| 发明名称 |
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| 摘要 |
<p>PURPOSE:To simplify the constitution of monitoring, by performing monitor with high accuracy and high reliability through taking the frequency transmitted as the reference frequency when the frequency information branching path is normal, and by inhibiting the monitor of spare oscillator in independent synchronizing condition so that useless alarm is not transmitted.</p> |
| 申请公布号 |
JPS6023558(B2) |
申请公布日期 |
1985.06.07 |
| 申请号 |
JP19770021840 |
申请日期 |
1977.02.28 |
| 申请人 |
FUJITSU KK;NIPPON DENSHIN DENWA KOSHA;NIPPON DENKI KK |
发明人 |
TSUDA HARUO;SHIRAKAWA HIDETOSHI;ICHIJO KOKICHI |
| 分类号 |
H03B1/00;H04L7/00;H04Q11/04 |
主分类号 |
H03B1/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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