专利名称：Emergency broadcasting
为戴茜小姐开车下载发明人：小町 淳，石田 悠馬
申请号：JP2019069680
申请日：20190401
公开号：JP2020170883A
公开日：
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20201015
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摘要：Problem to be solved: to improve the accuracy of determining the state of the emergency broadcasting line. An emergency broadcast apparatus 1 for generating a broadcast sound transmitted to a speaker 2 connected through a wiring L is compod ofA signal generator 162 for generating a plurality of test signals having a plurality of
natasha lyonne
penrynfrequencies usable for testing the state of wiring L andA variation amount specifying ction 167 for determining the amount of variation in electrical characteristics of the wiring l while applying a plurality of test signals to the wiring L isBad on multiple variations corresponding to multiple test signalsA lector 168 lects a frequency ud for testing from multiple frequenciesIn testing the state of wiring LA signal control unit 169 for applying a test signal of u frequency lected to the line L by the lector 168 and.Diagram
申请人：ニッタン株式会社
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地址：東京都渋谷区笹塚一丁目５４番５号
国籍：JP
卓有成效代理人：泉 通博，久恒 京範，寺川 賢祐
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