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1. 发明授权

US3982113A Acoustoelectric wave semiconductor signal processing apparatus with storage of weighting factor 失效
标题翻译：具有加权系数存储的声电波半导体信号处理装置
公开(公告)号：US3982113A
公开(公告)日：1976-09-21
申请号：US520924
申请日：1974-11-05
申请人： Larry Allen Coldren
发明人： Larry Allen Coldren
IPC分类号： G06G7/195 , G06G7/19 , H03H9/24
CPC分类号： G06G7/195
摘要： A pair of radio frequency (RF) input acoustic surface waves, of acoustic frequencies f.sub.1 and f.sub.2 traveling in opposite (.+-. z) directions, mutually nonlinearly interact acoustoelectronically along a layered structure of semiconductor-dielectric-electrode in which the dielectric layer includes a piezoelectric film. The dielectric layer advantageously contains a predetermined spatially varying pattern of trapped electrical charges, in accordance with a desired information storage pattern, along the z direction. The envelope of the RF voltage response across the structure is a functional representation (memory scan, convolution, correlation, or transform) of the information storage pattern, the type of functional relationship depending upon the envelopes of the RF input acoustic waves. In particular, if one RF input is a very narrow pulse while the other RF input is a continuous signal, then the output signal directly represents as a function of time the spatially varying pattern of trapped electrical charges (memory scan).
摘要翻译：在相反（+/- z）方向上行进的声频f1和f2的一对射频（RF）输入声表面波沿着电介质层包括的半导体 - 电介质电极的分层结构相互非电子地相互作用压电薄膜。电介质层有利地沿着z方向包含根据期望的信息存储模式的被捕获的电荷的预定的空间变化图案。跨结构的RF电压响应的包络是信息存储模式的功能表示（存储扫描，卷积，相关或变换），取决于RF输入声波的包络的功能关系的类型。特别地，如果一个RF输入是非常窄的脉冲而另一个RF输入是连续信号，则输出信号直接表示作为时间的空间变化的俘获电荷模式（存储器扫描）的函数。

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