| 发明名称 |
METHOD & CIRCUIT FOR DETECTING NORMAL STATE OR ABNORMAL STATE OF TELETEXT SIGNAL |
| 摘要 |
synchronizing the frequency of a TTX signal into a fixed frequency(12KHz or 16KHz); detecting the amplitude of the TTX signal frequency; and judging that the TTX signal is normal when the TTX signal is synchronized with the fixed frequency and the amplitude of the TTX signal is normal.
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| 申请公布号 |
KR960013698(B1) |
申请公布日期 |
1996.10.10 |
| 申请号 |
KR19930026258 |
申请日期 |
1993.12.02 |
| 申请人 |
DAEWOO TELECOM CO.,LTD. |
发明人 |
LEE, KANG-YONG |
| 分类号 |
H04M15/00;(IPC1-7):H04M15/00 |
主分类号 |
H04M15/00 |
| 代理机构 |
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