Abstract: An information notification device includes a longitudinal-data storage unit that accumulates, for a plurality of samples, longitudinal data indicating a temporal change in foot size of one sample, a user-data storage unit that stores user data containing a gender, an age, and a past foot size of a prediction target person, a foot-size prediction unit that predicts, based on a current foot size of the prediction target person and the longitudinal data, a change in foot size of the prediction target person in a period from a current point in time to a future point in time, and a notification processing unit that displays, on a display unit, the prediction of the change in foot size of the prediction target person in the period from the current point in time to the future point in time.

Abstract: An emotion estimating device, an emotion estimating system, and an emotion estimating method capable of estimating an emotion of a subject based on information obtained from daily activities can be provided. An emotion estimating device includes an interface that receives input of walking data of a subject measured by a measurement device and emotion data obtained by quantifying the emotion of the subject, a storage that stores the walking data and the emotion data, and an computer that obtains corresponding data in which a plurality of walking parameters included in the walking data stored in the storage are associated with the emotion data. When the interface newly receives the input of the walking data, the computer estimates the emotion of the subject from the plurality of walking parameters included in the newly received walking data, and outputs information indicating the estimated emotion of the subject.

Abstract: In response to a test signal received at a test terminal, one terminal of a first computation circuit and three terminals of a second computation circuit are each provided with a reference voltage, or a ground potential, which is available at reference voltage supply terminals associated with photo detectors. Another terminal of the first computation circuit and the second computation circuit are each provided with a detected voltage. If the functions of the computation circuits are not defective, function signals will be obtained each having a value which corresponds to an imbalance between the detected voltage and the reference voltage. Thus, only one test terminal is required, which reduces the size of the semiconductor integrated circuit.