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Hitachi Ltd
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Hitachi Ltd
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Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP10582176ApriorityCriticalpatent/JPS5332068A/en
Publication of JPS5332068ApublicationCriticalpatent/JPS5332068A/en
PURPOSE: To detect the existence of abnormal signal in minute input signal and to eliminate the erroneous detection due to the influence of noises by forming collating signal from the detected signal itself.