Abstract: 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.

Abstract: A semiconductor capacitor includes a semiconductor substrate having a first and second principal surfaces. A first set of one or more trenches is formed on the first principal surface and a second set of one or more trenches formed on the second principal surface. A first dielectric film is located on the first principal surface and least inner walls of the first set of one or more trenches. A second dielectric film is located on the second principal surface and least inner walls of the second set of one or more trenches. A first conductor film located on the first dielectric film. A second conductor film located on the second dielectric film. The semiconductor substrate is formed of Si, SiC, GaN, or the like. The dielectric film has a two-layer structure of SiO2 and Si3N4.

Abstract: An in-vehicle communication device includes a transmission controller configured to perform control so that a first signal is transmitted from outside and a predetermined second signal is transmitted from outside and inside, after the transmission of the first signal, and a determination unit configured to determine whether the terminal device is present outside or inside based on a first response signal that is transmitted from the terminal device after the transmission of the second signal. When the determination unit is unable to determine whether the terminal device is present outside or inside, the transmission controller is configured to perform control so that a third signal is transmitted from inside, and the determination unit is configured to determine whether the terminal device is present outside or inside based on a second response signal that is transmitted from the terminal device after the transmission of the third signal.

Abstract: A vehicle control device is configured to be connected to an antenna and to a sensor by a common wire. The vehicle control device includes an electronic control unit configured to perform a determination process of determining a vehicle operation corresponding to a signal received from the sensor, determine whether the determination process is completed, and transmit a drive signal to the antenna after determining that the determination process is completed and upon the vehicle operation being determined, the drive signal being transmitted to the antenna such that the antenna transmits a radio signal.

Abstract: 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.

Abstract: A capacitor that includes a substrate; a capacitor formation region in which one or more trenches are formed; a dummy region located between the capacitor formation region and an end of the substrate; a first electrode formed inside the one or more trenches to cover the capacitor formation region, and a dielectric film; a second electrode that covers the capacitor formation region and has a different potential from the first electrode; and an extended portion that formed in the dummy region. Moreover, the extended portion forms a recess or a protrusion on the substrate in a path from the second electrode to the end portion of the substrate.

Abstract: A vehicle control device configured to perform transmission of a drive signal for driving an antenna and reception of a detection signal from a sensor detection unit configured to detect a user operation by common wire, and a controller configured to control the antenna driving unit to transmit the drive signal. The controller is configured to determine whether the determination process is being performed by the sensor detection signal determination unit each when the antenna driving unit transmits the drive signal. The controller is configured to cause the antenna driving unit to transmit the drive signal after the sensor detection signal determination unit finishes the determination process in a case where the controller determines that the determination process is being performed by the sensor detection signal determination unit.

Abstract: A capacitor circuit includes two ceramic capacitors that are connected in series. The two ceramic capacitors each have a ferroelectric layer interposed between conductive layers and have substantially identical direct-current bias characteristics such that an electrostatic capacitance during application of a voltage, which is half of a rated voltage, is larger than the electrostatic capacitance during application of the rated voltage higher than the voltage.

Abstract: A vehicle control device configured to perform transmission of a drive signal for driving an antenna and reception of a detection signal from a sensor detection unit configured to detect a user operation by common wire, and a controller configured to control the antenna driving unit to transmit the drive signal. The controller is configured to determine whether the determination process is being performed by the sensor detection signal determination unit each when the antenna driving unit transmits the drive signal. The controller is configured to cause the antenna driving unit to transmit the drive signal after the sensor detection signal determination unit finishes the determination process in a case where the controller determines that the determination process is being performed by the sensor detection signal determination unit.

Abstract: A semiconductor capacitor includes a semiconductor substrate having a first and second principal surfaces. A first set of one or more trenches is formed on the first principal surface and a second set of one or more trenches formed on the second principal surface. A first dielectric film is located on the first principal surface and least inner walls of the first set of one or more trenches. A second dielectric film is located on the second principal surface and least inner walls of the second set of one or more trenches. A first conductor film located on the first dielectric film. A second conductor film located on the second dielectric film. The semiconductor substrate is formed of Si, SiC, GaN, or the like. The dielectric film has a two-layer structure of SiO2 and Si3N4.

Abstract: A contact sensing device includes: a first electrode and a second electrode facing each other, a drive detection circuit of an electrostatic capacitance type, a first switching circuit that implements switching between connection and disconnection between the first electrode and ground, and a second switching circuit that implements switching between connection and disconnection between the first electrode and the second electrode. The drive detection circuit implements switching between a first state and a second state and detects an electrostatic capacitance change in the first state and an electrostatic capacitance change in the second state.

Abstract: Provided is a vehicle control system that performs detection and authentication of an electronic key being present in a detection range on a periphery of a vehicle, on the basis of polling performed by an on-vehicle apparatus. Any one of the on-vehicle apparatus and a first electronic key includes: a determination section configured to determine whether or not communication, between the on-vehicle apparatus and the first electronic key, in which the first electronic key returns a signal in response to a signal transmitted from the on-vehicle apparatus is continuously performed for not less than a predetermined time period; and a first processing section configured to restrict a response, by the first electronic key, to a first polling signal transmitted from the on-vehicle apparatus, when the determination section has determined that the communication is continuously performed for not less than the predetermined time period.

Abstract: A wireless communication system includes an in-vehicle device mounted on a vehicle; and a portable device that can be carried by a user. The in-vehicle device includes a first sending unit configured to intermittently and wirelessly send an identification code of the vehicle or the in-vehicle device; and a detection unit configured to detect a presence of the portable device by receiving a response signal wirelessly sent from the portable device. The portable device includes a receiving antenna configured to receive the identification code; a first verification unit configured to verify the identification code, received by the receiving antenna, with a code registered in the portable device; and a sending control unit configured to wirelessly send the response signal if the verification by the first verification unit is successful and not to send the response signal if the verification by the first verification unit is not successful.

Abstract: A wireless communication system includes an in-vehicle device mounted on a vehicle; and a portable device that can be carried by a user. The in-vehicle device includes a first sending unit configured to intermittently and wirelessly send an identification code of the vehicle or the in-vehicle device; and a detection unit configured to detect a presence of the portable device by receiving a response signal wirelessly sent from the portable device. The portable device includes a receiving antenna configured to receive the identification code; a first verification unit configured to verify the identification code, received by the receiving antenna, with a code registered in the portable device; and a sending control unit configured to wirelessly send the response signal if the verification by the first verification unit is successful and not to send the response signal if the verification by the first verification unit is not successful.

Abstract: An electronic control device includes one or more substrates, a casing, a plurality of circuit blocks, a common wire, a plurality of branch wires and two interrupt wires. The circuit blocks are disposed on the substrates and the substrates are disposed in the casing. The common wire is shared by the circuit blocks. The branch wires are respectively coupled between the circuit blocks and the common wire. The two interrupt wires are respectively coupled with two of the common wire and the branch wires for overcurrent protection of the circuit blocks.

Abstract: A smart key system includes a first transmitting unit, a first receiving unit, and a certification unit that are mounted on a vehicle, and a second receiving unit and a second transmitting unit that are mounted on a portable device. The certification unit performs certification processing of the portable device when the first receiving unit has received a reply signal. The first transmitting unit transmits the polling signal at a transmission timing that is later or earlier than a transmission timing based on the polling signal before the predetermined manipulation is performed, by a predetermined time shorter than a predetermined transmission cycle, when the predetermined manipulation has been performed in a situation where the certification unit does not certify the portable device.

Abstract: A vehicular control device includes: a transmitter section that transmits a request signal to an electronic key according to an input operation; a receiver section that receives a response signal from the electronic key; a verification section that performs verification of the electronic key on the basis of the response signal; a determination section that determines that an abnormal state occurs, when the receiver section cannot receive the response signal until a first time or when the receiver section receives the response signal until the first time and the verification section fails in verification based on the response signal, after the transmitter section has transmitted the request signal; and a control section that prohibits, when the determination section determines that an abnormal state occurs, a vehicle operation until a second time passes after the determination, and allows the vehicle operation after the second time has passed.

Abstract: A wireless communication system includes an in-vehicle device mounted on a vehicle; and a portable device that can be carried by a user. The in-vehicle device includes a first sending unit configured to intermittently and wirelessly send an identification code of the vehicle or the in-vehicle device; and a detection unit configured to detect a presence of the portable device by receiving a response signal wirelessly sent from the portable device. The portable device includes a receiving antenna configured to receive the identification code; a first verification unit configured to verify the identification code, received by the receiving antenna, with a code registered in the portable device; and a sending control unit configured to wirelessly send the response signal if the verification by the first verification unit is successful and not to send the response signal if the verification by the first verification unit is not successful.

Abstract: A smart key system includes a control unit mounted on a vehicle and configured to cause vehicle-mounted equipment to perform a predetermined operation when a first receiving unit has shifted from a state where a response signal is receivable to a state where the response signal is unreceivable in a case where a predetermined manipulation has been performed in the vehicle or a portable device; and a communicable distance extending unit configured such that at least one of a transmission intensity with which a first transmitting unit transmits a request signal and a reception sensitivity with which a second receiving unit receives the request signal is made higher than a predetermined normal value until a predetermined timing when the predetermined manipulation has been performed in the vehicle or the portable device.

Abstract: 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.