| 摘要 |
PURPOSE:To shorten considerably the time required for clock reproducing, by utilizing clocks, which are reproduced from the first burst signal, as the sampling signal of the succeeding burst signal. CONSTITUTION:The phase difference between clock signal A, which is extracted from the burst signal, and signal B of oscillator 3 is detected by phase comparator 21. An average value of the phase difference during a fixed time is obtained by averaging circuit 4 and is given to memory circuit 6. Though subscribers perform transmission successively in time division in the TDMA system, phase difference information obtained from burst signals are stored in memory circuit 6 for every subscriber, and the clock corresponding to the burst signal transmitted from each subscriber can be obtained immediately on the basis of phase difference information in memory circuit 6. |
