| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve let-off feeling with the keyboard of an electronic musical instrument while maintaining excellent repeated key striking. <P>SOLUTION: The key 10 is supported by a key frame 20. The front end of the key 10 is biased upward by the oscillating lever 40. The load 64 to be driven by an actuator 63 is formed at the back of the mass 42 of the oscillating lever 40. The key switch 52 and the proximity sensor 55 detect the oscillating position of the key when pressed or released. The load control circuit 70 controls the actuators 63 depending on the oscillating position of the key 10 and moves the load 64 back and forth to engage the load 64 and the mass 42 with each other when the key is pressed or to release them when the key is released. <P>COPYRIGHT: (C)2009,JPO&INPIT |
