| 摘要 |
The regeneration circuit provides two signals, the first signal allowing detection of the periodic signal shortly before its theoretical position. The second signal is provided at a short interval after this theoretical position when the periodic signal has not been previously detected, for replacing the periodic signal. - It employs a counter (L) supplied from a clock source (CLX) with two outputs (X,Y) for the first and second signal respectively. These are coupled to respective setting inputs of a fli-flop (B1), its output (Q) coupled to the initialisation input of the counter.
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