| 摘要 |
PURPOSE:To attain time division exchange processing by applying time division transmission sequential control to information from a centralized plural optical memory means with a clock signal based on prescribed exchange information at a time division control means and outputting the result at each frame to an optical fiber cable at the output side thereby increasing the transfer speed. CONSTITUTION:Information from an optical fiber cable FB1 is received by a photodetector R, a synchronous detection section 1 extracts a synchronous timing out of the information, gives the result to a central control section 2, and optical memories MR1-MR2N are controlled selectively by the operation of an oscillator 3 and an optical memory selection control section 4 under the control of the section 2 to store the information. When the section 1 detects the end of one frame, it is informed to the section 2. The central control section 2 transfers information from the optical memories MR1-MRN of the '0' system to a time division control section 5 of the '0' system and transfers the information from the optical memories MRN+1-MR2N of the system '1' to a time division control section 6 of the system '1'. The sections 5, 6 decide the order of transmission in time division based on the exchange information and apply information transmission control to light emitting elements MS1-MS2N. |
