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    • 7. 发明公开
    • KEYBOARD DEVICE
    • EP3531252A1
    • 2019-08-28
    • EP17862783.2
    • 2017-10-10
    • Topre Corporation
    • SATO, TakatoshiTOYOSAWA, Yuichi
    • G06F3/023G06F3/02H01H13/70H01H36/00
    • A keyboard device that is applicable to various kinds of applications with high responsivity is provided.
      The keyboard device includes a group of keys 10 composed of a plurality of keys to which key addresses are assigned; a memory 13 in which, for each of the plurality of keys, threshold data for determining whether the key has been depressed is writable and readable in a memory address corresponding to a corresponding one of the key addresses; a key capacitance detecting unit 15 that detects a capacitance of the key corresponding to the key address that is selected; a capacitance-voltage converting unit that converts the capacitance of the key detected by the key capacitance detecting unit into a voltage; a data converting unit 16 that reads threshold data in the memory address in the memory corresponding to the key address that is selected to convert the threshold data into analog data; and a depression determining unit 18 that compares the analog data from the data converting unit with the voltage from the capacitance-voltage converting unit to determine whether the key has been depressed.