protection sequence to keep the trunk in a locked state if the trunk lockout protection setting is not activated, and wherein initiating a trunk lockout protection sequence includes sending a command signal from the control unit to the trunk lockout protection feature to initiate the trunk lockout protection sequence to unlock the trunk if the trunk lockout protection setting is activated.

16. A trunk lockout protection method for a smart entry system for a vehicle comprising:

confirming that a first portable device is located in the trunk;

repeatedly transmitting a signal from a second portable device to a control unit while closing the trunk;

confirming that the second portable device is located outside of the vehicle; and

disabling a trunk lockout protection sequence.

17. The method of claim 16, wherein confirming that the first portable device is located in the trunk includes transmitting a first request signal from an onboard transmitter to the first portable device and transmitting a first identification signal containing a first identification code from the first portable device to an onboard receiver and comparing the first identification code of the first portable device with stored identification codes in a control unit.

18. The method of claim 17, wherein repeatedly transmitting a signal from a second portable device to the control unit while closing the trunk includes repeatedly activating a vehicle function on the second portable device and repeatedly transmitting a second identification signal containing a second identification code from the second portable device to the onboard receiver.

19. The method of claim 18, wherein confirming that the second portable device is located within the plurality of predetermined areas includes comparing the received identification code contained in the second identification signal from the second portable device with identification codes stored in the control unit, and wherein disabling a trunk lockout protection sequence includes transmitting a command signal from the control unit to a trunk lockout protection feature to disable the trunk lockout protection sequence to keep the trunk in a locked state.