公开(公告)号：US5481214A

公开(公告)日：1996-01-02

申请号：US277063

申请日：1994-07-19

申请人： Takashi Tamaki ,  Mitsuya Ohie

发明人： Takashi Tamaki ,  Mitsuya Ohie

IPC分类号： G09G3/00 ,  G09G3/20 ,  H03K7/08 ,  H03M1/56 ,  H03K3/017

CPC分类号： H03K7/08

摘要： A voltage to pulse-width conversion circuit having counter which counts a reference frequency and produces a digital output signal having a multi-bit digital value; a decoder which decode the multi-bit digital value of the digital output signal and outputs first and second decoded signals; a digital/analog converter which receives the first and second decoded signals and produces an analog signal having an analog voltage; a comparator which compares the reference voltage and the analog voltage and produces a comparison result signal and a setting circuit which sets the level of the output node to a predetermined voltage level in response to the first and second decoded signals.

摘要翻译： 具有对基准频率进行计数并产生具有多位数字值的数字输出信号的计数器的电压到脉冲宽度转换电路; 解码器，其对数字输出信号的多位数字值进行解码并输出第一和第二解码信号; 数字/模拟转换器，其接收第一和第二解码信号并产生具有模拟电压的模拟信号; 比较器，其比较所述参考电压和所述模拟电压，并产生比较结果信号和设置电路，所述设置电路响应于所述第一和第二解码信号将所述输出节点的电平设置为预定电压电平。

公开(公告)号：US5296321A

公开(公告)日：1994-03-22

申请号：US998658

申请日：1992-12-29

申请人： Yuji Kawanishi ,  Kunihiro Ichimura ,  Takashi Tamaki ,  Takahiro Seki ,  Mitsuhiro Ikeda

发明人： Yuji Kawanishi ,  Kunihiro Ichimura ,  Takashi Tamaki ,  Takahiro Seki ,  Mitsuhiro Ikeda

IPC分类号： G02F1/1337 ,  G02F1/133 ,  G02F1/135 ,  G03C1/73 ,  C09K19/52

CPC分类号： G02F1/133711 ,  C09K19/408 ,  C09K19/60 ,  C09K19/601 ,  C09K19/603 ,  G02F1/133788 ,  G02F1/133362 ,  G02F2202/14 ,  Y10S430/146 ,  Y10S430/163

摘要： A photorecording element consists essentially of a transparent substrate, a layer of a macromolecular compound capable of undergoing a reversible change in structure upon exposure to light, deposited by adsorption on the transparent substrate, and a liquid crystal layer disposed directly on the layer of macromolecular compound. A method for the production of the photorecording element comprises applying on a transparent substrate a mixture of a liquid crystal substance with a macromolecular compound capable of undergoing a reversible change in structure upon exposure to light and allowing the applied layer of the mixture to stand at rest or by first applying the macromolecular compound on the transparent substrate and then adding the liquid crystal substance thereto. A liquid crystal cell incorporating the photorecording element is also disclosed.

摘要翻译： 光记录元件基本上由透明基材组成，能够在透明基板上通过吸附而沉积的曝光后的结构的可逆变化的高分子化合物层和直接设置在高分子化合物层上的液晶层 。 一种用于制备光记录元件的方法包括在透明基底上施加液晶物质与能够在曝光后经历结构可逆变化的大分子化合物的混合物，并使混合物的施加层静置 或者首先将高分子化合物施加到透明基板上，然后向其中加入液晶物质。 还公开了并入光接收元件的液晶单元。

公开(公告)号：US5254804A

公开(公告)日：1993-10-19

申请号：US502535

申请日：1990-03-30

申请人： Takashi Tamaki ,  Yasutoshi Kaneko

发明人： Takashi Tamaki ,  Yasutoshi Kaneko

IPC分类号： G10F1/02 ,  G10H1/34 ,  G10C3/18

CPC分类号： G10H1/346 ,  G10F1/02 ,  Y10S84/07

摘要： An electronic piano system provides an automatic performance piano capable of automatically carrying out pre-recorded performance, plus a key-return speed detecting unit and/or a string-striking speed presuming unit. When a depressed key is released so that a key is to be returned to its original position, a key-return speed is occurred, which is detected by the key-return speed detecting unit. On the other hand, when the key is depressed so that a hammer strikes a string in order to generate the corresponding sound, a string-striking speed of hammer is occurred. Based on a detected key-striking speed, the string-striking speed presuming unit presumes the corresponding string-striking speed. Thus, by use of the detected key-return speed and/or presumed string-striking speed, the automatic performance can be carried out with high fidelity.

摘要翻译： 电子钢琴系统提供能够自动执行预先录制的性能的自动演奏钢琴，以及按键返回速度检测单元和/或弦击打速度推定单元。 当释放按下的键以使键返回到其原始位置时，产生由键盘返回速度检测单元检测到的按键返回速度。 另一方面，当按下键以使琴槌撞击琴弦以产生相应的声音时，发生锤击的敲击速度。 基于检测到的键击速度，串击速度推定单元假设相应的串击速度。 因此，通过使用检测的键返回速度和/或推定的串击速度，可以高保真地执行自动演奏。

公开(公告)号：US07348482B2

公开(公告)日：2008-03-25

申请号：US10052838

申请日：2002-01-17

申请人： Jun Ishii ,  Takashi Tamaki

发明人： Jun Ishii ,  Takashi Tamaki

IPC分类号： G10H7/00

CPC分类号： G10H1/0075 ,  G10H7/02

摘要： A nibble stream containing MIDI music data words and synchronous nibbles and an external audio signal are selectively converted to an audio-frequency signal, which in turn is converted to a set of PCM codes for storing it in a compact disc; and the audio frequency signal, which is demodulated from the PCM data codes, is analyzed to see which is the origin of the audio frequency signal on the basis of the signal level and what sort of modulation technique was employed on the basis of features of the audio frequency signal such as peak-to-peak intervals and similarity to reference waveforms so that the nibble stream or the external audio signal is exactly reproduced from the audio frequency signal.

摘要翻译： 包含MIDI音乐数据字和同步半字节和外部音频信号的半字节流被选择性地转换为音频信号，音频信号又转换成一组PCM码，用于将其存储在光盘中; 并且从PCM数据码解调的音频信号被分析，以基于信号电平来查看哪个是音频信号的原点，并且基于什么样的调制技术 诸如峰 - 峰间隔的音频信号和与参考波形的相似性，使得半字节流或外部音频信号从音频信号精确地再现。

公开(公告)号：US07002068B2

公开(公告)日：2006-02-21

申请号：US10417982

申请日：2003-04-17

申请人： Shinya Koseki ,  Rokurota Mantani ,  Takashi Tamaki ,  Nobuo Sugiyama

发明人： Shinya Koseki ,  Rokurota Mantani ,  Takashi Tamaki ,  Nobuo Sugiyama

IPC分类号： G10H7/00

CPC分类号： G10H7/00 ,  G10H1/0041 ,  G10H3/18 ,  G10H7/02 ,  G10H2210/301 ,  H04S7/30

摘要： A grand piano generates acoustic tones through vibrations of strings and sound board so that the acoustic tones are converted to analog audio signals at recording points over the sound board, and a group of waveform data sets are produced from the analog audio signal through sampling and analog-to-digital conversion; when electronic tones are generated, delay parameters and volume parameters are determined on the basis of differences between the recording points and tone radiating points occupied by loud speakers, the sets of waveform data series are sequentially read out from the group of waveform data sets and are modified with the delay parameters and volume parameters so that the electronic tones become close to the acoustic tones.

公开(公告)号：US06407321B2

公开(公告)日：2002-06-18

申请号：US09754780

申请日：2001-01-04

申请人： Takashi Tamaki ,  Katsuo Itou

发明人： Takashi Tamaki ,  Katsuo Itou

IPC分类号： G10F102

CPC分类号： G01V8/20 ,  G10G3/04

摘要： A jig is used in an assemblage between key sensors and an acoustic piano, and the jig has a shutter guide assembled with a casing of optical sensor array for aligning slits with target trajectories of shutter plates and pieces of adhesive double coated tape adhered to the shutter plates for aligning the shutter plates with associated white/black keys, wherein the shutter plates are inserted into the slits so that the shutter plates are placed on the target trajectories, and the white/black keys are moved along the target trajectories until they are brought into contact with the pieces of adhesive double coated tape for temporality tacking the shutter plates to the associated white/black keys.

摘要翻译： 夹具用于钥匙传感器和原声钢琴之间的组合中，并且夹具具有与光学传感器阵列的壳体组装的快门导板，用于将狭缝与快门板的目标轨迹对准，并粘贴到快门的粘合剂双面胶带 用于将快门板与相关联的白/黑键对准的板，其中快门板插入狭缝中，使得快门板放置在目标轨迹上，并且白/黑键沿着目标轨迹移动，直到它们被带入 与粘合剂双面胶带接触，用于将快门板临时固定到相关联的白/黑键。

公开(公告)号：US06265647B1

公开(公告)日：2001-07-24

申请号：US09489301

申请日：2000-01-21

申请人： Takashi Tamaki ,  Katsuo Itou

发明人： Takashi Tamaki ,  Katsuo Itou

IPC分类号： G10C300

CPC分类号： G10C5/005

摘要： A keyboard musical instrument is a combination of an acoustic piano, a silent system and an electronic sound generating system, and the silent system includes a change-over mechanism and a shank stopper connected to the change-over mechanism so as to be changed between a free position and a blocking position, wherein a change-over mechanism gives rise to a rotation of the shank stopper around vertical axes spaced apart from each other on a horizontal virtual plane so that the hammer stopper is free from a twist.

摘要翻译： 键盘乐器是声学钢琴，无声系统和电子声音发生系统的组合，无声系统包括转换机构和连接到转换机构的杆止动件，以便在一个 自由位置和阻挡位置，其中转换机构在水平虚拟平面上引起柄止动件相对于彼此间隔开的垂直轴线的旋转，使得锤止动器不受扭曲。

公开(公告)号：US6075196A

公开(公告)日：2000-06-13

申请号：US026847

申请日：1998-02-20

申请人： Yuji Fujiwara ,  Takashi Tamaki ,  Yasuhiko Oba ,  Taro Kawabata

发明人： Yuji Fujiwara ,  Takashi Tamaki ,  Yasuhiko Oba ,  Taro Kawabata

IPC分类号： G10F1/02 ,  G10C3/16 ,  G10H1/00 ,  G10H1/053 ,  G10H1/34 ,  G10H7/00

CPC分类号： G10H1/344 ,  G10H1/0066

摘要： A brand-new player piano is designed to have a compatibility with the conventional player piano and the electronic musical instrument based on the MIDI standard while providing a capability of playing a highly skilled music performance such as the performance technique of half stroke. The player piano creates a new version of performance information which uses a key-depression event frame in addition to a string-striking event frame and a key-release event frame. Herein, the string-striking event frame contains extensional information for a string-striking velocity, while the key-release event frame contains extensional information for a key-release velocity. The extensional information is not specifically defined by the MIDI standard and is neglected by the conventional player piano. The key-depression event frame, which is newly introduced by this player piano and is neglected by the conventional player piano, represents a note number and a key-depression velocity as well as extensional information for the key-depression velocity. Using the extensional information, it is possible to control each of the velocities more precisely. The performance information is recorded on a recording media. At a reproduction, the player piano produces trajectory data and position data with respect to each of the keys on the basis of the performance information. The trajectory data represent a key-depression-uniform-motion trajectory and a key-depression-slow-down trajectory along which a key moves when being depressed. The trajectory data also represent a key-release-uniform-motion trajectory and a key-release-slow-up trajectory along which the key moves when being released.

摘要翻译： 全新的演奏器钢琴被设计为与传统的演奏者钢琴和基于MIDI标准的电子乐器兼容，同时具有演奏高度熟练的音乐表演的能力，例如半冲程的表演技术。 播放器钢琴创建一个新版本的演奏信息，除了打字事件帧和按键释放事件帧之外，还会使用按键抑制事件帧。 这里，串击事件帧包含用于串击速度的延伸信息，而密钥释放事件帧包含用于密钥释放速度的延伸信息。 扩展信息没有由MIDI标准具体定义，并被传统的演奏者钢琴忽略。 由该演奏者钢琴新引入并被传统演奏者钢琴忽略的按键抑制事件框架表示琴键数和按键速度以及按键速度的拉伸信息。 使用延伸信息，可以更精确地控制每个速度。 演奏信息被记录在记录媒体上。 在再现时，演奏者钢琴根据演奏信息产生关于每个琴键的轨迹数据和位置数据。 轨迹数据表示按键移动的按键均匀运动轨迹和按键减速轨迹。 轨迹数据也表示键释放均匀运动轨迹和按键释放缓慢轨迹，当键被释放时，键移动。