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：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：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：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：USD703592S1

公开(公告)日：2014-04-29

申请号：US29469190

申请日：2013-10-08

申请人： Pansoo Kwon ,  Yuji Fujiwara

设计人： Pansoo Kwon ,  Yuji Fujiwara

公开(公告)号：USD698289S1

公开(公告)日：2014-01-28

申请号：US29425105

申请日：2012-06-20

申请人： Pansoo Kwon ,  Yuri Kaneda ,  Yuji Fujiwara

设计人： Pansoo Kwon ,  Yuri Kaneda ,  Yuji Fujiwara

公开(公告)号：USD691517S1

公开(公告)日：2013-10-15

申请号：US29425109

申请日：2012-06-20

申请人： Pansoo Kwon ,  Shinno Kato ,  Yuri Kaneda ,  Yuji Fujiwara

设计人： Pansoo Kwon ,  Shinno Kato ,  Yuri Kaneda ,  Yuji Fujiwara

公开(公告)号：US08350142B2

公开(公告)日：2013-01-08

申请号：US12767281

申请日：2010-04-26

申请人： Yuji Fujiwara ,  Tsutomu Sasaki

发明人： Yuji Fujiwara ,  Tsutomu Sasaki

IPC分类号： G10H1/00

CPC分类号： G10H1/0016 ,  G10F1/02 ,  G10H1/0066 ,  G10H2230/011

摘要： An automatic player piano is equipped with an electronic supporting system, which makes a player learn an optimum pedal stroke to a half pedal region; while the player is practicing a music tune on the piano, the electronic supporting system monitors the damper pedal; when the player starts to depress the damper pedal, the electronic supporting system exerts an assisting force on the damper pedal so as to make the player feel the damper pedal light; when the damper pedal reaches an entrance of the half pedal region, the electronic supporting system removes the assisting force from the damper pedal so that the player feels the damper pedal heavy, whereby the player learns the pedal stroke to the half pedal region through the change of load borne by the player.

摘要翻译： 自动演奏器钢琴配有电子支撑系统，使玩家学习到一个半踏板区域的最佳踏板行程; 当玩家正在钢琴上练习音乐曲线时，电子支撑系统监视制音踏板; 当玩家开始按压减震踏板时，电子支撑系统对减震踏板施加辅助力，使玩家感觉到制动踏板亮; 当阻尼器踏板到达半踏板区域的入口时，电子支撑系统从减震踏板移除辅助力，使得玩家感觉到减震踏板变重，由此玩家通过改变来学习踏板行程到半踏板区域 的负载由玩家承担。