| 发明名称 |
Line access apparatus for in-band communication |
| 摘要 |
A line access apparatus for in-band communication includes a line coupler that functions as a high voltage isolation device and has a resonant frequency out of the signal transmission band. A carrier signal of about the resonant frequency is modulated at an in-band frequency to convey information across the line coupler.
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| 申请公布号 |
US4750170(A) |
申请公布日期 |
1988.06.07 |
| 申请号 |
US19850799521 |
申请日期 |
1985.11.19 |
| 申请人 |
ALCATEL USA CORPORATION |
发明人 |
ZELLER, JR., DAVID A.;MIDDLETON, FRANCISCO A.;HARGRAVE, FRANKLIN |
| 分类号 |
H04M3/00;H04M3/18;H04M11/00;H04M11/06;H04Q1/14;H04Q1/18;H04Q3/42;(IPC1-7):H04J1/14 |
主分类号 |
H04M3/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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