公开(公告)号：US5499267A

公开(公告)日：1996-03-12

申请号：US145031

申请日：1993-10-29

申请人： Ichirou Ohe ,  Yutaka Nakamura ,  Norihiro Suzuki

发明人： Ichirou Ohe ,  Yutaka Nakamura ,  Norihiro Suzuki

IPC分类号： H04J13/00 ,  H04B1/707 ,  H04B1/7087 ,  H04B1/69

CPC分类号： H04B1/707

摘要： A spread spectrum communication system includes a receiving section which receives a signal produced by modulating a carrier of a predetermined frequency with a spread spectrum signal which has been modulated with a spread code of a clock frequency fC and mixes the received signal with a local oscillation signal to provide a spread spectrum signal component wherein a local oscillation frequency fL of said local oscillation signal is set at fL.apprxeq.fC+fo or fL>fC+fo or fL.apprxeq.fo-fC or fL

摘要翻译： 扩展频谱通信系统包括接收部分，其接收由已经用时钟频率fC的扩频码调制的扩展频谱信号调制预定频率的载波产生的信号，并将接收的信号与本地振荡信号混合 以提供扩展频谱信号分量，其中所述本地振荡信号的本地振荡频率fL被设置为fL APPROX fC + fo或fL> fC + fo或fL APPROX fo-fC或fL

公开(公告)号：US5200562A

公开(公告)日：1993-04-06

申请号：US781727

申请日：1991-10-23

申请人： Makoto Kaneko ,  Ichirou Ohe

发明人： Makoto Kaneko ,  Ichirou Ohe

IPC分类号： G10G3/04

CPC分类号： G10G3/04 ,  Y10S84/07

摘要： A key position computing apparatus for a player piano is presented which includes the following components (a) sensing device provided on each key and adapted for measuring a distance between a reference plane and a key surface for each key, (b) memory device for storing computer programs to compute the relationship between the output from the sensing device and the distance between the reference plane and the key surface, (c) programmable memory device for storing the characteristic operating data of the sensing device for each key, (d) computing device for computing the relationship between the output from the sensing device and the distance from the reference plane to the surface of each key, (e) gain adjusting device for adjusting the gain of the output from the sensing device to a constant value, and (f) linearizing device for approximating the output of the sensing device by a linearized signal. The player piano, so equipped and operated according to the steps, produces continual monitoring and real time dynamic reproduction of a musical performance.

摘要翻译： 提供一种用于演奏者钢琴的按键位置计算装置，其包括以下组件（a）设置在每个键上的适于测量每个键的参考平面和键表面之间的距离的感测装置，（b）存储装置 用于计算来自感测装置的输出与参考平面与键表面之间的距离的关系的计算机程序，（c）用于存储每个键的感测装置的特征操作数据的可编程存储装置，（d）计算装置 用于计算来自感测装置的输出与从参考平面到每个键的表面的距离之间的关系;（e）增益调节装置，用于将从感测装置的输出的增益调节到恒定值，以及（f ）线性化装置，用于通过线性化信号近似感测装置的输出。 按照步骤配备和操作的演奏者钢琴，可以持续监视和演绎乐曲的实时动态再现。