Mobile information terminal and operation state determination method

摘要

A mobile information terminal to determine whether a user's operation state is one-handed operation or two-handed operation. The mobile information terminal includes a pressure sensor array that acquires a gripping pressure distribution; a gripping pressure logger that records time-series changes in gripping pressure at each pressure sensor forming the pressure sensor array; a gripping pressure change point detection unit that includes a gripping pressure change amount calculation section that acquires time-series changes in gripping pressure at each pressure sensor and determines whether the amount of change in gripping pressure per unit time exceeds a predetermined value at any pressure sensor; and an operation state determination section that determines the operation state of the user of the mobile information terminal is one-handed operation when the amount of change in gripping pressure per unit time exceeds the predetermined value at any pressure sensor.

主权项

1. A mobile information terminal provided with a pressure sensor array that acquires a gripping pressure distribution, the mobile information terminal comprising:
circuitry configured to function as
a gripping pressure logger adapted to record time-series changes in gripping pressure at each pressure sensor forming the pressure sensor array;a gripping pressure change point detection unit comprising a gripping pressure change amount calculation section adapted to acquire time-series changes in gripping pressure at each pressure sensor and to determine whether the amount of change in gripping pressure per unit time exceeds a predetermined value at any pressure sensor; andan operation state determination section adapted to determine that the operation state of the mobile information terminal of the user of the mobile information terminal is one-handed operation when the amount of change in gripping pressure per unit time exceeds the predetermined value at any pressure sensor, wherein the gripping pressure change point detection unit further comprises a change frequency counting section adapted to count the number of times the amount of change in gripping pressure per unit time exceeds a predetermined value in each predetermined period of time, the number being referred to as a change frequency; and the operation state determination section determines that the operation state of the mobile information terminal of the user of the mobile information terminal is one-handed operation in a period of time in which the change frequency exceeds a predetermined value.