发明名称
摘要 PURPOSE:A delta circuit is used to utilize talking functions sufficiently even under the enviromental condition of intrusive noises, so that a simple circuit constitution can reduce its cost and obtain the high reliability.
申请公布号 JPS5745386(B2) 申请公布日期 1982.09.27
申请号 JP19760117544 申请日期 1976.09.30
申请人 发明人
分类号 H04M1/60;H04M9/10 主分类号 H04M1/60
代理机构 代理人
主权项
地址