发明名称 |
Subscriber loop interface circuitry with tracking battery supply |
摘要 |
A subscriber line interface apparatus includes a switching core generating a negative subscriber line battery supply voltage (V<SUB>BAT</SUB>) for supplying at least one of a tip line and a ring line of a subscriber line from a positive first supply voltage. The apparatus includes voltage control circuitry driving the switching core in accordance with a tracked signal corresponding to a sensed one of the tip and ring lines.
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申请公布号 |
US2005220293(A1) |
申请公布日期 |
2005.10.06 |
申请号 |
US20050088248 |
申请日期 |
2005.03.23 |
申请人 |
HEIN JERRELL P;GOLDENBERG MARIUS |
发明人 |
HEIN JERRELL P.;GOLDENBERG MARIUS |
分类号 |
H04M1/00;H04M19/00;(IPC1-7):H04M1/00 |
主分类号 |
H04M1/00 |
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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