DEPRESSING OPERATION DETECTOR AND DEPRESSING OPERATION DETECTION METHOD

To provide a depressing operation detector and a depressing operation detection method with which it is possible to suppress the possibility of detection of a depressing operation which a user feels uncomfortable from occurring due to the influence of vibration.SOLUTION: An arithmetic processing device that includes the depressing operation detector comprises: a contact detection unit 11 for detecting contact on a touch panel by a user; a pressed depth detection unit 12 for detecting a pressed depth on the touch panel; a depressing operation determination unit 13 for determining the presence of a depressing operation on the basis of the contact and pressed depth on an operation unit and the magnitude of a pressed depth threshold; an increment/decrement frequency detection unit 15 for detecting the occurrence frequency of increment/decrement of the pressed depth at each given interval of time; and a determination control unit 14 for changing the content of determination process by the depressing operation determination unit 13. The determination control unit 14 determines the occurrence frequency of increment/decrement of the pressed depth which is detected at each given interval of time and the magnitude of a frequency threshold while contact on the operation unit is not detected, and changes, on the basis of the determination result, the pressed depth threshold used for determination by the depressing operation determination unit 13.SELECTED DRAWING: Figure 2 【課題】ユーザにとって違和感のある押下操作の検出が振動の影響で発生することを抑制できる、押下操作検出装置および押下操作検出方法を提供する。【解決手段】押下操作検出装置を含む演算処理装置は、ユーザによるタッチパネルに対する接触を検出する接触検出部１１、タッチパネルに対する押下量を検出する押下量検出部１２、操作部に対する接触および押下量と押下量閾値の大小に基づいて押下操作の有無を判定する押下操作判定部１３、押下量の増減の発生頻度を一定時間毎に検出する増減頻度検出部１５、押下操作判定部１３による判定処理の内容を変える判定制御部１４、を備える。判定制御部１４は、操作部に対する接触が検出されていない状態下で、一定時間毎に検出される押下量の増減の発生頻度と頻度閾値の大小を判定し、判定結果に基づいて押下操作判定部１３が判定に用いる押下量閾値を変更する。【選択図】図２