| 摘要 |
<p>PURPOSE:To establish synchronization of frames easily and surely with a simple constitution to make it possible to cope with frame bit errors after synchronization establishment, by obtaining the next synchronizing state information by the frame bit for every prescribed number of bits. CONSTITUTION:N-bit register 12 which shifts M-bit frame data from receiver 11 according to the clock signal bit by bit, ROM13 where various information indicating synchronizing states of frame bits are stored in respective address positions previously and data held in a prescribed bit position of register 12 is a part of the address, and circuits 14-19 which hold the read output of ROM13 and transmit the reset address for ROM13 at a prescribed timing are provided. On the basis of information indicating the synchronizing state of the frame bit and data held in the prescribed bit position of register 12, information indicating the next synchronizing state is obtained.</p> |
