Toyota Jidosha Kabushiki Kaisha

Toru Yoshihara

Tomoyuki Funayama

Shigeki Nishiyama

Masashi Komeya

Hiroki Okada

Yuuto Kameyama

A terminal performs communication with an in-vehicle device to control a vehicle. The terminal includes a controller configured to switch and set a plurality of operation modes, and a vibration detection unit configured to detect vibration of the terminal. The operation modes include a first mode, a second mode different from the first mode, and a third mode where communication with the in-vehicle device is more restricted than in the first mode and the second mode. The controller is configured to, when the first mode is executed, in a case where vibration is not detected in the vibration detection unit for a predetermined time, switch the operation mode to the third mode, and when the second mode is executed, in a case where vibration is not detected in the vibration detection unit for a time longer than the predetermined time, switch the operation mode to the third mode.

Terminal, vehicle control system, and vehicle control method for switching an operation mode of the terminal based on detected vibration

A portable device communicates with a vehicle, and the portable device includes: a motion sensor; a control unit configured to determine whether or not abnormality has occurred in the motion sensor, based on an output from the motion sensor; and an output unit configured to perform an output representing abnormality in the motion sensor, when the control unit determines that abnormality has occurred in the motion sensor.

Portable device and vehicle

A terminal performs communication with an in-vehicle device to control a vehicle. The terminal includes a controller configured to switch and control an operation mode of the terminal to at least a predetermined first mode or a predetermined second mode, a reception unit configured to receive a first signal including a switching request of the operation mode from the in-vehicle device, a generation unit configured to update a predetermined value with the reception of the first signal and generate a second signal based on the updated predetermined value, and a transmission unit configured to transmit the second signal to the in-vehicle device. When a third signal including a command for instructing switching of the operation mode received by the reception unit is a response to the second signal, the controller switches the operation mode from the first to the second mode or from the second to the first mode.

Terminal, vehicle control system, and vehicle control method

An on-vehicle apparatus start verifying a first code of a portable apparatus returned from the portable apparatus in response to a first signal from the on-vehicle apparatus unless a battery of the portable apparatus is not exhausted upon detection of a user's operation to unlock/lock a door beside a vehicle; verifies a second code of the portable apparatus returned from the portable apparatus in response to power supply to the portable apparatus through electromagnetic induction caused by a second signal from the on-vehicle apparatus; determines whether the user's operation has been continuously detected if the first code is not returned; ends the verification of the first code if there is no state where the user's operation has been continuously detected; and ends the verification of the first code and starts the verification of the second code if the user's operation has been continuously detected.

On-vehicle apparatus, vehicle locking/unlocking system, and method of controlling on-vehicle apparatus

A smart key system to prevent theft of a vehicle by a relay attack while securing communication performance under a noisy environment, includes an in-vehicle device that measures noise in a radio wave band of a response signal to be wirelessly transmitted by a mobile device; sets a transmission strength of the response signal greater while the noise becomes greater, within a predetermined strength; wirelessly transmits a request signal including a command about the transmission strength into a predetermined area; receives the response signal; and authenticates the mobile device, by first information preregistered for the mobile device, and second information included in the response signal. The mobile device receives the request signal; sets the transmission strength of the response signal, based on the command in the request signal; and wirelessly transmits the response signal including the second information by the set transmission strength when receiving the request signal.

Smart key system

An on-vehicle electronic device creates a first signal and a second signal, and designates the number of times of transmitting the second signal. When noise is generated, the first signal includes information indicating a period of time to receive a signal by the portable device longer than that when noise is not generated. When noise is generated, the number of times of transmitting the second signal to a portable device by the on-vehicle electronic device to be designated is larger than that when noise is not generated. For the period of time to receive a signal indicated by the first signal, the portable device receives a signal.

Growing community of inventors

Miyoshi, Japan

Toru Yoshihara