Input apparatus, control system, handheld apparatus, and calibration method

摘要

An input apparatus includes a casing, an output section, a processing section, a judgment section, and a calibration section. The output section includes a reference potential and outputs, as a detection signal, a fluctuation of a potential with respect to the reference potential, that corresponds to a movement of the casing. The processing section executes processing for generating a control command for controlling a screen based on an output value of the output section. The judgment section judges an operational state of the input apparatus. The calibration section executes, when it is judged that the input apparatus is moving, a calibration mode as processing for correcting the reference potential by obtaining the output value over a data obtainment period that is a sampling period of the output value and calculating a correction value of the reference potential based on the obtained output value.

主权项

1. An input apparatus, comprising:
an output section including an angular velocity sensor for outputting a reference potential and a fluctuation of a potential with respect to the reference potential, that corresponds to a movement of the input apparatus; a processing section for executing processing for generating a control command for controlling a screen based on an output value of the output section; a judgment section for judging an operational state of the input apparatus; and a calibration section for:
executing, when it is judged by the judgment section that the operational state of the input apparatus is at least one of a movement state and an immovable state, a calibration mode as processing for correcting the reference potential of the angular velocity sensor by:
responsive to determining the input apparatus is in the movement state, selecting a first cutoff frequency corresponding to a relative longer data obtainment period,responsive to determining the input apparatus is in the immoveable state, selecting a second cutoff frequency corresponding to a relative shorter data obtainment period, andobtaining the output value from the angular velocity sensor over the selected data obtainment period that is a sampling period of the output value,calculating a correction value of the reference potential by determining a DC component of the obtained output value from the angular velocity sensor to update the reference potential using the calculated correction value, andcarrying out processing for canceling the fluctuation of the reference potential by subtracting the correction value from the obtained output value from the angular velocity sensor.