| 摘要 |
PURPOSE:To provide a light wiring system which can superimpose and transmit a clock signal or a control signal to a digital data signal by the simple circuit constitution. CONSTITUTION:At the time of light wirings 7-1 and 7-2 to perform the wiring between digital electronic circuits by light, a light emitting channel and a light receiving channel are respectively 2, the light emitting channel light-emitted by the value of an input digital data signal is switched, the data are modulated, and at each light emitting channel, a clock signal or a control signal is superimposed and transmitted to the modulated data signal. On the other hand, at the light receiving channel, by obtaining the sum of 2 signals (data signal and a clock signal or a control signal), and the clock signal or the control signal is demodulated or by obtaining the difference between 2 signals, the digital data signal is respectively demodulated. As this result, the bi-polar code transmission excellent in environment resistance can be realized, and the transmission of the clock signal or the control signal can be performed without providing a new wiring. |
