Smart entry system and warning method thereof

• US 20070120644A1
• Filed: 11/15/2006
• Published: 05/31/2007
• Est. Priority Date: 11/25/2005
• Status: Abandoned Application

• Current Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Original Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Inventors: Seike, Yasushi
• Application Number:
  US11/599,408
• Publication Number:
  US 20070120644A1
• Time in Patent Office: Days
• US Class Current: 340/5.610
• CPC Class Codes: B60R 25/2072 with means for preventing jamming or interference of a remote switch control signal
• CPC Class Codes: G07C 2009/00793 by Hertzian waves
• CPC Class Codes: G07C 2209/62 Comprising means for indicating the status of the lock
• CPC Class Codes: G07C 2209/63 Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle
• CPC Class Codes: G07C 9/00182 operated with unidirectional data transmission between data carrier and locks
• CPC Class Codes: G07C 9/00309 operated with bidirectional data transmission between data carrier and locks

Abstract

A smart entry system for vehicle includes a processing portion that performs a given procedure according to a positional relationship of multiple portable devices with respect to a vehicle, the multiple portable devices being respectively carried by users and being detectable at least whether the multiple portable devices are located inside or outside the vehicle.

Claims

1. A smart entry system for vehicle comprising a processing portion that performs a given procedure according to a positional relationship of multiple portable devices with respect to a vehicle, the multiple portable devices being respectively carried by users and being detectable at least whether the multiple portable devices are located inside or outside the vehicle.

2. The smart entry system as claimed in claim 1, wherein when the processing portion detects that at least any of the multiple portable devices comes close to or moving away from the vehicle, the processing portion performs a warning process to a user inside the vehicle.

3. The smart entry system as claimed in claim 1, wherein when the processing portion detects that any of the multiple portable devices has moved from inside to outside the vehicle in a state where a portable device carried by a system manager is located inside the vehicle, the processing portion performs a warning process to a user including at least the system manager.

4. The smart entry system as claimed in claim 1, wherein when a driving device is operated in a state where a portable device carried by a system manager has moved to outside the vehicle and another portable device is located inside the vehicle, the processing portion performs a warning process to a user including at least the system manager.

5. The smart entry system as claimed in claim 4, wherein when a vehicle engine is started in a state where the processing portion is performing the warning process, the processing portion stops the vehicle engine or stops moving the vehicle.

6. The smart entry system as claimed in claim 1, wherein when the processing portion detects another portable device in the outside of the vehicle in a state where the portable device carried by a system manager is located inside the vehicle, the processing portion performs a warning process to a user including at least the system manager.

7. The smart entry system as claimed in claim 2, wherein:

each of the multiple portable devices is equipped with a warning portion that gives a warning to the user including a system manager; and

the processing portion performs the warning process by activating the warning portion.

8. The smart entry system as claimed in claim 7, wherein a warning function of the warning portion is customizably formed.

9. The smart entry system as claimed in claim 7, wherein the warning portion can be activated by operating operation buttons equipped in the vehicle.

10. The smart entry system as claimed in claim 1, wherein a function of any of the multiple portable devices can be customized by operating at least a portable device to be carried by a system manager.

11. The smart entry system as claimed in claim 1, wherein the processing portion counts a time since any of the multiple portable devices has moved from inside to outside the vehicle, and performs a warning process when the time counted passes a preset time.

12. The smart entry system as claimed in claim 1, further comprising a position detecting portion,

wherein the processing portion determines whether there is another portable device near a vehicle door other than the portable device carried by a system manager, and performs a warning process to a user when there is the another portable device near the vehicle door.

13. A warning method in a smart entry system for vehicle comprising performing a given procedure according to a positional relationship of multiple portable devices with respect to a vehicle, the multiple portable devices being respectively carried by users and being detectable at least whether the multiple portable devices are located inside or outside the vehicle.