| 摘要 |
PURPOSE:To regenerate an external data output clock from a reception signal of a data transmission channel by outputting a frame synchronizing signal, and regenerating a data output clock signal from the frame synchronizing signal. CONSTITUTION:Utilizing a ratio of a period of a frame synchronizing signal and a period of an external data outputting clock is constant in average, and only the phase of both the signals is asynchronous; the frame synchronizing signal S3 is multiplied and smoothed by a phase synchronizing circuit 8 to recover a data outputting clock CLK. Then a demodulated data series S7 is extracted of only information bit by a data conversion section 6 and outputted by a clock CLK as an external output data S0. Thus, the external data outputting clock regenerator is obtained with simple device constitution without deteriorating the utilizing rate of the frequency. |
