| 摘要 |
PURPOSE:To continue miniaturization by using one transmission to interconnect an operating section and a control section and superimposing a 2-way transmission signal onto a signal on a transmission line. CONSTITUTION:In a digital audio equipment in which a digital signal is sent in a direction through a transmission line between an operating section 1 and a control section 2 and 1st and 2nd control signals are sent in 2-way through other transmission line, the operating section 1 and the control section 2 are interconnected by an optical transmission line 5, and a half mirror 14 (24) is arranged to an end of the optical transmission line 5 connecting respectively to the operating section 1 (control section 2), and the half mirrors 14, 24 are used to transmit or reflect a reception optical signal and a transmission optical signal respectively thereby separating or combining the signals, and a 1st optical signal corresponding to the digital signal and 2nd and 3rd optical signals corresponding to the 1st and 2nd control signals are sent through the optical transmission line 5 in time division. |
