| 发明名称 |
MULTIISTEPPED DRIVING SYSTEM FOR CUMULATIVE SELECTION TYPE SWITCH MATRIX |
| 摘要 |
PURPOSE:To decrease the driving wire between the switch steps and the number of the current path controlling diode, by using the contact of each switch selection circuit for selection of the row driving winding of the front-step switch matrix or the rear-step line driving winding. |
| 申请公布号 |
JPS53131714(A) |
申请公布日期 |
1978.11.16 |
| 申请号 |
JP19770046558 |
申请日期 |
1977.04.22 |
| 申请人 |
NIPPON TELEGRAPH & TELEPHONE;NIPPON ELECTRIC CO;HITACHI LTD;OKI ELECTRIC IND CO LTD;FUJITSU LTD |
发明人 |
ENDOU YUUJI;MINATO ATSUSHI;KOMATSU AYAFUMI;MIYAMOTO KOUICHI;YAJIMA SHIYOUICHI |
| 分类号 |
H04Q3/64;H04Q3/68;(IPC1-7):04Q3/68 |
主分类号 |
H04Q3/64 |
| 代理机构 |
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代理人 |
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