发明名称 |
Subscriber line interface circuit |
摘要 |
The present invention describes a low power consumption type subscriber line interface circuit (SLIC). The SLIC described in the present invention includes a first pair of potential detectors each of which detects the potential difference between each corresponding subscriber line and a first predetermined value, a second pair of potential difference detectors each of which detects a potential difference between each corresponding subscriber line and a second predetermined value, a pair of signal adder circuits each of which sums output signals from one of the first potential difference detectors and one of the second potential difference detectors, and a pair of amplifiers each of which amplifies each output signal from each signal summing circuit and returns a direct current to the each of corresponding subscriber lines.
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申请公布号 |
US4852162(A) |
申请公布日期 |
1989.07.25 |
申请号 |
US19880178349 |
申请日期 |
1988.04.06 |
申请人 |
OKI ELECTRIC INDUSTRY CO., LTD. |
发明人 |
TAYA, TAKASHI;TAHARA, TOSHIYUKI |
分类号 |
H04M19/00 |
主分类号 |
H04M19/00 |
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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