| 摘要 |
PURPOSE: To realize a simpler method as a system extracting only required data among signals causing a high capacity such as image distribution or information service in the optical fiber data transmission system where high speed data are multiplexed and distributed. CONSTITUTION: In the high speed signal transmission system employing N-sets of time-division multiplex signals, a high speed signal from a high speed signal input terminal 11 is given to a variable frequency divider circuit comprising D flip-flop circuits 21 to 23 and OR circuits 25, 26, from which a frequency division clock is outputted and it is given to a clock terminal of D flip-flop 12, in which the clock is identified to extract a signal of one series in signals subject to N multiplex. Or a control signal of the variable frequency divider circuit is given from a synchronization instruction signal terminal 17 to chance the phase of the clock of the variable frequency divider circuit and an optional signal series among other signal series is selected. |
