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1.发明公开Code generating method for spread spectrum communication 失效KodierzeugungsverfahrenfürSpreizspektrumübertragung。
公开(公告)号：EP0641109A2
公开(公告)日：1995-03-01
申请号：EP94401175.8
申请日：1994-05-27
发明人： Kanda, Tetsuo, c/o Canon Kabushiki Kaisha , Saito, Katsuo, c/o Canon Kabushiki Kaisha , Myojo, Toshihiko, c/o Canon Kabushiki Kaisha , Kato, Ichiro, c/o Canon Kabushiki Kaisha , Mochizuki, Norihiro, c/o Canon Kabushiki Kaisha , Nago, Hidetada, c/o Canon Kabushiki Kaisha
摘要： A diffusion code generating method for a code division multiplex communication by a spread spectrum system is provided. A receiving apparatus according to the above method receives the signal which was multiplexed by using a plurality of sets of diffusion codes and comprises: a generator to generate a sync code and a plurality of sets of diffusion codes other than the sync code; a correlator to obtain a correlation between a reception signal and the sync code generated from the generator; and a receiver to receive the reception signal on the basis of the plurality of sets of diffusion codes generated from the generator. The generator generates the sync code in a manner such that the cross-correlation values are set to very small values at positions near a code sync point or are enough smaller than the autocorrelation peak of the sync code or are set to very small values at both of or either one of the positions before and after the code sync point.
摘要翻译： 提供了一种扩频码生成方法，用于通过扩频系统进行码分复用通信。 根据上述方法的接收装置接收通过使用多组扩散码复用的信号，并且包括：生成器，用于生成除同步码之外的同步码和多组扩散码; 相关器，用于获得从发生器产生的接收信号和同步码之间的相关性; 以及接收器，用于基于从发电机产生的多组扩散码接收接收信号。 发生器以这样的方式产生同步码，使得互相关值在码同步点附近的位置被设置为非常小的值，或者足够小于同步码的自相关峰值，或者被设置为非常小的值 或者代码同步点之前和之后的位置之一。
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2.发明授权Surface acoustic wave device, and demodulation device and communication system using the same 失效与该表面声波装置的表面声波装置和通信系统解调器
公开(公告)号：EP0577089B1
公开(公告)日：1997-01-08
申请号：EP93110389.9
申请日：1993-06-29
IPC分类号： H03H9/64
CPC分类号： H03H9/14561 , H03H9/14547 , H03H9/6416 , H03H9/6486
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公开(公告)号：EP0641109A3
公开(公告)日：1995-03-15
申请号：EP94401175.8
申请日：1994-05-27
发明人： Kanda, Tetsuo, c/o Canon Kabushiki Kaisha , Saito, Katsuo, c/o Canon Kabushiki Kaisha , Myojo, Toshihiko, c/o Canon Kabushiki Kaisha , Kato, Ichiro, c/o Canon Kabushiki Kaisha , Mochizuki, Norihiro, c/o Canon Kabushiki Kaisha , Nago, Hidetada, c/o Canon Kabushiki Kaisha
摘要： A diffusion code generating method for a code division multiplex communication by a spread spectrum system is provided. A receiving apparatus according to the above method receives the signal which was multiplexed by using a plurality of sets of diffusion codes and comprises: a generator to generate a sync code and a plurality of sets of diffusion codes other than the sync code; a correlator to obtain a correlation between a reception signal and the sync code generated from the generator; and a receiver to receive the reception signal on the basis of the plurality of sets of diffusion codes generated from the generator. The generator generates the sync code in a manner such that the cross-correlation values are set to very small values at positions near a code sync point or are enough smaller than the autocorrelation peak of the sync code or are set to very small values at both of or either one of the positions before and after the code sync point.
摘要翻译： 提供了扩频系统的码分多路复用通信的扩散码生成方法。 根据上述方法的接收设备接收通过使用多组扩散码被多路复用的信号，并且包括：生成器，生成同步码和除了同步码以外的多组扩散码; 相关器，用于获得接收信号与从发生器产生的同步码之间的相关性; 以及接收器，用于基于从发生器产生的多组扩散码来接收接收信号。 发生器产生同步码的方式使得互相关值在码同步点附近的位置被设置为非常小的值，或者足够小于同步码的自相关峰值，或者在两者都被设置为非常小的值 代码同步点之前和之后的位置之一或任一位置。
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公开(公告)号：EP0641109B1
公开(公告)日：2002-12-18
申请号：EP94401175.8
申请日：1994-05-27
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5.发明公开Surface acoustic wave device, and demodulation device and communication system using the same 失效一种声表面波装置和通信系统解调器与该表面声波装置。
公开(公告)号：EP0577089A1
公开(公告)日：1994-01-05
申请号：EP93110389.9
申请日：1993-06-29
IPC分类号： H03H9/64
CPC分类号： H03H9/14561 , H03H9/14547 , H03H9/6416 , H03H9/6486
摘要： A surface acoustic wave device includes a piezoelectric substrate (11), an input electrode (12) formed on the substrate and an output electrode (13) formed on the substrate. A surface acoustic wave is generated from the input electrode to propagate in a predetermined direction in accordance with an input signal. In the output electrode, a plurality of taps (14₁...14 N ) are arranged in a propagation direction of the surface acoustic wave on the substrate. The surface acoustic wave is converted into an electrical signal by the output electrode. The taps of the output electrode are weighted so that signals output from the taps have substantially equal magnitudes.
摘要翻译： 一种表面声波器件包括压电基板（11），以形成在所述基材和形成于基材输出电极（13）的输入电极（12）。 一种表面声波从输入电极产生在预定方向上与输入信号传播在雅舞蹈。 在输出电极，抽头（141 ... 14N）的多元被布置在基板上的表面声波的传播方向。 表面声波被电极转换成电信号输出。 输出电极的抽头加权所以没有从抽头输出信号具有基本相等的幅值。
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