KEY SWITCH DEVICE AND KEYBOARD
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United States of America Patent
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Issued Date -
Dec 25, 2014
app pub date -
Apr 22, 2014
filing date -
Jun 19, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A key switch device includes a key top, a switch having a first contact and a second contact and in which a contact state between the first contact and the second contact changes in accordance with a movement distance of the pressed key top, and a control device configured to acquire a signal indicative of the contact state between the first contact and the second contact to determine whether or not the switch is in the on state by comparing a contact state value corresponding to the acquired signal and a threshold value that is arbitrarily set, and to transmit an on signal when determining that the switch is in the on state.
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