| 摘要 |
PURPOSE:To attain acquisition of synchronism at an input with a few frames by adopting such as constitution of the circuit that the arrangement of a prescribed number of frame synchronizing bits differs in all parts as the frame synchronization bit. CONSTITUTION:A frame synchronizing bit inputted serially is fetched one by one bit according to a reference clock in a serial/parallel conversion section 11 and converted into a prescribed number of parallel signals while being shifted. Moreover, a parallel signal for a prescribed number of arrangement stored in advance is outputted by using the arrangement of the parallel signals of a prescribed number inputted from the said serial/parallel conversion section 11 as an address in a memory section 13. The said output is latched by a flip- flop circuit 14 and outputted according to a reference clock. The output from the said serial/parallel conversion section 11 or the flip-flop 14 is selected depending whether or not the synchronization is taken and inputted to the memory section 13 by the said operation. |
