Abstract: Provided is a sensor device being a signal processing device, including: a capacitor; a sensor unit configured to wirelessly transmit, in a case in which electric power of a predetermined amount or more is accumulated in the capacitor, a first signal (SG1) through use of the electric power accumulated in the capacitor; a reception unit configured to receive a radio wave transmitted from a power transmission device being an external device; and a transmission antenna functioning as a second transmission unit, the transmission antenna being configured to wirelessly transmit, in response to reception of the radio wave, a response signal (SG3) being a second signal generated based on the received radio wave without using the electric power accumulated in the capacitor.

Abstract: A wireless communication device includes: an antenna for transmitting and receiving a radio wave, a rectifying circuit that is connected to the antenna and rectifies the radio wave received by the antenna to generate voltage, an internal circuit that operates by the voltage generated by the rectifying circuit, and a switch circuit that is disposed contactlessly with respect to the antenna and operates on the basis of an output signal of the internal circuit, wherein the switch circuit includes a coupling wiring and a switch element, and the operation of the switch element varies the impedance of the antenna so that communication can be carried out.

Abstract: A wireless communication device includes: an antenna for transmitting and receiving a radio wave, a rectifying circuit that is connected to the antenna and rectifies the radio wave received by the antenna to generate voltage, an internal circuit that operates by the voltage generated by the rectifying circuit, and a switch circuit that is disposed contactlessly with respect to the antenna and operates on the basis of an output signal of the internal circuit, wherein the switch circuit includes a coupling wiring and a switch element, and the operation of the switch element varies the impedance of the antenna so that communication can be carried out.

Abstract: A radio receiver, configured to use an impulse UWB, includes: a reception antenna which receives the impulse UWB, a reception unit which amplifies the received impulse UWB and detects an envelope of the impulse UWB, maximum-peak and minimum-peak detection units which detect a maximum value and minimum value of the envelope, respectively, a comparator which acquires signal data from the envelope with an initial threshold value, a baseband unit which measures an error rate of the signal data, an MPU which calculates a correction value based on the error rate, and an arithmetic unit which calculates a corrected threshold value based on the maximum, minimum and correction values. The arithmetic unit transmits the corrected threshold value to the comparator. The comparator acquires the signal data from the envelope based on the corrected threshold value transmitted from the arithmetic unit.

Abstract: A radio receiver, configured to use an impulse UWB, includes: a reception antenna which receives the impulse UWB, a reception unit which amplifies the received impulse UWB and detects an envelope of the impulse UWB, maximum-peak and minimum-peak detection units which detect a maximum value and minimum value of the envelope, respectively, a comparator which acquires signal data from the envelope with an initial threshold value, a baseband unit which measures an error rate of the signal data, an MPU which calculates a correction value based on the error rate, and an arithmetic unit which calculates a corrected threshold value based on the maximum, minimum and correction values. The arithmetic unit transmits the corrected threshold value to the comparator. The comparator acquires the signal data from the envelope based on the corrected threshold value transmitted from the arithmetic unit.

Abstract: A push & lock unit includes cam sections mounted on an outer wall of a rotary body that is disposed on an underside of an operating body, and each one of the cam sections contacts a saw-tooth section disposed on a lower end of a rib on an inner wall of a cover and a projection disposed at a bottom center of a housing in response to an up and down movement of the operating body, whereby the rotary body is rotated. When the operating body is pushed, a push face thereof is locked at a position almost flush with an outer face of a panel. When the operating body is pushed once more, it is released from the lock, and restores to a state where the operating body projects from the outer face of the panel.

Abstract: A lever switch includes a case, a lever, a wiring board, a sliding body, and a movable contact. The wiring board has fixed contacts and is disposed at an opposite side to the lever with respect to the case. The sliding body has a sliding part and a second arm part having a supporting portion, and is disposed between the case and the wiring board. The movable contact is mounted to the sliding part and has an end to be brought into contact with the fixed contact. A first arm part of the lever extends from the main body part through the case and the wiring board. The second arm part extends from the wiring board through the sliding part. The holding portion and the supporting portion are engaged with each other at an opposite side to the case with respect to the wiring board.

Abstract: In a rotary switch, a latching portion having a recess or a hole provided in a decorative cover engages with a locking portion having a protrusion provided on an operating knob, and a catching portion of a rotary body contacts with an inner side of the locking portion on one side closer to the rotary body. The decorative cover is thus attached to the operating body.

Abstract: A rotation angle detection device includes: a detection portion that detects detection angle that univocally corresponds to rotation angle of a rotating body which is within a predetermined range, wherein the detection angle linearly increases from a minimum value to a maximum value as the rotation angle increases within a unit range, and the detection angle changes from the maximum value to the minimum value or from the minimum value to the maximum value at a boundary between unit ranges that are adjacent to each other; and a correction portion that corrects the detection angle so that the detection angle detected in the predetermined range has linear characteristics, if the boundary between the unit ranges is contained in the predetermined range.

Abstract: A holder is disposed in the case. The holder is mounted with an actuator that moves in the predetermined direction and a wiring board having a detector. A positioning mechanism between relevant components for detecting the positions of components is provided such as a wiring board and a holder, the position of magnet in particular. In this way, the magnet and the detector opposing to each other are positioned. As a result, when a vehicle switch is assembled, the variation in position of the magnet and detector is reduced.

Abstract: Regarding a switch used for various controls of a motor vehicle in particular and a switch device using the switch, it becomes possible to simplify the configuration and to perform reliable detection of trouble. A first detector is disposed on a surface opposing to a magnet fitted to an actuator, and a second detector is disposed thereunder. A controller detects magnetism of the magnet by using the first detector and the second detector. In case one of the detectors is out of order, it can also be detected from ON/OFF signal from the first detector and the second detector.

Abstract: A rotation angle detection device includes: a detection portion that detects detection angle that univocally corresponds to rotation angle of a rotating body which is within a predetermined range, wherein the detection angle linearly increases from a minimum value to a maximum value as the rotation angle increases within a unit range, and the detection angle changes from the maximum value to the minimum value or from the minimum value to the maximum value at a boundary between unit ranges that are adjacent to each other; and a correction portion that corrects the detection angle so that the detection angle detected in the predetermined range has linear characteristics, if the boundary between the unit ranges is contained in the predetermined range.

Abstract: A holder is disposed in the case. The holder is mounted with an actuator that moves in the predetermined direction and a wiring board having a detector. A positioning mechanism between relevant components for detecting the positions of components is provided such as a wiring board and a holder, the position of magnet in particular. In this way, the magnet and the detector opposing to each other are positioned. As a result, when a vehicle switch is assembled, the variation in position of the magnet and detector is reduced. Accordingly, the vehicle switch is enhanced in switching accuracy and becomes capable of reliable operation.

Abstract: Regarding a switch used for various controls of a motor vehicle in particular and a switch device using the switch, it becomes possible to simplify the configuration and to perform reliable detection of trouble. A first detector is disposed on a surface opposing to a magnet fitted to an actuator, and a second detector is disposed thereunder. A controller detects magnetism of the magnet by using the first detector and the second detector. In case one of the detectors is out of order, it can also be detected from ON/OFF signal from the first detector and the second detector.

Abstract: The push-type vehicle switch has a case, an actuator, a movable contact, and a cap made of elastic material. The case has an opening and a fixed contact implanted inside thereof. The actuator is contained in the case reciprocably. The movable contact is provided facing the fixed contact and connects to and disconnects from the fixed contact according to reciprocable movement of the actuator. The cap covers the opening of the case.

Abstract: A switch provided with a fixed contact and a movable contact coming into contact with each other and separating from each other. The surface of at least one of the fixed contact and the movable contact is provided with a plurality of recesses whose edges are overlapped with each other, and also provided with a plurality of projections. The projections formed on the contact surface have sharp-pointed tips which can break an oxide film or the like if it is formed on the contact surface, thereby achieving stable contact.

Abstract: The push-type vehicle switch has a case, an actuator, a movable contact, and a cap made of elastic material. The case has an opening and a fixed contact implanted inside thereof. The actuator is contained in the case reciprocably. The movable contact is provided facing the fixed contact and connects to and disconnects from the fixed contact according to reciprocable movement of the actuator. The cap covers the opening of the case.

Abstract: A switch provided with a fixed contact and a movable contact coming into contact with each other and separating from each other. The surface of at least one of the fixed contact and the movable contact is provided with a plurality of recesses whose edges are overlapped with each other, and also provided with a plurality of projections. The projections formed on the contact surface have sharp-pointed tips which can break an oxide film or the like if it is formed on the contact surface, thereby achieving stable contact.

Abstract: A switch apparatus, including: a substantially box-like case; a cylinder section; a lever; a substantially cylindrical columnar support; an engagement convex section; an engagement concave section; and a press-in section. The cylinder section is provided at a substantial center of the case and has at an inner circumference thereof a reception section. The lever is attached to the case and is pivoted and operated to provide an electric connection of switch contacts provided in the case. The columnar support is inserted to the cylinder section and has one end that is abutted with the reception section. The engagement convex section is provided at one of the reception section and the columnar support and the engagement concave section is provided at the other. The press-in section is provided at one of the engagement convex section or the engagement concave section. The engagement convex section is pressed-in to and engaged with the engagement concave section via the press-in section.

Abstract: A switch apparatus, including: a substantially box-like case; a cylinder section; a lever; a substantially cylindrical columnar support; an engagement convex section; an engagement concave section; and a press-in section. The cylinder section is provided at a substantial center of the case and has at an inner circumference thereof a reception section. The lever is attached to the case and is pivoted and operated to provide an electric connection of switch contacts provided in the case. The columnar support is inserted to the cylinder section and has one end that is abutted with the reception section. The engagement convex section is provided at one of the reception section and the columnar support and the engagement concave section is provided at the other. The press-in section is provided at one of the engagement convex section or the engagement concave section. The engagement convex section is pressed-in to and engaged with the engagement concave section via the press-in section.