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1. 发明授权

US06933494B2 Optical sensor heads exhibiting regularity in optical characteristics and optical sensor system using the same 有权
标题翻译：具有光学特性的光学传感器头和使用其的光学传感器系统
公开(公告)号：US06933494B2
公开(公告)日：2005-08-23
申请号：US10418021
申请日：2003-04-17
申请人： Tadaharu Kato , Tomoyuki Ura , Tsutomu Sasaki
发明人： Tadaharu Kato , Tomoyuki Ura , Tsutomu Sasaki
IPC分类号： G10H1/055 , G10H1/34 , H01L31/12 , H01J5/02
CPC分类号： G10H1/344 , G10H1/0553 , G10H2220/305 , G10H2240/255
摘要： An optical sensor system includes a light emitting unit, a light detecting unit, light radiating optical sensor heads connected through optical fibers to the light emitting unit and light receiving optical sensor heads connected through optical fibers to the light detecting unit, and light is selectively distributed to the light radiating optical sensor heads for radiating light beams from both side surfaces of each sensor head to the adjacent light receiving optical sensor heads for converting the incident light to photo-current; each light radiating optical sensor head has prisms for splitting the light into two beams; however, the stray light is produced at the edge between the reflection surfaces; the stray light is reduced or predictably controlled by forming textured pattern on the side surfaces, a photo-shield member or notches; otherwise, the edge is sharpened by separately forming the prisms.
摘要翻译：光传感器系统包括发光单元，光检测单元，通过光纤连接到发光单元的光辐射光学传感器头和通过光纤连接到光检测单元的光接收光学传感器头，并且选择性地分布光到用于将每个传感器头的两个侧表面的光束照射到相邻的光接收光学传感器头的光辐射光学传感器头，用于将入射光转换成光电流; 每个光辐射光学传感器头具有用于将光分成两束的棱镜; 然而，杂散光在反射表面之间的边缘产生; 通过在侧表面上形成纹理图案，光屏蔽构件或凹口来减少或可预测地控制杂散光; 否则，通过单独形成棱镜来锐化边缘。

2. 发明授权

US07161137B2 Optical transducer system having light emitting elements and light detecting elements both regulable in output characteristics 有权
标题翻译：具有发光元件和光检测元件的光学换能器系统均可调节输出特性
公开(公告)号：US07161137B2
公开(公告)日：2007-01-09
申请号：US11027944
申请日：2005-01-04
申请人： Tomoyuki Ura , Tsutomu Sasaki , Yasuhiko Ohba , Masahisa Hashimoto
发明人： Tomoyuki Ura , Tsutomu Sasaki , Yasuhiko Ohba , Masahisa Hashimoto
IPC分类号： G01V8/10 , G01J1/34 , G01J1/28
CPC分类号： G10H1/344
摘要： Keys, which are incorporated in an automatic player piano, are monitored with an optical transducer system. The optical transducer system includes sensor heads provided on both sides of the key trajectories, LEDs connected to predetermined sensor heads through optical fibers, LDDs connected to the other sensor heads through optical fibers and a controlling unit. A luminescence controller is connected to the LEDs for optimizing the luminescence, and bias controllers are respectively connected to the LDDs. The luminescence controller and bias controllers optimize the luminescence of emitted light and the bias level of electric signals so that the optical transducer system is free from the individuality of component parts and the deterioration.
摘要翻译：使用光学换能器系统监视并入自动演奏器钢琴的琴键。光学传感器系统包括设置在键轨迹两侧的传感器头，通过光纤连接到预定传感器头的LED，通过光纤连接到其它传感器头的LDD和控制单元。发光控制器连接到LED以优化发光，并且偏置控制器分别连接到LDD。发光控制器和偏置控制器优化发射光的发光和电信号的偏置电平，使得光学传感器系统不受组件的个性化和劣化。

3. 发明授权

US06297437B1 Keyboard musical instrument and information processing system incorporated therein for discriminating different kinds of key motion 有权
标题翻译：键入乐器和信息处理系统，用于区分不同种类的关键动作
公开(公告)号：US06297437B1
公开(公告)日：2001-10-02
申请号：US09394805
申请日：1999-09-20
申请人： Tomoyuki Ura , Tsutomu Sasaki
发明人： Tomoyuki Ura , Tsutomu Sasaki
IPC分类号： G10C312
CPC分类号： G10H1/0553 , G10H1/344 , Y10S84/07
摘要： A keyboard musical instrument includes an acoustic piano for generating acoustic tones, a silent system for rebounding the hammer assemblies between the escape from the key action mechanisms and strikes against strings and automatic playing system for actuating the key action mechanisms without fingering, and the automatic playing system generates electronic tones on the basis of the key motions monitored by associated key sensors, wherein the space between the rest position and the end position is divided into plural sections, and a controller calculates a key velocity in each of the plural sections so as to exactly determine the key motion, thereby improving the fidelity of the electronic sounds to the key motion.
摘要翻译：键盘乐器包括用于产生声学音调的原声钢琴，用于在钥匙动作机构的逃脱与弦之间的锤击组件的反弹的无声系统以及用于无键指动的键动作机构的自动演奏系统，以及自动演奏系统基于由相关联的密钥传感器监视的关键运动产生电子音调，其中休息位置和结束位置之间的空间被分成多个部分，并且控制器计算多个部分中的每个部分中的键速度，以便精确确定关键运动，从而提高电子声音对关键运动的保真度。

4. 发明授权

US06229081B1 Keyboard musical instrument, position sensing device and light-emitting controller both incorporated therein 有权
标题翻译：键盘乐器，位置感测装置和发光控制器均并入其中
公开(公告)号：US06229081B1
公开(公告)日：2001-05-08
申请号：US09396097
申请日：1999-09-14
申请人： Tomoyuki Ura , Tsutomu Sasaki
发明人： Tomoyuki Ura , Tsutomu Sasaki
IPC分类号： G10G304
CPC分类号： G10H1/344 , G10H2220/305
摘要： An automatic player piano is equipped with a position detecting device for detecting current positions of the black/white keys, and the position detecting device radiates light beams across the trajectories of the black/white keys, wherein the position detecting device stores a variable relation between a relative value of the amount of light and the current positions for determining the current positions so that the position detecting device keeps the reliability of the current positions against aged deterioration.
摘要翻译：自动演奏器钢琴配备有用于检测黑/白键的当前位置的位置检测装置，并且位置检测装置辐射横跨黑/白键的轨迹的光束，其中位置检测装置存储用于确定当前位置的光量和当前位置的相对值，使得位置检测装置保持当前位置的可靠性，防止老化。

5. 发明授权

US06245985B1 Data converter for enhancing resolution, method for converting data codes and keyboard musical instrument equipped with the data converter 有权
标题翻译：用于增强分辨率的数据转换器，用于转换数据代码的方法和配备有数据转换器的键盘乐器
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。

6. 发明授权

US5824930A Keyboard musical instrument having key monitor exactly discriminating key motion 失效
标题翻译：键盘乐器具有精确辨别键运动的按键显示
公开(公告)号：US5824930A
公开(公告)日：1998-10-20
申请号：US658700
申请日：1996-06-05
申请人： Tomoyuki Ura , Tsutomu Sasaki
发明人： Tomoyuki Ura , Tsutomu Sasaki
IPC分类号： G10H1/18 , G10H1/053 , G10H1/34 , G10G3/04
CPC分类号： G10H1/344 , G10H2220/305 , G10H2230/011
摘要： A keyboard musical instrument continuously monitors a key motion, and determines present key state on the basis of the previous key state, the present key position and a lapse of time during the previous key state so as to exactly control a tone generation.
摘要翻译：键盘乐器连续地监视关键运动，并且基于先前的键状态，当前键位置和在先前的键状态期间的时间流逝来确定当前键状态，以精确地控制音产生。

7. 发明申请

US20050145781A1 Optical transducer system having light emitting elements and light detecting elements both regulable in output characteristics 有权
标题翻译：具有发光元件和光检测元件的光学换能器系统均可调节输出特性
公开(公告)号：US20050145781A1
公开(公告)日：2005-07-07
申请号：US11027944
申请日：2005-01-04
申请人： Tomoyuki Ura , Tsutomu Sasaki , Yasuhiko Ohba , Masahisa Hashimoto
发明人： Tomoyuki Ura , Tsutomu Sasaki , Yasuhiko Ohba , Masahisa Hashimoto
IPC分类号： G10F1/02 , G10H1/34 , H01J40/14
CPC分类号： G10H1/344
摘要： Keys, which are incorporated in an automatic player piano, are monitored with an optical transducer system; the optical transducer system includes sensor heads provided on both sides of the key trajectories, LEDs connected to predetermined sensor heads through optical fibers, LDDs connected to the other sensor heads through optical fibers and a controlling unit; a luminescence controller is connected to the LEDs for optimizing the luminescence, and bias controllers are respectively connected to the LDDs; the luminescence controller and bias controllers optimize the luminescence of emitted light and the bias level of electric signals so that the optical transducer system is free from the individuality of component parts and aged deterioration.
摘要翻译：使用光学传感器系统来监视并入自动演奏器钢琴中的琴键; 光传感器系统包括设置在键轨迹两侧的传感器头，通过光纤连接到预定传感器头的LED，通过光纤连接到其它传感器头的LDD和控制单元; 发光控制器连接到LED以优化发光，偏压控制器分别连接到LDD; 发光控制器和偏置控制器优化发射光的发光和电信号的偏置电平，使得光学传感器系统不受组件的个性化和老化的恶化。

8. 发明授权

US07121737B2 Light emitting unit operative at high coupling efficiency, optical sensor system and musical instrument using the same 有权
公开(公告)号：US07121737B2
公开(公告)日：2006-10-17
申请号：US10420312
申请日：2003-04-22
申请人： Tadaharu Kato , Shigeru Muramatsu , Tsutomu Sasaki
发明人： Tadaharu Kato , Shigeru Muramatsu , Tsutomu Sasaki
IPC分类号： G02B6/00 , G02B6/36
CPC分类号： G10C3/12 , G02B6/322 , G02B6/4204 , G02B6/4292 , G02B6/4298 , G02B6/43 , G10G3/00
摘要： A light emitting device includes an optical fiber plug formed with a through-hole into which a bundle of optical fibers is inserted and a light-emitting device holder formed with a through-hole in which a condenser lens and a light emitting device are accommodated, and the optical fiber plug is assembled with the light-emitting device holder so that the light emitting device is optically coupled to the optical fiber through the condenser lens; a positioning device, a hyperboloid lens surface or a reflecting surface is formed in the optical fiber plug/light emitting device holder, condenser lens or the inner surface of the light-emitting device holder so that the light incident on the light input end is increased by virtue of the exact positioning between the optical fiber and optical axis, reduction of aberration or increase of light directed to the condenser lens.

9. 发明授权

US06940005B2 Keyboard musical instrument for exactly producing tones and hammer sensor varying output signal exactly representing physical quantity of hammer 有权
标题翻译：键盘乐器，用于精确地产生音调和锤子传感器，改变输出信号，正好表示锤子的物理量
公开(公告)号：US06940005B2
公开(公告)日：2005-09-06
申请号：US10293181
申请日：2002-11-13
申请人： Shigeru Muramatsu , Tsutomu Sasaki , Tadaharu Kato
发明人： Shigeru Muramatsu , Tsutomu Sasaki , Tadaharu Kato
IPC分类号： G10F1/02 , G01D5/347 , G10C3/18 , G10G3/04 , G10H1/00 , G10H1/34
CPC分类号： G10F1/02 , G01D5/34715 , G01D5/34776 , G10G3/04
摘要： A hammer sensor includes a photo-filter plate movable together with a hammer assembly and having a base plate fixed to the hammer shank and an arc pattern formed on the base plate and different in transparency from the base plate, a photo radiating element radiating a light beam toward the arc pattern and a photo detecting element disposed on the optical path of the light beam for converting the amount of transmitted light to an electric signal, wherein the photo-filter plate converts the rotational angle of the hammer assembly to the amount of light incident on the photo detecting element, and makes the photo radiating element and the photo detecting element stationary so that a suitable photo-shield case prevents the photo elements from environmental light.
摘要翻译：锤传感器包括可与锤组件一起移动的光过滤板，并且具有固定到锤柄的基板和形成在基板上且与基板不透明的弧形图案，辐射光的光辐射元件光束朝向弧形图案，以及光电检测元件，其设置在光束的光路上，用于将透射光量转换为电信号，其中，光电转换板将琴组件的旋转角度转换为光量入射到光电检测元件上，并使光辐射元件和光检测元件静止，使得合适的遮光罩防止光元件受到环境光的影响。

10. 发明授权

US06515213B2 Keyboard musical instrument for exactly producing tones and hammer sensor varying output signal exactly representing physical quantity of hammer 有权
公开(公告)号：US06515213B2
公开(公告)日：2003-02-04
申请号：US10002262
申请日：2001-11-14
申请人： Shigeru Muramatsu , Tsutomu Sasaki , Tadaharu Kato
发明人： Shigeru Muramatsu , Tsutomu Sasaki , Tadaharu Kato
IPC分类号： G10F102
CPC分类号： G10F1/02 , G01D5/34715 , G01D5/34776 , G10G3/04
摘要： A hammer sensor includes a photo-filter plate movable together with a hammer assembly and having a base plate fixed to the hammer shank and an arc pattern formed on the base plate and different in transparency from the base plate, a photo radiating element radiating a light beam toward the arc pattern and a photo detecting element disposed on the optical path of the light beam for converting the amount of transmitted light to an electric signal, wherein the photo-filter plate converts the rotational angle of the hammer assembly to the amount of light incident on the photo detecting element, and makes the photo radiating element and the photo detecting element stationary so that a suitable photo-shield case prevents the photo elements from environmental light.

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