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    • 1. 发明授权
    • Key structure
    • 关键结构
    • US07394004B2
    • 2008-07-01
    • US11378479
    • 2006-03-20
    • Shigeru MuramatsuToshiro Sakai
    • Shigeru MuramatsuToshiro Sakai
    • G10C1/00
    • B29C45/16B29C45/1671B29L2031/722B29L2031/758B44F9/06G10C3/125
    • A key structure includes a top plate which is formed by laminating a half-transparent resin surface layer member on a resin bottom side member using two-color injection molding, and the top plate is secured on a wooden key base. A plurality of concave grooves and protrusions, and a plurality of protrusion and troughs are respectively formed together in straight lines in the long direction of the key structure on a rear face of the surface layer member and a top face of the rear side member. Outside light is reflected from the top ends of the protrusion and the troughs, whereby a faint and natural vertically-striped pattern, which corresponds to a concave-convex part formed by the concave grooves and the protrusions, is perceived as resembling an edge grain of ivory.
    • 关键结构包括通过使用双色注射成型将半透明树脂表面层构件层压在树脂底侧构件上而形成的顶板,并且顶板固定在木质键座上。 多个凹槽和突起以及多个突起和槽分别沿着表面层构件的后表面上的键结构的长方向的直线和后侧构件的顶面一起形成在一起。 外部的光从突起和谷的顶端反射,由凹槽和突起形成的凹凸部对应的微弱自然的垂直条状图案被认为类似于边缘颗粒 象牙。
    • 4. 发明申请
    • Key structure
    • 关键结构
    • US20060254892A1
    • 2006-11-16
    • US11378479
    • 2006-03-20
    • Shigeru MuramatsuToshiro Sakai
    • Shigeru MuramatsuToshiro Sakai
    • H01H9/00
    • B29C45/16B29C45/1671B29L2031/722B29L2031/758B44F9/06G10C3/125
    • A key structure includes a top plate which is formed by laminating a half-transparent resin surface layer member on a resin bottom side member using two-color injection molding, and the top plate is secured on a wooden key base. A plurality of concave grooves and protrusions, and a plurality of protrusion and troughs are respectively formed together in straight lines in the long direction of the key structure on a rear face of the surface layer member and a top face of the rear side member. Outside light is reflected from the top ends of the protrusion and the troughs, whereby a faint and natural vertically-striped pattern, which corresponds to a concave-convex part formed by the concave grooves and the protrusions, is perceived as resembling an edge grain of ivory.
    • 关键结构包括通过使用双色注射成型将半透明树脂表面层构件层压在树脂底侧构件上而形成的顶板,并且顶板固定在木质键座上。 多个凹槽和突起以及多个突起和槽分别沿着表面层构件的后表面上的键结构的长方向的直线和后侧构件的顶面一起形成在一起。 外部的光从突起和谷的顶端反射,由凹槽和突起形成的凹凸部对应的微弱自然的垂直条状图案被认为类似于边缘颗粒 象牙。
    • 7. 发明授权
    • Self-calibrating transducer system and musical instrument equipped with the same
    • 自校准换能器系统及配备的乐器
    • US07411124B2
    • 2008-08-12
    • US11293573
    • 2005-12-02
    • Shigeru Muramatsu
    • Shigeru Muramatsu
    • G10H1/00
    • G10F1/02G01D18/006G01D18/008
    • A self-calibrating key sensor system is constituted by an optical modulator, optical position transducers, a data accumulator and a data analyzer, and the optical modulator has a gray scale section to produce a key position signal varied together with the keystroke and an absolute data section to produce a calibration signal representative of a strictly adjusted distance between transparent areas of the absolute data section; the data accumulator accumulates discrete values of the calibration signal and discrete values of the key position signal together with the sampling time, and the data analyzer determines the gradient of the key position signal on the basis of peaks of the calibration signal produced at both ends of the strictly adjusted distance so as to estimate the true distance between the rest and end positions.
    • 自校准密钥传感器系统由光调制器,光学位置传感器,数据累加器和数据分析器构成,并且光调制器具有灰度部分以产生与击键一起变化的键位置信号和绝对数据 以产生表示绝对数据部分的透明区域之间严格调整的距离的校准信号; 数据累加器累积校准信号的离散值和键位置信号的离散值以及采样时间,并且数据分析器基于在两端产生的校准信号的峰值来确定键位置信号的梯度 严格调整距离,以便估计休息和结束位置之间的真实距离。