发明名称 Telephone line interface circuit
摘要 <p>A hybrid circuit for communicating information over a telecommunications line is configured as a filter for filtering at the receiver input signals at predetermined frequencies appearing on the transmitter output and the telecommunications line. The circuit forms a capacitive divider for scaling signals appearing at the transmitter output and canceling the scaled signals at the receiver input with related signals appearing on the telecommunications line. For communicating using the ADSL protocol, the filter circuit may be a first order high pass filter.</p>
申请公布号 EP1089450(A2) 申请公布日期 2001.04.04
申请号 EP20000308181 申请日期 2000.09.20
申请人 STMICROELECTRONICS, INC. 发明人 VARELJIAN, ALBERT
分类号 H04M1/58;H04B1/52;H04B1/58;H04B3/03;H04M11/00;(IPC1-7):H04B1/58 主分类号 H04M1/58
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