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1. 发明授权

US07078611B2 Keyboard instrument 有权
标题翻译：键盘乐器
公开(公告)号：US07078611B2
公开(公告)日：2006-07-18
申请号：US11036684
申请日：2005-01-14
申请人： Ryuichi Izumi , Kei Kunisada , Takashi Fujita
发明人： Ryuichi Izumi , Kei Kunisada , Takashi Fujita
IPC分类号： G10H1/32 , G10H3/00
CPC分类号： G10H1/32 , Y10S84/17
摘要： An instrument main body has a keyboard including a plurality of keys and sound generators (for example, speakers) at a rear of the keyboard. At the rear of the keyboard, an upper surface cover portion composed of an upper panel, a operating panel, and so on is provided to cover an upper portion of the instrument main body. In the operating panel, tone escape portions are provided at right and left regions separated in a direction in which the keys of the instrument main body are arranged. Further, a rear panel is erected on the upper panel at a rear of the tone escape portions and having a width equal to or larger than the entire width of the keyboard in the direction in which the keys are arranged and a height larger than the length of the key in its longitudinal direction.
摘要翻译：仪器主体具有键盘，该键盘包括在键盘后部的多个键和声音发生器（例如扬声器）。在键盘的后部，设置由上面板，操作面板等构成的上表面盖部，以覆盖仪器主体的上部。在操作面板中，在沿着仪器主体的键配置的方向分开的左右区域设置色调排出部。此外，后面板在色调排出部分的后部竖立在上面板上，并且具有等于或大于键盘的排列方向上的键盘的整个宽度的宽度，并且高度大于长度的关键在其纵向方向。

2. 发明申请

US20050150368A1 Keyboard instrument 有权
标题翻译：键盘乐器
公开(公告)号：US20050150368A1
公开(公告)日：2005-07-14
申请号：US11036684
申请日：2005-01-14
申请人： Ryuichi Izumi , Kei Kunisada , Takashi Fujita
发明人： Ryuichi Izumi , Kei Kunisada , Takashi Fujita
IPC分类号： G01B3/00 , G10G5/00 , G10H1/32 , G10H3/00
CPC分类号： G10H1/32 , Y10S84/17
摘要： An instrument main body has a keyboard including a plurality of keys and sound generators (for example, speakers) at a rear of the keyboard. At the rear of the keyboard, an upper surface cover portion composed of an upper panel, a operating panel, and so on is provided to cover an upper portion of the instrument main body. In the operating panel, tone escape portions are provided at right and left regions separated in a direction in which the keys of the instrument main body are arranged. Further, a rear panel is erected on the upper panel at a rear of the tone escape portions and having a width equal to or larger than the entire width of the keyboard in the direction in which the keys are arranged and a height larger than the length of the key in its longitudinal direction.
摘要翻译：仪器主体具有键盘，该键盘包括在键盘后部的多个键和声音发生器（例如扬声器）。在键盘的后部，设置由上面板，操作面板等构成的上表面盖部，以覆盖仪器主体的上部。在操作面板中，在沿着仪器主体的键配置的方向分开的左右区域设置色调排出部。此外，后面板在色调排出部分的后部竖立在上面板上，并且具有等于或大于键盘的排列方向上的键盘的整个宽度的宽度，并且高度大于长度的关键在其纵向方向。

3. 发明授权

US07432428B2 Electronic keyboard musical instrument 有权
标题翻译：电子键盘乐器
公开(公告)号：US07432428B2
公开(公告)日：2008-10-07
申请号：US11488565
申请日：2006-07-18
申请人： Kei Kunisada , Takashi Kato , Takashi Fujita
发明人： Kei Kunisada , Takashi Kato , Takashi Fujita
IPC分类号： G10H1/00
CPC分类号： G10H1/348 , G10C1/00 , G10C3/06 , G10H7/006 , G10H2210/271 , G10H2230/045 , G10H2250/041 , G10H2250/451
摘要： An electronic keyboard musical instrument capable of performing delicate sound board vibration control based on outputs generated individually for respective ones of transducers, thereby realizing production of natural sounds with sufficient volume, and an easy tone quality adjustment. A sound board is fixed to a frame, and the transducers are mounted to the sound board so as to be spaced from one another. In accordance with first and second performance signals generated in response to a key operation of a keyboard and a damper pedal operation, driving signals for the transducers are individually generated in consideration of characteristics and mounting positions of the transducers, and the driving signals are supplied to the transducers. The sound board is thereby caused to vibrate at a frequency varying according to a tone pitch, thus producing a musical tone and/or a damper tone.
摘要翻译：一种电子键盘乐器，其能够基于对于各个换能器单独产生的输出进行精细的声音板振动控制，从而实现具有足够音量的自然声音的产生和简单的音质调整。声板被固定在框架上，并且换能器被安装到声板以便彼此间隔开。根据响应于键盘的键操作和制音踏板操作产生的第一和第二性能信号，考虑到换能器的特性和安装位置，分别产生用于换能器的驱动信号，并将驱动信号提供给传感器。由此，声音板以根据音调变化的频率振动，从而产生乐音和/或减震音。

4. 发明申请

US20070017353A1 Electronic keyboard musical instrument 有权
标题翻译：电子键盘乐器
公开(公告)号：US20070017353A1
公开(公告)日：2007-01-25
申请号：US11488565
申请日：2006-07-18
申请人： Kei Kunisada , Takashi Kato , Takashi Fujita
发明人： Kei Kunisada , Takashi Kato , Takashi Fujita
IPC分类号： G10H3/00
CPC分类号： G10H1/348 , G10C1/00 , G10C3/06 , G10H7/006 , G10H2210/271 , G10H2230/045 , G10H2250/041 , G10H2250/451
摘要： An electronic keyboard musical instrument capable of performing delicate sound board vibration control based on outputs generated individually for respective ones of transducers, thereby realizing production of natural sounds with sufficient volume, and an easy tone quality adjustment. A sound board is fixed to a frame, and the transducers are mounted to the sound board so as to be spaced from one another. In accordance with first and second performance signals generated in response to a key operation of a keyboard and a damper pedal operation, driving signals for the transducers are individually generated in consideration of characteristics and mounting positions of the transducers, and the driving signals are supplied to the transducers. The sound board is thereby caused to vibrate at a frequency varying according to a tone pitch, thus producing a musical tone and/or a damper tone.
摘要翻译：一种电子键盘乐器，其能够基于对于各个换能器单独产生的输出进行精细的声音板振动控制，从而实现具有足够音量的自然声音的产生和简单的音质调整。声板被固定在框架上，并且换能器被安装到声板以便彼此间隔开。根据响应于键盘的键操作和制音踏板操作产生的第一和第二性能信号，考虑到换能器的特性和安装位置，分别产生用于换能器的驱动信号，并将驱动信号提供给传感器。由此，声音板以根据音调变化的频率振动，从而产生乐音和/或减震音。

5. 发明授权

US06392136B1 Musical tone generation structure of electronic musical instrument 有权
公开(公告)号：US06392136B1
公开(公告)日：2002-05-21
申请号：US09884281
申请日：2001-06-19
申请人： Masao Kondo , Hiromi Hikida , Kei Kunisada
发明人： Masao Kondo , Hiromi Hikida , Kei Kunisada
IPC分类号： G10H132
摘要： An electronic musical instrument such as an electronic piano has a musical tone generation structure that closely simulates and reproduces musical tones with nuances of musical expressions with fidelity to acoustic musical instruments such as acoustic pianos. In the casing of the electronic piano, speakers are attached to a speaker attachment plate, which is placed substantially horizontal, such that front sides of the speakers are directed upwards. The sounds radiated from the front sides of the speakers are reflected by a reflector board which is hinged to close or open at a prescribed angle of inclination with respect to a top board, so that reflected sounds are transmitted towards the audience. Enclosures are provided inside of the casing below the speaker attachment plate and contain mufflers having a relatively small thickness therein. Through holes whose openings are directed downwards are formed to penetrate through a bottom plate of the enclosures, wherein the total area of openings of the through holes is larger than the total area of the speakers. Sounds radiated from the backsides of the speakers propagate through the enclosures and are transmitted towards the floor via the through holes, so that reflected sounds are transmitted towards the audience through the air. Further, the electronic piano as a whole vibrates in response to vibrations caused by the speakers. Thus, the electronic piano produces mixed sounds that reproduce acoustic musical tones having the nuances of musical expression of an acoustic piano.

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