| 摘要 |
PURPOSE:To reduce the space by adding various kinds of signals in plural signal groups and sending the result optically. CONSTITUTION:A serial data signal, a bit clock and a word clock are outputted from a digital filter (LPF) and a muting signal and an emphasis signal are outputted from a system control circuit as DC signals. Each output is multiplexed by an optical transmission section 17 and sent to 3 systems of optical transmission lines. A data signal or a control signal is extracted through limiter amplifiers 23a-23c in an optical reception section 18 and a DC control signal is extracted via the LPF. |
