Abstract: An antenna device includes first and second coil antennas with winding axis directions that are not perpendicular to each other, and a feeder coil including a winding axis that extends perpendicular or substantially perpendicular to the winding axis of the first coil antenna. The feeder coil is located between the first coil antenna and the second coil antenna in a height direction (winding axis direction) thereof. A first coil aperture is closer to a coil aperture of the first coil antenna than a second coil aperture. The second coil aperture is closer to a coil aperture of the second coil antenna than the first coil aperture. The first and second coil antennas are connected to each other in a polarity such that magnetic fluxes thereof with respect to the winding axis direction of the first coil antenna are in phase with each other.

Abstract: An inductor module includes a laminate where multiple insulator layers are laminated, a main line conductor in the shape of a straight line formed on the laminate, a current detection conductor that is formed on the laminate and magnetically coupled with the main line conductor, and coil conductors that are formed on the laminate and constitute an inductor element. An absolute value of a coupling coefficient between the main line conductor and inductor element, and an absolute value of a coupling coefficient between the current detection conductor and the inductor element, are each smaller than an absolute value of a coupling coefficient between the main line conductor and the current detection conductor. Thus, an inductor module that detects current and is used as an inductor element, and an electric power transmission system including the inductor module, are provided.

Abstract: An antenna device includes a radiating element, a coupling circuit, and a non-radiating resonant circuit. The coupling circuit includes first and second coupling elements, the first coupling element being connected between a feeder circuit and the radiating element, the second coupling element being coupled to the first coupling element. An end of the second coupling element is grounded, and another end of the second coupling element is connected to the non-radiating resonant circuit. A frequency characteristic of a return loss of the radiating element when seen from the feeder circuit is adjusted by a resonant frequency characteristic of the non-radiating resonant circuit.

Abstract: A magnetic field coupling element includes conductor patterns stacked with insulating layers interposed therebetween, and interlayer connection conductors that inter-connect the conductor patterns at predetermined positions. The conductor patterns include first, second, third, and fourth conductor patterns, and the interlayer connection conductors include first and second interlayer connection conductors. The first conductor pattern, the second conductor pattern, and the first interlayer connection conductor define a first coil, and the third conductor pattern, the fourth conductor pattern, and the second interlayer connection conductor define a second coil. The first coil and the second coil are disposed in a region of less than about 1/3 of a stacking height of a multi-layer body including the insulating layers.

Abstract: The present invention has: a crank angle sensor 4 that outputs a crank angle signal in response to rotation of a crankshaft 2, the crank angle signal being preset to indicate reference positions; a cam sensor 5 that outputs cam signal pulses in response to rotation of an intake camshaft 3 for opening and closing an engine valve; an electric motor 6 that relatively rotates intake camshaft 3 with respect to crankshaft 2, so that electric motor 6 can change a rotational phase angle of intake camshaft 3 with respect to crankshaft 2; and an electronic control unit 7 that computes an actual rotational phase angle of intake camshaft 3 based on a first cam signal pulse detected after start of cranking and a first reference position of the crank signal detected thereafter, to calculate an absolute position of a variable valve timing mechanism 14.

Abstract: An antenna device includes a first coil antenna conductor including first and second ends, a second coil antenna conductor including third and fourth ends, and a switching circuit. The first coil antenna conductor is wound around an axis and the second coil antenna conductor is wound around an axis. The switching circuit switches a connection state of the first coil antenna conductor and the second coil antenna conductor between connection states including series connection and parallel connection.

Abstract: An electronic apparatus includes a spiral coil conductor shared by a first non-contact transfer system and a second non-contact transfer system. In the electronic apparatus, a coil antenna includes an inner coil and an outer coil connected in series with each other. The coil antenna includes opposite ends connected to a first system circuit. The inner coil includes opposite ends connected to the outer coil. The outer coil defines and functions as a booster coupled to the inner coil via an electromagnetic field.

Abstract: It is intended to, when abnormality in either one of two rotation detection sections with different detection frequencies occurs, quickly and highly accurately detect the abnormality to favorably deal with abnormality occurring during low engine rotation. It is determined that abnormality is present in the rotation phase detection section, when an absolute value of difference between an actual VTC angle detected by a rotation phase detection section and an integrated value of a VTC change angle detected by motor rotation sensor 201 with the higher detection frequency than the frequency of detection of the actual VTC angle by the rotation phase detection section is equal to or greater than a predetermined value.

Abstract: The present invention relates to an internal combustion engine including a VTC controller for controlling driving of a variable valve timing device and an engine control module (ECM) for calculating and transferring a valve timing control command. In the present invention, each of the VTC controller and the ECM detects whether an abnormality of a communication circuit used for transferring a control command is present or not. If the abnormality is detected, the VTC controller and the ECM set a target value for an abnormal state with the same characteristic, and perform a control operation based on the target value in the abnormal state. In this manner, a decrease in engine operability when an abnormality occurs in the communication circuit of a control command is suppressed.

Abstract: An antenna device includes first and second coil antennas with winding axis directions that are not perpendicular to each other, and a feeder coil including a winding axis that extends perpendicular or substantially perpendicular to the winding axis of the first coil antenna. The feeder coil is located between the first coil antenna and the second coil antenna in a height direction (winding axis direction) thereof. A first coil aperture is closer to a coil aperture of the first coil antenna than a second coil aperture. The second coil aperture is closer to a coil aperture of the second coil antenna than the first coil aperture. The first and second coil antennas are connected to each other in a polarity such that magnetic fluxes thereof with respect to the winding axis direction of the first coil antenna are in phase with each other.

Abstract: An antenna device includes first and second coil antennas with winding axis directions that are not perpendicular to each other, and a feeder coil including a winding axis that extends perpendicular or substantially perpendicular to the winding axis of the first coil antenna. The feeder coil is located between the first and second coil antennas in the winding axis direction thereof. A first coil aperture is closer to a coil aperture of the first coil antenna than a second coil aperture. The second coil aperture is closer to a coil aperture of the second coil antenna than the first coil aperture. The first and second coil antennas are connected to each other in a polarity such that magnetic fluxes thereof with respect to the winding axis direction of the first coil antenna are in phase with each other.

Abstract: An antenna includes a spiral coil conductor with a winding central portion defining a coil opening, and magnetic-substance sheets located along the coil opening. A curving portion or a bending portion is provided in the coil opening and the magnetic-substance sheets are provided in positions except a specific portion that is at least a portion of the curving portion or the bending portion.

Abstract: It is intended to, when abnormality in either one of two rotation detection sections with different detection frequencies occurs, quickly and highly accurately detect the abnormality to favorably deal with abnormality occurring during low engine rotation. It is determined that abnormality is present in the rotation phase detection section, when an absolute value of difference between an actual VTC angle detected by a rotation phase detection section and an integrated value of a VTC change angle detected by motor rotation sensor 201 with the higher detection frequency than the frequency of detection of the actual VTC angle by the rotation phase detection section is equal to or greater than a predetermined value.

Abstract: An inductor module includes a laminate where multiple insulator layers are laminated, a main line conductor in the shape of a straight line formed on the laminate, a current detection conductor that is formed on the laminate and magnetically coupled with the main line conductor, and coil conductors that are formed on the laminate and constitute an inductor element. An absolute value of a coupling coefficient between the main line conductor and inductor element, and an absolute value of a coupling coefficient between the current detection conductor and the inductor element, are each smaller than an absolute value of a coupling coefficient between the main line conductor and the current detection conductor. Thus, an inductor module that detects current and is used as an inductor element, and an electric power transmission system including the inductor module, are provided.

Abstract: The present invention relates to a control device and a control method for a variable valve timing mechanism that changes a valve timing by adjusting a rotational speed of a motor. The control device detects a phase angle RA1 based on an output of a crank angle sensor and an output of a cam angle sensor and calculates a change amount ?RA of a rotational phase based on a difference between a rotation amount of a sprocket and a rotation amount of the motor. The control device stops calculating change amount ?RA when a failure occurs in a motor rotation angle sensor. When a failure occurs in one of the crank angle sensor or the cam angle sensor, the control device stops calculating phase angle RA1 and calculates change amount ?RA using a normal one of the sensors and the motor rotation angle sensor.

Abstract: A piezoelectric element that includes a plurality of laminated piezoelectric films and adhesive layers. The piezoelectric films stretch and contract in a predetermined direction parallel to principal surfaces thereof when a voltage is applied thereto. The adhesive layers are formed partially between the piezoelectric films when seen from a plan view, are aligned at intervals in the predetermined direction of the stretching and contracting of the piezoelectric films and bond the piezoelectric films to each other. The adhesive layers are formed at both ends of the piezoelectric films in the predetermined direction.

Abstract: The present invention relates to an internal combustion engine including a VTC controller for controlling driving of a variable valve timing device and an engine control module (ECM) for calculating and transferring a valve timing control command. In the present invention, each of the VTC controller and the ECM detects whether an abnormality of a communication circuit used for transferring a control command is present or not. If the abnormality is detected, the VTC controller and the ECM set a target value for an abnormal state with the same characteristic, and perform a control operation based on the target value in the abnormal state. In this manner, a decrease in engine operability when an abnormality occurs in the communication circuit of a control command is suppressed.

Abstract: The present invention relates to a control device and a control method for a variable valve timing mechanism that changes a valve timing by adjusting a rotational speed of a motor. The control device detects a phase angle RA1 based on an output of a crank angle sensor and an output of a cam angle sensor and calculates a change amount ?RA of a rotational phase based on a difference between a rotation amount of a sprocket and a rotation amount of the motor. The control device stops calculating change amount ?RA when a failure occurs in a motor rotation angle sensor. When a failure occurs in one of the crank angle sensor or the cam angle sensor, the control device stops calculating phase angle RA1 and calculates change amount ?RA using a normal one of the sensors and the motor rotation angle sensor.

Abstract: The present invention relates to variable valve timing control device and control method, which change valve timing of an internal combustion engine. An operation amount for controlling the valve timing is computed, and an operation amount computed at position detection timing of a valve timing control system is divided and output until next position detection timing.

Abstract: In a control apparatus for a variable valve mechanism that varies a valve characteristic of an engine valve, in a saturated state in which a calculated manipulated variable of the variable valve mechanism exceeds an outputtable manipulated variable, convergence to a desired position is achieved while suppressing a response delay and an overshoot. If a feedforward manipulated variable calculated according to a reference response exceeds an outputtable limit manipulated variable, a saturating amount (feedforward manipulated variable—limit manipulated variable) is integrated. Upon completion of the integration, the feedforward manipulated variable is corrected based on an FF manipulated variable correction amount, and the integrated value of saturating amount is replaced by a value obtained by subtracting the FF manipulated variable correction amount each time a correction is made.