| 发明名称 |
SHUNTTTYPE CURRENT SWITCH SCANNING SYSTEM |
| 摘要 |
PURPOSE:To reduce the DC signal current flowing to the scanner side at the offhook time by blocking the AC induction vertical voltage in the case of the on-hook through insertion of the diode in series to the shunt resistance. |
| 申请公布号 |
JPS5432005(A) |
申请公布日期 |
1979.03.09 |
| 申请号 |
JP19770097883 |
申请日期 |
1977.08.17 |
| 申请人 |
HITACHI LTD;NIPPON TELEGRAPH & TELEPHONE;OKI ELECTRIC IND CO LTD;NIPPON ELECTRIC CO;FUJITSU LTD |
发明人 |
SUZUKI TOSHIAKI;UENO TAKAO;SAITOU JINKOU;ASAKURA JIYUNJI;MIYAKE YASUSHI |
| 分类号 |
H04Q3/72;H04Q3/00 |
主分类号 |
H04Q3/72 |
| 代理机构 |
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代理人 |
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| 地址 |
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