| 摘要 |
PURPOSE:To send plural sets of optical information by sending plural optical signals from plural optical signal transmission/reception terminal devices to one optical signal transmission terminal device sequentially in a different timing. CONSTITUTION:When each optical signal transmission/reception terminal device 2 of the subsequent order receives an optical signal S1 from an optical signal transmission/reception terminal 1 of a host processing unit, the transmission/ reception terminal device 2 placed at the leftmost end starts at first the own timer, the processing is finished in the transmission/reception terminal device 2 after a prescribed time and the specific information is sent to the transmission/ reception terminal device 1 as an optical signal. Further, the transmission/ reception terminal device 2 at the 2nd order from the left receives the optical signal S1 and completes the processing at the transmission/reception terminal device 2 after a prescribed time T2 to send the optical signal having the specific information to the transmission/reception terminal device 1. Similarly, the optical signal having the specific information is sent to the transmission/reception terminal device 1 with a delay sequentially by a prescribed time. |
