Abstract

A new approach to organizing testing of combinational devices is described; the approach implies initial compression of signals from working outputs of the test object to the binary four-digit vector and its subsequent transformation to the code word of the constant-weight “1-out-of-4” code. This approach allows reducing the complexity of technical implementation of the test circuit by decreasing the number of checked functions in the compression circuit. The number of testing organization variants of combinational devices is rather large, because it is possible to choose the compressed functions and the techniques for transforming each data vector to the code word of the “1-out-of-4” code. The paper shows that the new approach to organizing self-checking combinational devices allows improving the characteristics of distortion detection in data vectors in comparison with the traditional approach to organizing testing of devices by parity, even without special circuit analysis methods.

中文翻译：

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基于对信号进行压缩的恒重“四分之一”代码的布尔补码的组合设备测试组织

摘要

描述了一种组织组合设备测试的新方法。该方法意味着对从测试对象的工作输出到二进制四位矢量的信号进行初始压缩，然后将其转换为恒重“四分之一”代码的代码字。该方法允许通过减少压缩电路中被检查功能的数量来降低测试电路的技术实施的复杂性。组合设备的测试组织变体的数量非常大，因为可以选择压缩功能和用于将每个数据向量转换为“ 4分之一”代码的代码字的技术。