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8138402 |
Keyboard musical instrument and solenoid drive mechanism
A keyboard musical instrument has a solenoid including a plunger and a coil into which the plunger is inserted, a drive unit for applying voltage to the solenoid, and a key which moves together...
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7847168 |
System and method for driving actuators in a reproducing piano
A method and system for controlling actuators in a mechanical reproducing piano or other instrument. In one implementation, a single finite state machine is provided to control all the actuators....
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7692078 |
Key actuating apparatus and key actuation control system
In order to realize a small and light key actuating apparatus for actuating a key which is rotatably supported with respect to a frame, a key actuating apparatus (7) is provided which includes a...
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7687691 |
System and method for driving actuators in reproducing piano
A method and system for controlling actuators in a mechanical reproducing piano or other instrument. In one implementation, a single finite state machine is provided to control all the actuators....
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7547833 |
Key driving apparatus and keyboard musical instrument
A key driving apparatus for driving a key may include, but is not limited to, a first elastically deformable unit. The first elastically deformable unit is configured to receive a first control...
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7435895 |
Automatic playing system used for musical instruments and computer program used therein for self-teaching
An automatic playing system is independent of acoustic pianos, and is designed to perform music tunes expressed by sets of MIDI music data codes on the acoustic pianos; since the acoustic pianos...
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6525257 |
Arrangement pressure point generation in keyboards for piano-like keyboard instruments
The invention relates to an arrangement, with which pressure point characteristics can be simulated, such that a key stroke typical of a cembalo, as well as the key characteristics of an organ can...
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5652399 |
Automatic player piano and estimator for acceleration of depressed key incorporated in the automatic player piano
An automatic player piano controls keys to be rotated by solenoid-operated actuator units in such a manner as to pass a reference point on a trajectory of the key at a reference velocity in a...
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5600521 |
Automatic performing apparatus with power supply controller
An automatic performing apparatus that executes recording and reproduction of a performance includes a diagnostic signal generator for sending a power supply control circuit at least one of normal...
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5530198 |
Piano-like keyboard musical instrument for automatically playing music through feedback control with key acceleration and key velocity
An automatic player piano is implemented by a combination of an acoustic piano and an automatic playing system, and a velocity feedback loop and an acceleration feedback loop control...
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5276270 |
Solenoid drive system for an automatic performing apparatus
A solenoid drive system enabling an automatic performing apparatus to control the intensity of key depression with respect to individual keys. Voltage waveform data is provided for each of the...
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5210367 |
Automatic performance device for a keyboard instrument
An automatic performance device for a keyboard instrument such as piano, organ, cembalo and celesta includes operators such as keys and a pedal provided in a keyboard instrument for producing...
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4169401 |
Circuit for reducing solenoid hold-in power in electronic player pianos and similar keyboard operated instruments
There is disclosed a method and apparatus for reducing the power required to activate the soft and playing mechanism of an electronic player piano and similar instruments. In accordance with the...
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3405584 |
Apparatus for electrically actuating a musical instrument
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