CONTROL SYSTEM, IN-VEHICLE DEVICE AND ELECTRONIC KEY

• US 20180350176A1
• Filed: 05/29/2018
• Published: 12/06/2018
• Est. Priority Date: 06/05/2017
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: ENDO, Takeo
• Granted Patent: US 10,403,071 B2
• Time in Patent Office: Days
• CPC Class Codes: B60R 25/24 using electronic identifiers containing a code not memorised by the user
• CPC Class Codes: G07C 2009/00396 starting with prompting the keyless data carrier
• CPC Class Codes: G07C 2009/00769 with data transmission performed by wireless means
• CPC Class Codes: G07C 9/00309 operated with bidirectional data transmission between data carrier and locks
• CPC Class Codes: G07C 9/28 the pass enabling tracking or indicating presence

Abstract

A control system includes: an in-vehicle device; and electronic key, wherein the in-vehicle device includes a transmission device, a first operation detection device, and a first control device programmed to determine whether the electronic key is a control target electronic key, the electronic key used to perform a locking operation, and transmit a second signal from the transmission device toward the electronic key when it is determined that the electronic key used to perform the locking operation is the control target electronic key, and the electronic key includes a reception device, and a second control device programmed to set a first mode until the reception device receives the second signal, and set a second mode when the reception device receives the second signal.

Claims

1. A control system comprising:

an in-vehicle device mounted in a vehicle; and

at least one electronic key, wherein

the in-vehicle device includes

a transmission device configured to transmit a first signal and a second signal to the electronic key,

a first operation detection device configured to detect an operation of locking a door of the vehicle, and

a first control device programmed to

determine whether or not the electronic key is a control target electronic key determined in advance, the electronic key used to perform a locking operation detected by the first operation detection device, and

transmit the second signal from the transmission device toward the electronic key determined as the control target electronic key, when it is determined that the electronic key used to perform the locking operation is the control target electronic key, and

the electronic key includes

a reception device configured to receive the first signal and the second signal from the in-vehicle device, and

a second control device programmed to set a first mode until the reception device receives the second signal, and set a second mode when the reception device receives the second signal, the first mode being operating state for carrying out a process of receiving the first signal, the second mode being operating state for refraining from carrying out the process of receiving the first signal.

2. The control system according to claim 1, wherein

the electronic key is configured to shut off supply of electric power to a circuit that carries out a standby process for the first signal transmitted from the in-vehicle device, in the second mode.

3. The control system according to claim 1, wherein

the in-vehicle device further includes a storage device configured to register in advance the control target electronic key to which the in-vehicle device transmits the second signal.

4. The control system according to claim 1, wherein

the electronic key further includes a second operation detection device configured to detect a predetermined key operation performed on the electronic key, and

the second control device is programmed to set the operating state to the first mode when the second operation detection device detects the key operation.

5. The control system according to claim 1, wherein

each of the first signal and the second signal is transmitted through low-frequency communication.

6. An in-vehicle device mounted in a vehicle, comprising:

a transmission device configured to transmit a first signal and a second signal to an electronic key;

an operation detection device configured to detect an operation of locking a door of the vehicle;

a control device programmed to

determine whether or not the electronic key used to perform a locking operation detected by the operation detection device is a control target electronic key determined in advance; and

transmit the second signal from the transmission device toward the electronic key determined as the control target electronic key, when it is determined that the electronic key used to perform the locking operation is the control target electronic key.

7. An electronic key comprising:

a reception device configured to receive a first signal and a second signal from an in-vehicle device mounted in a vehicle; and

a control device programmed to set a first mode until the reception device receives the second signal, and set a second mode when the reception device receives the second signal, the first mode being operating state for carrying out a process of receiving the first signal transmitted from the in-vehicle device, the second mode being operating state for refraining from carrying out the process of receiving the first signal.