公开(公告)号：US07238873B2

公开(公告)日：2007-07-03

申请号：US11054412

申请日：2005-02-09

申请人： Yuji Fujiwara ,  Yasuhiko Ohba ,  Koichi Ishizaki

发明人： Yuji Fujiwara ,  Yasuhiko Ohba ,  Koichi Ishizaki

IPC分类号： G10H1/00

CPC分类号： G10F1/02

摘要： An automatic player piano is equipped with solenoid-operated pedal actuators for driving the pedals in a playback; since a large quantity of induction is coupled to the solenoid, the driving signal is delayed due to long time constant so that the pedals behave differently from those in the original performance; a controller, which is incorporated in the automatic player, firstly determines a target mean current of the driving signal to be theoretically required for the reproduction of the pedal motion, and a temporary means current twice as much as the target mean current at the maximum; the controller supplies the driving signal at the temporary mean current to the solenoid in an early stage of each cycle, and, thereafter, recovers the driving signal to the target mean current so that the pedal motion becomes close to that in the original performance.

摘要翻译： 自动演奏器钢琴配备有用于在回放中驱动踏板的电磁操作踏板致动器; 由于大量的感应耦合到螺线管，驱动信号由于长时间常数而被延迟，使得踏板的行为与原始性能不同; 合并在自动播放器中的控制器首先确定理论上需要用于踏板运动的再现的驱动信号的目标平均电流以及最大值的目标平均电流的两倍的临时装置; 控制器在每个循环的早期阶段将临时平均电流的驱动信号提供给螺线管，然后将驱动信号恢复到目标平均电流，使得踏板运动变得接近原始性能。

公开(公告)号：US20050211049A1

公开(公告)日：2005-09-29

申请号：US11054412

申请日：2005-02-09

申请人： Yuji Fujiwara ,  Yasuhiko Ohba ,  Koichi Ishizaki

发明人： Yuji Fujiwara ,  Yasuhiko Ohba ,  Koichi Ishizaki

IPC分类号： G10F1/02 ,  G11B7/00

CPC分类号： G10F1/02

摘要： An automatic player piano is equipped with solenoid-operated pedal actuators for driving the pedals in a playback; since a large quantity of induction is coupled to the solenoid, the driving signal is delayed due to long time constant so that the pedals behave differently from those in the original performance; a controller, which is incorporated in the automatic player, firstly determines a target mean current of the driving signal to be theoretically required for the reproduction of the pedal motion, and a temporary means current twice as much as the target mean current at the maximum; the controller supplies the driving signal at the temporary mean current to the solenoid in an early stage of each cycle, and, thereafter, recovers the driving signal to the target mean current so that the pedal motion becomes close to that in the original performance.

摘要翻译： 自动演奏器钢琴配备有用于在回放中驱动踏板的电磁操作踏板致动器; 由于大量的感应耦合到螺线管，驱动信号由于长时间常数而被延迟，使得踏板的行为与原始性能不同; 合并在自动播放器中的控制器首先确定理论上需要用于踏板运动的再现的驱动信号的目标平均电流以及最大值的目标平均电流的两倍的临时装置; 控制器在每个循环的早期阶段将临时平均电流的驱动信号提供给螺线管，然后将驱动信号恢复到目标平均电流，使得踏板运动变得接近原始性能。

公开(公告)号：US07268289B2

公开(公告)日：2007-09-11

申请号：US11032190

申请日：2005-01-10

申请人： Shigeru Muramatsu ,  Yasuhiko Ohba ,  Yuji Fujiwara

发明人： Shigeru Muramatsu ,  Yasuhiko Ohba ,  Yuji Fujiwara

IPC分类号： G10H1/32

CPC分类号： G10H1/344 ,  G10F1/02 ,  G10H2230/011

摘要： A set of formation data codes, which includes action event codes and duration codes, is loaded in an automatic player piano, and a controller interprets the action event codes for driving the solenoid-operated key actuators; since the solenoid-operated key actuators slowly push the associated keys, the hammers do not reach the strings, and any piano tone is not produced; the plungers make the keys sunk to different depth so that the keys are laid on a artistic pattern; the controller sequentially changes the artistic pattern, and offers an artistic visual expression to the audience.

摘要翻译： 包括动作事件代码和持续时间代码的一组地层数据代码被加载到自动演奏器钢琴中，并且控制器解释用于驱动电磁操作键致动器的动作事件代码; 由于电磁操作键执行器缓慢推动相关键，锤不到达琴弦，并且不产生任何钢琴音调; 柱塞使钥匙沉没到不同的深度，使钥匙放置在艺术图案上; 控制器依次改变艺术风格，为观众提供艺术视觉表现。

公开(公告)号：US07202409B2

公开(公告)日：2007-04-10

申请号：US11030548

申请日：2005-01-06

申请人： Yuji Fujiwara ,  Yasuhiko Ohba

发明人： Yuji Fujiwara ,  Yasuhiko Ohba

IPC分类号： G10H1/32 ,  G10H3/00

CPC分类号： G10F1/02 ,  G10H1/0066 ,  G10H1/344 ,  G10H2220/311 ,  G10H2230/011

摘要： An automatic player piano includes keys driven for the angular motion through a hybrid feedback control loop; a controller, a key position sensor, a plunger velocity sensor and a solenoid-operated key actuator form parts of the hybrid feedback control loop for each key, and a current key position and a plunger velocity are reported to the controller; the controller determines a series of target position or a reference trajectory and a target velocity, and periodically compares a composite current position and a composite current velocity, which are determined on the basis of the current key position and current plunger velocity, with the target position and target velocity to see whether or not the key travels on the reference trajectory; if the answer is negative, the controller adjusts the driving signal to a proper duty ratio so as to force the key to travel on the reference trajectory.

摘要翻译： 自动演奏器钢琴包括通过混合反馈控制回路驱动角动作的键; 控制器，键位传感器，柱塞速度传感器和电磁操作键致动器构成每个键的混合反馈控制回路的一部分，并将当前键位置和柱塞速度报告给控制器; 控制器确定一系列目标位置或参考轨迹和目标速度，并且周期性地比较基于当前键位置和当前柱塞速度确定的复合当前位置和复合电流速度与目标位置 和目标速度，以查看键是否在参考轨迹上行进; 如果答案为负，则控制器将驱动信号调整到适当的占空比，以迫使钥匙在参考轨迹上行进。

公开(公告)号：US20050150361A1

公开(公告)日：2005-07-14

申请号：US11032190

申请日：2005-01-10

申请人： Shigeru Muramatsu ,  Yasuhiko Ohba ,  Yuji Fujiwara

发明人： Shigeru Muramatsu ,  Yasuhiko Ohba ,  Yuji Fujiwara

IPC分类号： G10F1/02 ,  G10F1/06 ,  G10H1/00 ,  G10H1/34 ,  G10H7/00 ,  G10H1/02 ,  G01P3/00 ,  G10H5/00

CPC分类号： G10H1/344 ,  G10F1/02 ,  G10H2230/011

摘要： A set of formation data codes, which includes action event codes and duration codes, is loaded in an automatic player piano, and a controller interprets the action event codes for driving the solenoid-operated key actuators; since the solenoid-operated key actuators slowly push the associated keys, the hammers do not reach the strings, and any piano tone is not produced; the plungers make the keys sunk to different depth so that the keys are laid on a artistic pattern; the controller sequentially changes the artistic pattern, and offers an artistic visual expression to the audience.

摘要翻译： 包括动作事件代码和持续时间代码的一组地层数据代码被加载到自动演奏器钢琴中，并且控制器解释用于驱动电磁操作键致动器的动作事件代码; 由于电磁操作键执行器缓慢推动相关键，锤不到达琴弦，并且不产生任何钢琴音调; 柱塞使钥匙沉没到不同的深度，使钥匙放置在艺术图案上; 控制器依次改变艺术风格，为观众提供艺术视觉表现。

公开(公告)号：US20060016325A1

公开(公告)日：2006-01-26

申请号：US11030548

申请日：2005-01-06

申请人： Yuji Fujiwara ,  Yasuhiko Ohba

发明人： Yuji Fujiwara ,  Yasuhiko Ohba

IPC分类号： G10H3/00

CPC分类号： G10F1/02 ,  G10H1/0066 ,  G10H1/344 ,  G10H2220/311 ,  G10H2230/011

摘要： An automatic player piano includes keys driven for the angular motion through a hybrid feedback control loop; a controller, a key position sensor, a plunger velocity sensor and a solenoid-operated key actuator form parts of the hybrid feedback control loop for each key, and a current key position and a plunger velocity are reported to the controller; the controller determines a series of target position or a reference trajectory and a target velocity, and periodically compares a composite current position and a composite current velocity, which are determined on the basis of the current key position and current plunger velocity, with the target position and target velocity to see whether or not the key travels on the reference trajectory; if the answer is negative, the controller adjusts the driving signal to a proper duty ratio so as to force the key to travel on the reference trajectory.

摘要翻译： 自动演奏器钢琴包括通过混合反馈控制回路驱动角动作的键; 控制器，键位传感器，柱塞速度传感器和电磁操作键致动器构成每个键的混合反馈控制回路的一部分，并将当前键位置和柱塞速度报告给控制器; 控制器确定一系列目标位置或参考轨迹和目标速度，并且周期性地比较基于当前键位置和当前柱塞速度确定的复合当前位置和复合电流速度与目标位置 和目标速度，以查看键是否在参考轨迹上行进; 如果答案为负，则控制器将驱动信号调整到适当的占空比，以迫使钥匙在参考轨迹上行进。

公开(公告)号：US20080072743A1

公开(公告)日：2008-03-27

申请号：US11944339

申请日：2007-11-21

申请人： Yasuhiko Ohba ,  Rei Furukawa

发明人： Yasuhiko Ohba ,  Rei Furukawa

IPC分类号： G10H7/00

CPC分类号： G10H3/125 ,  G10F1/02 ,  G10H1/366 ,  G10H5/005 ,  G10H2210/066

摘要： An automatic player piano includes a voice recognizer and a piano controller; while a user is singing a song, the voice recognizer analyzes the voice signal representative of vocal tones so as to determine the loudness and pitch of each vocal tone, and successively sends music data codes each expressing a note-on event, key number closest to the pitch of vocal tone and a velocity and music data codes each expressing a note-off and the key number to the piano controller together with music data codes duplicated from a set of music data codes stored in the memory; and the piano controller selectively drives the black and white keys with driving signal produced on the basis of the music data codes so as to play the accompaniment of the song.

摘要翻译： 自动演奏钢琴包括语音识别器和钢琴控制器; 当用户正在唱歌时，语音识别器分析表示声音的语音信号，以便确定每个声乐的响度和音调，并且连续地发送各自表示音符事件的音乐数据代码，密钥号码最接近 音乐音调的音调以及每个表示音符关闭的音乐数据代码以及琴键控制器的键号以及从存储在存储器中的一组音乐数据代码复制的音乐数据代码; 并且钢琴控制器通过基于音乐数据代码产生的驱动信号来选择性地驱动黑白键，以便播放歌曲的伴奏。

公开(公告)号：US07094961B2

公开(公告)日：2006-08-22

申请号：US11169077

申请日：2005-06-27

申请人： Tomoyuki Ura ,  Yasuhiko Ohba

发明人： Tomoyuki Ura ,  Yasuhiko Ohba

IPC分类号： G10H1/00 ,  G06F11/00

CPC分类号： G10H1/34 ,  G10F1/02 ,  G10H1/0008 ,  G10H1/348

摘要： An automatic player piano includes an acoustic piano and an electronic system for reenacting a performance on the acoustic piano; a self-diagnosis subroutine program runs on a microprocessor of the electronic system so as to diagnose solenoid-operated actuators with built-in plunger sensors and component parts of the acoustic piano such as keys, pedals, action units and hammers on the basis of pieces of plunger data, pieces of key data and pieces of hammer data; thus, the mechanical components of the piano are diagnosed as well as the electric components through the execution of the self-diagnosis subroutine program.

公开(公告)号：US07432429B2

公开(公告)日：2008-10-07

申请号：US11261528

申请日：2005-10-27

申请人： Shigeru Muramatsu ,  Yasuhiko Ohba ,  Hiroyuki Murakami

发明人： Shigeru Muramatsu ,  Yasuhiko Ohba ,  Hiroyuki Murakami

IPC分类号： G10D3/00 ,  G10C3/26

CPC分类号： G09B15/00

摘要： A pedaling aid is combined with an acoustic piano, and assists a physically handicapped person in performing a piece of music on the acoustic piano; the pedaling aid includes a human interface, a pedal actuator and a controller, and the pedal actuator is equipped with a locator and a coupling device; a user moves the pedal actuator in the vicinity of the acoustic piano, and couples the pedal actuator to the acoustic piano at a proper position with the assistance of the locator and coupling device; while the physically handicapped person is fingering on the acoustic piano, the human interface is kept around the head so that the physically handicapped person manipulates the human interface with the chin, mouth, teeth or tongue; since the human interface produces a signal representative of a target position, the controller makes the pedal actuator to move the pedal to the target position.

摘要翻译： 蹬踏辅助装置与原声钢琴结合在一起，协助身体残疾人在钢琴上演奏一段音乐; 踏板辅助装置包括人机界面，踏板致动器和控制器，并且踏板致动器配备有定位器和联接装置; 使用者在声学钢琴附近移动踏板致动器，并且借助于定位器和联接装置将踏板致动器耦合到正弦位置; 而身体残疾的人在钢琴上是指法，人体界面保持在头部周围，使得身体残疾的人操纵与下巴，嘴巴，牙齿或舌头的人体界面; 由于人机接口产生代表目标位置的信号，所以控制器使踏板致动器将踏板移动到目标位置。

公开(公告)号：US20060213357A1

公开(公告)日：2006-09-28

申请号：US11360317

申请日：2006-02-22

申请人： Yasuhiko Ohba

发明人： Yasuhiko Ohba

IPC分类号： G10H3/00

CPC分类号： G10H1/344 ,  G10F1/02 ,  G10H2220/305

摘要： An automatic player piano is equipped with a preliminary data producer comprising an experimental routine and an editor; a motion controller forces each of the black and white keys to travel on a test trajectory at different values of key velocity so that the black or white key gives rise to rotation of hammer by means of an action unit, and a hammer sensor varies the magnitude of a hammer position signal depending upon the current hammer position; the hammer velocity is converted to a value of MIDI velocity so that a table producer correlates the values of key velocity with the values of MIDI velocity; while an automatic player is performing a music passage, the motion controller exactly determines a value of key velocity on the basis of the relation already determined by the preliminary data producer.