INHIBITING CIRCUIT FOR TELEPHONE CALL

更新时间:2023-07-26 04:24:33 阅读: 评论:0

暧昧的英文专利名称:INHIBITING CIRCUIT FOR TELEPHONE CALL 申请号:JP665883
朝霞的诗句乡村女医生申请日:19830120
公开号:JPS6336689Y2
公开日:
老虎用英语怎么说
补药有哪些
19880928
红烧鸡蛋专利内容由知识产权出版社提供
威尼斯海滩
摘要:PURPOSE:To prevent automatically the u of a telephone with no agreement of the telephone owner by inhibiting the calling when a binary code corresponding to the inhibiting dial number is supplied. CONSTITUTION:The dial pul of a telephone 10 is detected 24 and converted 130 into a binary code, and an inhibition signal is generated 120 to inhibit the calling when the binary code corresponding to an inhibited dial number is supplied. At the same time, a control signal is produced 110 for a prescribed period to enable the calling when the binary code corresponding to a specific dial number is supplied. Then the inhibition signal is prevented by a gate 138 in respon to said control signal. At the same time, a telephone line is cut off by a switch 144 in respon to the inhibition signal which pasd through the gate 138.
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