Keyless entry system

• US 9,299,205 B2
• Filed: 04/10/2013
• Issued: 03/29/2016
• Est. Priority Date: 04/11/2012
• Status: Active Grant

• Current Assignee: DENSO Corporation, Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: DENSO Corporation, Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Funayama, Tomoyuki, Kameyama, Yuuto, Kakinuma, Shoji
• Primary Examiner(s): Cao, Allen T
• Application Number:
  US14/391,298
• Publication Number:
  US 20150070136A1
• Time in Patent Office: 1,084 Days
• Field of Search: 340 571- 574, 340/5.61, 340/5.64
• US Class Current: 1/1
• CPC Class Codes: B60R 25/20 Means to switch the anti-theft system on or off
• CPC Class Codes: G07C 2209/08 With time considerations, e.g. temporary activation, valid time window or time limitations
• 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 9/00 Individual registration on entry or exit
• CPC Class Codes: G07C 9/00309 operated with bidirectional data transmission between data carrier and locks

Abstract

A keyless entry system including multiple portable devices and an in-vehicle device controlling smart lock and smart unlock of a vehicle door is disclosed. The in-vehicle device includes an vehicle-cabin-inside portable determination section, which when locking the vehicle door by the auto-lock function, determines whether or not there is the portable device located inside the vehicle cabin, and a disabled state release section that releases the disabled states of all of the portable devices when the vehicle-cabin-inside portable determination section determines that there is no portable device located inside the vehicle cabin.

Claims

1. A keyless entry system comprising:

a plurality of portable devices; and

an in-vehicle device that controls smart lock and smart unlock of a vehicle door,

wherein;

the in-vehicle device has;

a function that,

when the smart unlock of the vehicle door is to be performed, performs a vehicle-cabin-outside collation, which is collation of a portable device located outside a vehicle cabin while excluding a portable device in a disabled state located inside the vehicle cabin, and

performs the smart unlock of the vehicle door in accordance with a result of the vehicle-cabin-outside collation; and

an auto-lock function that, after performing the smart unlock of the vehicle door,

keeps the vehicle door unlocked when an open state of the vehicle door is detected with a vehicle door open detection switch and

automatically locks the vehicle door upon elapse of a predetermined period when opening and closing of the vehicle door have not been detected during the predetermined period,

the keyless entry system further comprising;

an vehicle-cabin-inside portable determination section that, when locking the vehicle door by the auto-lock function, determines whether or not there is the portable device located inside the vehicle cabin; and

a disabled state release section that releases the disabled states of all of the portable devices when the vehicle-cabin-inside portable determination section determines that there is no portable device located inside the vehicle cabin.

2. The keyless entry system according to claim 1, further comprising:

an enabled state portable determination section that determines whether or not the portable device in an enabled state is present inside the vehicle cabin; and

a portable lock-out prevention section that, when the enabled state portable determination section that determines the portable device in the enabled state is present inside the vehicle cabin, unlocks the vehicle door to prevent lockout for the portable device.

3. The keyless entry system according to claim 2, wherein:

the portable lock-out prevention section performs the smart unlock of the vehicle door without changing the enabled state of the portable device inside the vehicle cabin into the disabled state.

4. The keyless entry system according to claim 2, wherein:

when the enabled state portable determination section determines that the portable device in the enabled state is not present inside the vehicle cabin and the in-cabin portable determination section determines that there is the portable device inside the vehicle cabin, the disabled state of the portable device inside the vehicle cabin is maintained.