CLOCK RECOVERY CIRCUIT AND TIME AXIS ERROR CORRECTION DEVICE

摘要

PURPOSE:To provide the clock recovery circuit stable with no adjustment and the time axis error correction device immune to dropout and offering ease of digital interface-with respect to the clock recovery circuit from which a reproduced clock synchronously with a synchronizing signal having a time axis fluctuation is obtained. CONSTITUTION:A 0-th hold clock is counted by a counter 3 and a low-order address of a ROM 4 is driven by the count to obtain an internal synchronizing signal. Then a phase comparator circuit 2 compares the phase of an internal synchronizing signal with a phase of an external synchronizing signal and loads a phase difference data to a high-order address of a ROM 4, then a phase control signal is outputted according to a change in the count of the counter 3. Furthermore, a phase shift circuit 5 shifts a phase of a 0-th hold clock based on a phase control signal and a reproduced clock whose phase and frequency is coincident with that of an external synchronizing signal is obtained.