公开(公告)号：US07420116B2

公开(公告)日：2008-09-02

申请号：US11261949

申请日：2005-10-27

申请人： Yuji Fujiwara

发明人： Yuji Fujiwara

IPC分类号： G10H7/00 ,  H02M5/00

CPC分类号： G10H1/0058 ,  G10F1/02 ,  G10G3/04 ,  G10H2210/155 ,  G10H2220/221 ,  G10H2240/016 ,  G10H2250/645

摘要： A music data modifier receives pieces of original music data from a master hybrid piano, and partially modifies the pieces of original music data to pieces of modified music data for a slave hybrid piano; each piece of original music data contains a series of values of a piece of motion data expressing continuous motion of the associated key, a series of values of a piece of time data expressing each expressing a time to obtain the associated value of the motion data and a piece of identification code expressing the key number assigned to the key; even if the music data modifier changes the piece of identification data from the key number to another key number, the piece of motion data still expresses the continuous motion of the key so that the slave hybrid piano exactly reproduce the key motion.

摘要翻译： 音乐数据修改器从主混合钢琴接收原始音乐数据，并将原始音乐数据片段部分地修改为用于从属混合钢琴的修改音乐数据; 每条原始音乐数据包含表示相关键的连续运动的一条运动数据的一系列值，表示每个表达时间的时间数据的一系列值，以表达时间以获得运动数据的相关联的值;以及 表示分配给该键的键编号的识别码; 即使音乐数据修改器将标识数据从密钥号改变为另一密钥号，则该片运动数据仍然表示密钥的连续运动，使得从属混合钢琴正确地再现键运动。

公开(公告)号：US07374443B2

公开(公告)日：2008-05-20

申请号：US10972432

申请日：2004-10-26

申请人： Kazuo Saitou ,  Yuji Fujiwara ,  Hiroyuki Takami ,  Shinichi Hagino ,  Hirotaka Shikano

发明人： Kazuo Saitou ,  Yuji Fujiwara ,  Hiroyuki Takami ,  Shinichi Hagino ,  Hirotaka Shikano

IPC分类号： H01R4/60

CPC分类号： A47L9/246

摘要： There are provided a flexible hose 6, a connection tube 7 in which one end is connected to the inner peripheral face of the flexible hose 6 from the end 10 of the flexible hose and another end is exposed outside of the flexible hose 6, and a mold resin 24 which fixes the flexible hose 6 and the connection tube 7 by being filled over from the outer peripheral face of the flexible hose 6 nearby the end of the flexible hose 6 to the outer peripheral face of the connection tube 7 which is exposed out of the flexible hose 6.

摘要翻译： 提供了柔性软管6，连接管7，其一端从柔性软管的端部10连接到柔性软管6的内周面，另一端暴露在柔性软管6的外部，并且 模具树脂24，其通过从柔性软管6的端部附近的柔性软管6的外周面向外露出的连接管7的外周面填充柔性软管6和连接管7 的柔性软管6。

公开(公告)号：US20070169608A1

公开(公告)日：2007-07-26

申请号：US11612870

申请日：2006-12-19

申请人： Yuji Fujiwara

发明人： Yuji Fujiwara

IPC分类号： G10F1/02

CPC分类号： G10G3/04 ,  G10F1/02

摘要： An automatic player piano is a combination between an acoustic piano and an automatic playing system, and a grand piano and an upright piano are used as the acoustic piano; the grand piano has action units prompter than action units of the upright piano so that a half-stroke recorded through the grand piano is not reproducible by the upright piano; the automatic playing system causes the hammers to rotate toward the strings without any escape thereby compensating the poor promptness with the short keystroke of the keys until the rotation of hammers.

摘要翻译： 自动演奏钢琴是原声钢琴和自动演奏系统之间的组合，钢琴和立式钢琴被用作原声钢琴; 盛大的钢琴比直立钢琴的行动单位更有行动单位，因此通过钢琴录制的半冲程不能由直立钢琴重现; 自动演奏系统使琴锤向琴弦转动而没有任何逃逸，从而通过键的短按键来补偿不良的快速性，直到琴弦的旋转。

公开(公告)号：US07235727B2

公开(公告)日：2007-06-26

申请号：US11077393

申请日：2005-03-10

申请人： Yuji Fujiwara

发明人： Yuji Fujiwara

IPC分类号： G10F1/02

CPC分类号： G10F1/02

摘要： In order to define movement of a particular key to be automatically operated, first-order trajectory data are generated, on the basis of performance information, which are indicative of variation over time of position, velocity and acceleration components of the particular key. Jerk component related to the movement of the particular key is calculated on the basis of the acceleration component in the first-order trajectory data, and second-order trajectory data are generated by modifying the first-order trajectory data with the calculated jerk component. Then, a drive device for driving the particular key is servo-controlled on the basis of the second-order trajectory data. In this way, nonconstant acceleration (or constant jerk) control, rather than constant acceleration control, can be performed to control driving of the key during a successive key depression, so as to allow the successively-depressed key to operate with an increased smoothness.

摘要翻译： 为了定义要自动操作的特定键的移动，基于性能信息生成指示特定键的位置，速度和加速度分量随时间变化的一阶轨迹数据。 基于一阶轨迹数据中的加速度分量来计算与特定键的移动有关的冲击分量，并且通过用所计算的加加速度分量修改一阶轨迹数据来生成二阶轨迹数据。 然后，基于二阶轨迹数据对用于驱动该特定键的驱动装置进行伺服控制。 以这种方式，可以执行非恒定加速度（或恒定加加速度）控制而不是恒定的加速度控制，以在连续按键期间控制键的驱动，从而允许依次按下的键以增加的平滑度进行操作。

公开(公告)号：US06992241B2

公开(公告)日：2006-01-31

申请号：US10992328

申请日：2004-11-17

申请人： Yuji Fujiwara

发明人： Yuji Fujiwara

IPC分类号： G10F1/02

CPC分类号： G10F1/02

摘要： An automatic player piano has a feedback control loop for each of the black/white keys; the controller firstly determines a reference trajectory, i.e., a target key position varied with time for each key to be moved in the play-back, and calculates a target key velocity, and compares a true key position reported from a key sensor and a true key velocity calculated from the true key position with the target key position and target key velocity for optimizing the duty ratio of the driving signal; the positional difference and the velocity difference are independently multiplied by a positional gain and a velocity gain so as to determine the optimum duty ratio; since the ratio of the velocity gain to the positional gain is 1 to 3, the key travels along the reference trajectory without oscillation and overshoot.

摘要翻译： 自动演奏器钢琴具有用于每个黑/白键的反馈控制回路; 控制器首先确定参考轨迹，即，随着时间的变化，每个键在回放中移动的目标键位置，并且计算目标键速度，并且比较从键传感器报告的真实键位置和真 由目标键位置的真实键位置和目标键速度计算出的关键速度，以优化驾驶信号的占空比; 位置差和速度差独立地乘以位置增益和速度增益，以便确定最佳占空比; 由于速度增益与位置增益的比值为1〜3，所以键沿参考轨迹行进而不发生振荡和过冲。

公开(公告)号：US20050211050A1

公开(公告)日：2005-09-29

申请号：US11077393

申请日：2005-03-10

申请人： Yuji Fujiwara

发明人： Yuji Fujiwara

IPC分类号： G10F1/02

CPC分类号： G10F1/02

摘要： In order to define movement of a particular key to be automatically operated, first-order trajectory data are generated, on the basis of performance information, which are indicative of variation over time of position, velocity and acceleration components of the particular key. Jerk component related to the movement of the particular key is calculated on the basis of the acceleration component in the first-order trajectory data, and second-order trajectory data are generated by modifying the first-order trajectory data with the calculated jerk component. Then, a drive device for driving the particular key is servo-controlled on the basis of the second-order trajectory data. In this way, nonconstant acceleration (or constant jerk) control, rather than constant acceleration control, can be performed to control driving of the key during a successive key depression, so as to allow the successively-depressed key to operate with an increased smoothness.

摘要翻译： 为了定义要自动操作的特定键的移动，基于性能信息生成指示特定键的位置，速度和加速度分量随时间变化的一阶轨迹数据。 基于一阶轨迹数据中的加速度分量来计算与特定键的移动有关的冲击分量，并且通过用所计算的加加速度分量修改一阶轨迹数据来生成二阶轨迹数据。 然后，基于二阶轨迹数据对用于驱动该特定键的驱动装置进行伺服控制。 以这种方式，可以执行非恒定加速度（或恒定加加速度）控制而不是恒定的加速度控制，以在连续按键期间控制键的驱动，从而允许依次按下的键以增加的平滑度进行操作。

公开(公告)号：US06800799B2

公开(公告)日：2004-10-05

申请号：US10383810

申请日：2003-03-07

申请人： Yuji Fujiwara ,  Rei Furukawa

发明人： Yuji Fujiwara ,  Rei Furukawa

IPC分类号： G10H700

CPC分类号： G10H1/0041 ,  G10H2240/031 ,  G10H2240/056

摘要： A user records a part of a piece of music performed on the composite audio system into and reproduces the performance from a floppy disc in ensemble with another part of the piece of music; while a compact disc player is producing an audio signal from audio data codes, the composite audio system produces event codes representative of local peaks in the audio signal for timing control, and stores these event codes together with event codes representative of note events and duration data codes in the floppy disc; while the composite audio system and compact disc player are reproducing the parts of the piece of music, the time intervals among the tones are prolonged and shrunk by using the event codes for timing control and actual local peaks so that the tones in one of the parts are produced synchronously with the tones of the other part.

摘要翻译： 用户将在复合音频系统上执行的一段音乐的一部分记录在与该音乐片段的另一部分组合的软盘中再现演奏; 当光盘播放器从音频数据代码产生音频信号时，复合音频系统产生表示用于定时控制的音频信号中局部峰值的事件代码，并将这些事件代码与表示音符事件和持续时间数据的事件代码一起存储 软盘中的代码; 而复合音频系统和光盘播放器正在再现这段音乐的部分，通过使用用于定时控制的事件代码和实际的局部峰值来延长和缩小音调之间的时间间隔，使得在其中一个部分中的音调 与其他部分的色调同步产生。

公开(公告)号：US06245985B1

公开(公告)日：2001-06-12

申请号：US09419621

申请日：1999-10-15

申请人： Tsutomu Sasaki ,  Tomoyuki Ura ,  Yuji Fujiwara

发明人： Tsutomu Sasaki ,  Tomoyuki Ura ,  Yuji Fujiwara

IPC分类号： G10H500

CPC分类号： G10F1/02

摘要： An automatic player piano has key sensors for producing digital key position signals representative of current key positions and a recording unit for producing pieces of music data information on the basis of the key motions; however, the key sensors have individualities, and vary the values of the digital key position signals in different ranges, respectively; the recording unit selects different components bits from each of the digital key position signal depending upon the value at a reference point so as to make the difference between the ranges small.

摘要翻译： 自动演奏器钢琴具有用于产生代表当前键位置的数字键位置信号的键传感器和用于根据键运动产生音乐数据信息的记录单元; 然而，关键传感器具有个性，并且分别改变不同范围内的数字键位置信号的值; 记录单元根据参考点处的值从每个数字键位置信号中选择不同的分量位，以使得范围之间的差小。

公开(公告)号：US5978201A

公开(公告)日：1999-11-02

申请号：US12063

申请日：1998-01-22

申请人： Yuji Fujiwara ,  Taro Kawabata ,  Yasuhiko Oba

发明人： Yuji Fujiwara ,  Taro Kawabata ,  Yasuhiko Oba

IPC分类号： G10F1/02 ,  G10C3/20 ,  G10H1/00 ,  H01H47/32 ,  H01H47/22

CPC分类号： G10C3/20 ,  H01H47/325

摘要： A solenoid driving circuit contains solenoids, each of which is driven to produce a magnetic field for driving each of keys of a player piano. A NPN transistor is provided to allow or block a flow of current across each solenoid. The solenoid is connected between a DC power source for providing a source voltage and a collector of the NPN transistor whose emitter is grounded. A drive signal, which is subjected to pulse-width modulation, is supplied to a base of the NPN transistor, so that the NPN transistor is switched over between ON and OFF. A diode is introduced to provide prescribed forward voltage for attenuation of the current across the solenoid when the NPN transistor is turned OFF. Herein, an anode of the diode is connected to a connection between the solenoid and NPN transistor, while a cathode of the diode is connected to a cathode of a zener diode having prescribed reverse voltage. An anode of the zener diode is connected to the DC power source. An effective time constant of the solenoid is represented in a mathematical form using the forward voltage, reverse voltage and source voltage as well as a real time constant of the solenoid. So, the solenoid driving circuit designed in such a way that the effective time constant of the solenoid is sufficiently small as compared to a maximum value of an operating frequency of the key of the player piano (i.e., action cutoff frequency of the player piano).

摘要翻译： 螺线管驱动电路包括螺线管，每个螺线管被驱动以产生用于驱动演奏者钢琴的每个键的磁场。 提供NPN晶体管以允许或阻止跨越每个螺线管的电流。 螺线管连接在用于提供源极电压的直流电源和发射极接地的NPN晶体管的集电极之间。 经受脉冲宽度调制的驱动信号被提供给NPN晶体管的基极，使得NPN晶体管在导通和截止之间切换。 当NPN晶体管截止时，引入二极管以提供规定的正向电压，以减小电磁线圈上的电流。 这里，二极管的阳极连接到螺线管和NPN晶体管之间的连接，而二极管的阴极连接到具有规定的反向电压的齐纳二极管的阴极。 齐纳二极管的阳极连接到直流电源。 使用正向电压，反向电压和电源电压以及螺线管的实时常数以数学形式表示螺线管的有效时间常数。 因此，螺线管驱动电路设计成使得螺线管的有效时间常数与演奏者钢琴的键的操作频率的最大值（即，演奏者钢琴的动作截止频率）相比足够小， 。

公开(公告)号：US5919030A

公开(公告)日：1999-07-06

申请号：US823756

申请日：1997-03-25

申请人： Makoto Iwatake ,  Hideki Ochi ,  Yuji Fujiwara ,  Hideya Tsuchida

发明人： Makoto Iwatake ,  Hideki Ochi ,  Yuji Fujiwara ,  Hideya Tsuchida

IPC分类号： F04D29/66

CPC分类号： F04D29/665

摘要： An electric fan comprises: a radial impeller for expelling the air trapped therein out of the impeller; a diffuser having a multiplicity of air passages separated by air guides, the air passages adapted to receive the air expelled from the impeller; a fan case for covering the impeller and the air guides; at least one throughhole which is formed in the fan case for each of the air passages; and a silencer equipped with a multiplicity of silencer cavities each having a predetermined volume and communicating with a corresponding one of the air passages, the silencer covering the fan case. The silencer is provided either on top of or beneath the fan case. Because the volumes of these silencer cavities may be chosen arbitrarily such that the silencer cavities may absorb noise caused by the interference between the impeller and the air passages, even audible noise may be suppressed sufficiently.

摘要翻译： 一种电动风扇，包括：一个径向叶轮，用于将从叶轮中捕获的空气排出; 扩散器，其具有由空气引导件分开的多个空气通道，所述空气通道适于接收从叶轮排出的空气; 用于覆盖所述叶轮和所述空气引导件的风扇壳体; 至少一个通孔，其形成在风扇壳体中，用于每个空气通道; 以及具有多个消音器空腔的消音器，每个消音器腔具有预定的体积并且与相应的一个空气通道连通，所述消声器覆盖所述风扇壳体。 消音器设置在风扇外壳的上方或下方。 因为这些消声腔的体积可以任意选择，使得消声器腔可以吸收由叶轮和空气通道之间的干扰引起的噪声，所以甚至可以充分抑制可听见的噪声。