| 摘要 |
PROBLEM TO BE SOLVED: To provide a signal processing apparatus wherein no signal attenuation is caused even when a plurality of signal processing apparatuses each connected to a filter circuit are connected in parallel. SOLUTION: When a telephone 12a connected to a splitter 21a is hooked-on, connection ports S_P1, S_P2 of a splitter port 81 of a signal processing circuit 2a reach an interruption state, and the impedance of a connection circuit 18 gets higher to disconnect a LINE port 80 from a splitter port 81. The circuit 2a extracts a data signal from a signal received via a LINE port 80 and outputs the extracted signal to a MODEM port 82 through capacitors C1,C2. COPYRIGHT: (C)2004,JPO
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