Abstract: A data processing apparatus includes an arithmetic circuit that performs an acquiring step of acquiring swing data indicating relationship between a physical quantity concerning an amount of deformation of an object to be measured and time, a determining step of determining whether the swing data indicates the physical quantity concerning the amount of deformation of the object to be measured, which occurs when the object to be measured is swung, to determine whether the swing data is to be deleted, and a deleting step of deleting the swing data if it is determined that the swing data does not indicate the physical quantity concerning the amount of deformation of the object to be measured, which occurs when the object to be measured is swung.

Abstract: A sensor unit includes: a sensor that is attached to a measurement target object becoming deformed in response to a swing taken with the measurement target object and that generates an output signal indicating a relationship between a physical quantity related to an amount of deformation of the measurement target object and a time; a feature value generation circuit that generates a feature value, the feature value being a parameter indicating a feature of the swing, on the basis of the output signal obtained by the sensor; and a communication unit that is attached to the measurement target object and that transmits the feature value to an external device by wireless communication or wired communication.

Abstract: A processing device includes an operation circuit that determines based on a first signal a swing start time, the first signal being acquired from a sensor that is attached to a striking member for striking a to-be-struck object by being swung and that detects deformation of the striking member when the striking member is swung. An absolute value of a difference between a reference value and a value of the first signal is defined as a first difference value. The operation circuit executes a first determination step in which an impact time is determined based on one or more times at which the first difference value becomes greater than or equal to a first determination value.

Abstract: Provided is a sensor unit including a first sensor portion that detects deformation of a measuring target object and a second sensor portion that detects deformation of the measuring target object, in which in a state in which the first sensor portion and the second sensor portion are attached to the measuring target object, the first sensor portion and the second sensor portion are fixed to the measuring target object such that the measuring target object is disposed between the first sensor portion and the second sensor portion in a first direction, and a physical property value of the first sensor portion and a physical property value of the second sensor portion are changed according to first deformation of the measuring target object.

Abstract: A sensor signal generation device includes a charge amplifier and a voltage amplifier circuit that convert a physical quantity of an observation target outputted from a sensor element into a voltage signal and output the voltage signal, and a correction unit that outputs a sensor signal obtained by correcting the voltage signal using frequency characteristics of the charge amplifier and the voltage amplifier circuit.

Abstract: A hit position estimation device includes a sensor and a calculation unit. The sensor is attached to a shaft of a golf club and outputs a sensor signal including twisting of the shaft. The calculation unit estimates a position at which a ball hits a head from a twist component when the ball hits the head of the golf club, by using the sensor signal.

Abstract: An impact detection device includes a sensor that is attached to sports equipment including a columnar portion and a hitting portion connected to the columnar portion and is attached not at the hitting portion but at the columnar portion, and that is configured to output a sensor signal obtained by the sports equipment being swung, and a feature data extraction unit configured to detect, by using the sensor signal, from a temporal change of the sensor signal outputted by the hitting portion externally receiving pressure, timing at which the hitting portion externally receives the pressure.

Abstract: A grip force estimation device includes a sensor that is attached to sports equipment including a columnar portion having a grip portion at one end and a hitting portion connected to the columnar portion and is attached not at the grip portion but at the columnar portion, and that is configured to detect at least one of bending and twisting of the sports equipment and output detected bending and/or twisting as a sensor signal, a feature data extraction unit configured to extract feature data including a feature when a waveform generated by the hitting portion being externally applied with pressure is attenuated by using the sensor signal, and a grip force estimation unit configured to estimate pressure applied to the grip portion by using the feature data.

Abstract: A control lever for a transmission of a vehicle comprising a frame of the vehicle, a pair of rods pivotally connected to the control lever, which rods are arranged at right angles with each other, a housing fixedly secured to the frame, a spherical bearing for mounting the control lever on the housing, the spherical bearing comprising an outer race mounted in the housing, and a spherical bushing mounted on the control lever within the outer race so as to allow a sliding contact of the spherical bushing with the outer race, a cover fixedly secured to the control lever, which cover has a pair of guide slots formed therein positioned diametrically opposite sides to each other relative to the control lever, and a pair of guide pins fixedly secured to the housing, which guide pins are aligned with other in a direction parallel to one of the rods and adapted to be inserted within the guide slots.