Operation detection device for key operation of keyboard device, operation detection method of key operation, and keyboard device
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United States of America Patent
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May 23, 2023
Grant Date -
Aug 25, 2022
app pub date -
May 11, 2022
filing date -
Nov 20, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
An operation detection device for a key operation of a keyboard device includes a conductive unit configured to be disposed on each of keys, a substrate configured to be disposed facing each of the keys in a pressing direction of the keys. The substrate is provided with a sensor including at least first and second coils, the sensor being configured to be disposed spaced from one key so that at least one of the first or second coil outputs a signal corresponding to a distance between the one key and the respective sensor. The operation detection device includes a detection unit configured to detect a displacement of the one key in at least one of a yaw direction or a roll direction based on signals output from the first and second coils during a key pressing stroke of the one key.
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