| 摘要 |
PURPOSE:To improve the transmitting efficiency of information, by connecting plural optical transmitters with the 1st optical transmission line for the picture information and the 2nd optical transmission line for the synchronizing reference signal. CONSTITUTION:Terminals A-D containing a reading part of original pictures, a recording part which works on the basis of the fed picture signal, a modulating/ demodulating function of aural signal, and a transmitting/receiving function of optical signal are connected in a loop with two optical transmission lines F1 and F2 to form an optical transmitter. The picture information and a command signal for transmission of the information are sent to the line F1; while a clock signal which secures synchronization between terminals A and B for transmission is sent to the line F2. At the same time, the audio signals of different directions of transmission are transmitted through these lines F1 and F2 after an FM modulation. These operations are carried out through a control panel provided to the terminals A-D respectively. Thus the efficiency is improved for transmission of information. |
