| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a keyboard device can find accurately a state of a hammer driven by a key, by simple constitution. <P>SOLUTION: The keyboard device determines whether a virtual hammer contacts with the key 11 (S32), when a key displacement x is not D or more (S31:No). The decision is carried out by comparing a hammer tentative displacement with a stationary hammer position. That is, the virtual hammer is determined to be released from the contact with the key 11, when the tentative displacement is larger than the stationary hammer position corresponding to the key displacement x, and the virtual hammer is determined to be in contact with the key 11, when the tentative position is equal to or smaller than the stationary hammer position corresponding to the key displacement x. <P>COPYRIGHT: (C)2009,JPO&INPIT |
