Abstract: A management computer transmits to a vehicle a request of vehicle ID to identify the vehicle, when a tire ID of the vehicle is not registered in a registration portion. Upon receiving the request, a transmission pattern adjustment section of an ECU of tire pressure monitoring system of the vehicle controls a sensor unit of at least one tire to transmit electric waves in transmission pattern expressing the vehicle ID. The management computer permits the vehicle to use a facility when a vehicle ID specified from the received transmission pattern on electric waves is registered in a registration portion.

Abstract: An ECU is used to a tire pressure monitoring system of a vehicle. The ECU includes a contact storage portion and a post-replacement ID reporting section. The contact storage portion stores previously a contact of a management computer of a facility that the vehicle uses. The post-replacement ID reporting section transmits a post-replacement tire ID of a tire, which is substituted in the tire replacement, to the contact in the contact storage portion via a communication network when the tire replacement is detected by a tire replacement detection section. The management computer includes a registration change section that registers the post-replacement tire ID in a registration portion upon receiving the post-replacement tire ID.

Abstract: An emergency reporting system includes a seat belt detection unit, a speed change detection unit, an injury determination unit, and an emergency reporting unit. The seat belt detection unit detects a fastening state of seat belt when the vehicle stops moving assisted by collision prevention process that prevents vehicle collision in advance. The speed change detection unit detects a speed change during a time interval from when the collision prevention process is performed to when the vehicle is stopped. The injury determination unit determines the injury level of the vehicle occupant based on the detection results of the seat belt detection unit and the speed change detection unit. The emergency reporting unit emergently reports determined injury level of the vehicle occupant to a prescribed reporting destination. The emergency reporting system can properly determine the injury level of the vehicle occupant when vehicle collision is prevented in advance, and can emergently report the determined injury level.

Abstract: A power transmission control device provided in a power transmitting device of a non-contact power transmission system includes a power-transmitting-side control circuit that controls power transmission to a power receiving device, the power-transmitting-side control circuit causing the power transmitting device to perform intermittent temporary power transmission, detecting a response from the power receiving device that has received the power due to the temporary power transmission to automatically detect installation of a power-receiving-side instrument that includes the power receiving device in an area in which power transmitted via non-contact power transmission can be received, and causing the power transmitting device to perform continuous normal power transmission to the power receiving device when the installation of the power-receiving-side instrument has been detected. A foreign object detection process may also be performed in combination.

Abstract: An in-vehicle electronic device includes a power circuit, a control portion, an external input portion, and a control input portion. The power circuit supplies power when a signal transmitted to a control terminal is in a specified state in a state where an input terminal is coupled with a power source. The control portion operates by receiving the power supplied from the power circuit. The external input portion transmits an external signal from outside to the control terminal of the power circuit and the control portion. The external signal includes an activation signal and a power supply request signal. The control portion performs a temporary operation based on a power supply voltage applied in accordance with the activation signal and continuously transmits a control signal in a specified state based on the power supply request signal.

Abstract: A circuit apparatus includes an output circuit that outputs a signal to a host apparatus via a bus, and an output control circuit that controls the output circuit. The output circuit has a first conductive transistor provided between an output node and a first power source node, and a second conductive transistor provided between the output node and a second power source node. In a first output mode, the output control circuit controls one of the first conductive transistor and the second conductive transistor to go to off and controls the other transistor to go to on/off, whereas in a second output mode, the output control circuit controls the first conductive transistor to go to on and the second conductive transistor to go to off or vice versa.

Abstract: A power transmission control device provided in a power transmission device included in a contactless power transmission system in which power is transmitted from the power transmission device to a power receiving device by electromagnetically coupling a primary coil and a secondary coil and the power is supplied to a load of the power receiving device includes a controller controlling the power transmission control device. The controller includes a communication condition setting section setting, by exchanging information with the power receiving device, a communication condition that is at least one of a communication method between the power transmission device and the power receiving device and a communication parameter, and a communication processing section performing a communication processing between the power transmission device and the power receiving device by using the set communication condition.

Abstract: A power transmission control device controls a power transmission device in a contactless power transmission system that transmits power from the power transmission device to a power reception device through electromagnetically coupling a primary coil and a secondary coil. The power transmission control device includes a power transmission driver control section that controls drive timings of a plurality of switching elements of a power transmission driver that drives the primary coil, the power transmission driver control section variably controlling the power to be transmitted from the power transmission device to the power reception device.

Abstract: A coil unit includes a first coil having an outer diameter of D1, and at least one second coil having an outer diameter of D2 (D2<D1). The at least one second coil is arranged on a transmission surface side of the first coil. A part or whole of the at least one second coil overlaps the first coil, when viewed from the transmission surface side.

Abstract: A power transmission control device used for a non-contact power transmission system includes an operation mode switching terminal that receives an operation mode switch control signal that switches a mode between an automatic mode and a switch mode, a power transmitting device starting normal power transmission in the automatic mode after installation of a power-receiving-side instrument that includes a power receiving device in an area in which power transmitted via non-contact power transmission can be received has been automatically detected, the normal power transmission supplying power to a load of the power-receiving-side instrument, and the power transmitting device starting the normal power transmission in the switch mode after an operation trigger switch has been turned ON, an operation trigger terminal that receives an operation trigger signal that occurs due to an operation of the operation trigger switch, and a power-transmitting-side control circuit that controls power transmission to the power

Abstract: A contactless power transferring coil unit is provided. The contactless power transferring coil unit includes a flat coil, a magnetic film, and a leaking flux detecting coil. The flat coil is formed by winding a conductive wire into a spiral on a substantially flat plane. The magnetic film is disposed so as to cover one entire flat surface of the flat coil. The leaking flux detecting coil is disposed in a periphery outside an outer edge of the flat coil and the magnetic film and detects leaking magnetic flux from the flat coil.

Abstract: A power reception device utilizing non-contact power transmission causes a PMOS transistor as a switch circuit to be turned ON when a secondary battery is in a heavy-load state to form a path which bypasses a series regulator (LDO) as a power supply circuit, and supplies a charging current to the secondary battery through the bypass path. An offset may be provided between ON/OFF control threshold values of the PMOS transistor. The series regulator (LDO) may be entirely or partially set in a non-operating state when forming the bypass path.

Abstract: A power reception device transmits authentication information (e.g., start code, manufacturer ID, product ID, rated power information, and resonance characteristic information) to a power transmission device before starting normal power transmission by a non-contact power transmission system. The power transmission device performs instrument authentication based on the received authentication information, and regulates the maximum transmission power is regulated to conform to a power-reception-device side rated power. The power transmission device then performs normal power transmission.

Abstract: A noncontact charging device includes a mounting portion, a primary transmission coil, a temperature-detecting element, and a control unit. A device charged in a noncontact manner is mounted on the mounting portion. The primary transmission coil supplies power to a secondary transmission coil provided to the device by the use of electromagnetic induction. The temperature-detecting element detects a temperature of a material mounted on the mounting portion. The control unit is configured to supply power to the primary transmission coil and terminate the power supply to the primary transmission coil when a predetermined temperature is detected by the temperature-detecting element. The temperature-detecting element is located on a side of a contact surface between the mounting portion and the primary transmission coil, and the center of the temperature-detecting element is located within a range of the diameter of the primary transmission coil from the center position of the primary transmission coil.

Abstract: A circuit apparatus includes an output circuit that outputs a signal to a host apparatus via a bus, and an output control circuit that controls the output circuit. The output circuit has a first conductive transistor provided between an output node and a first power source node, and a second conductive transistor provided between the output node and a second power source node. In a first output mode, the output control circuit controls one of the first conductive transistor and the second conductive transistor to go to off and controls the other transistor to go to on/off, whereas in a second output mode, the output control circuit controls the first conductive transistor to go to on and the second conductive transistor to go to off or vice versa.

Abstract: A noncontact power-transmission coil is provided. The noncontact power-transmission coil includes a planar coil and a magnetic layer. The planar coil is formed by winding a linear conductor in a spiral shape substantially in a single plane. The magnetic layer is formed by applying a liquid-form magnetic solution in which magnetic particles are mixed with a binder solvent, so as to cover one planar portion of the planar coil and a side-face portion of the planar coil.

Abstract: A power-receiving-side control circuit of a power reception device performs intermittent load modulation by causing an NMOS transistor to be turned ON/OFF during normal power transmission. A power-transmission-side control circuit included in a power transmission control device of a power transmission device monitors, an intermittent change in the load of the power reception device during normal power transmission. The power-transmission-side control circuit determines that a foreign object has been inserted between a primary coil and a secondary coil and stops power transmission when an intermittent change in load cannot be detected. The amount of power supplied to the load may be compulsorily reduced when the load state of the load is heavy.

Abstract: A power transmission device performs power-saving power transmission that transmits a small amount of power as compared with normal power transmission when the power transmission device has detected that a battery of a load has been fully charged so that the operation of a charge control device (charge control IC) of the load is maintained, thereby enabling recharging due to a charge management function of the charge control device. Since the load state of a power reception device increases when recharging has started, the power transmission device detects an increase in the load state and changes power transmission from power-saving power transmission to normal power transmission. When the power reception device has been removed during power-saving power transmission, the power transmission device detects that the power reception device has been removed, and stops continuous power transmission so that unnecessary power consumption does not occur.

Abstract: A power-transmission-side control circuit causes a power transmission device to perform temporary power transmission when a switch provided in a power-transmission-side instrument has been turned ON, and performs ID authentication based on ID authentication information. The power-transmission-side control circuit detects the presence or absence of a foreign object during normal power transmission by monitoring a change in induced voltage in a primary coil, causes the power transmission device to stop temporary power transmission when the ID authentication information from the power reception device has not been received within a given period of time, causes the power transmission device to stop temporary power transmission when the ID authentication has failed, and causes the power transmission device to stop normal power transmission when removal, a metal foreign object, a takeover state, or a full-charge state has been detected after normal power transmission has started.

Abstract: A power transmission control device provided in a power transmitting device of a non-contact power transmission system includes a driver control circuit that controls a power transmitting driver that drives a primary coil, a load state detection circuit that detects a power-receiving-side load state, and a control circuit that controls the driver control circuit. The control circuit performs a foreign object detection process based on load state detection information from the load state detection circuit after receiving ID authentication information from a power receiving device, and starts normal power transmission to the power receiving device after performing the foreign object detection process.