| 摘要 |
PURPOSE:To adjust always optimumly and automatically the identifying level of an input signal and to obtain a satisfactory synchronizing clock signal by integrating a identifying level correcting signal fed from the code deciding device and providing an accumulating part to adjust the identifying level. CONSTITUTION:At a conventional synchronizing clock reproducing device, a code deciding device 11 and an accumulating part 15 are provided. In the deciding device 11, it is decided whether the zero cross point of the input signal is generated by the rise or by the fall, then, the phase error signal code is decided and the identifying level correcting signal is outputted. The correcting signal, in the accumulating part 14, is accumulated, attenuated and made into the identifying off-set signal, the signal is changed, and the identifying level is always optimumly kept. For such a reason, the satisfactory synchronizing clock signal can be obtained. |
