INFORMATION PROCESSING DEVICE, PORTABLE TERMINAL, FUNCTION EXECUTION METHOD, AND FUNCTION EXECUTION CONTROL PROGRAM

PROBLEM TO BE SOLVED: To provide an information processing device capable of appropriately determining whether motion of a housing is a motion for performing a preset function or not in order to avoid execution of a function not intended by a user.SOLUTION: A portable device (101) includes: an angular velocity information acquisition unit (11) configured to acquire angular velocity information indicative of angular velocity from a gyro sensor (2) configured to detect angular velocity of the portable device; and a function execution determination unit (12) configured to determine execution of a preset function provided that the number of changes in polarity of the angular velocity detected by the gyro sensor (2) is less than a predetermined value during a period from the time an absolute value of the angular velocity of a first polarity indicated by the acquired angular velocity information exceeds a preset first threshold value to the time an absolute value of the angular velocity of a second polarity opposite the first polarity exceeds a preset second threshold value.SELECTED DRAWING: Figure 1 【課題】筐体の動作が予め設定された機能を行う動作であるか否かを適切に判断することを可能とし、ユーザが意図しない機能が実行される虞を回避する。【解決手段】携帯機器（１０１）に生じる角速度を検出するジャイロセンサ（２）から角速度を示す角速度情報を取得する角速度情報取得部（１１）と、取得した角速度情報により示される第１極性の角速度の絶対値が、予め設定した第１閾値を超えた後、第１極性とは逆の極性である第２極性の角速度の絶対値が、予め設定した第２閾値を超えるまでに、ジャイロセンサ（２）が検出した角速度の極性の変化が所定値未満であれば、予め設定した機能を実行すると判定する機能実行判定部（１２）と、を備えている。【選択図】図１