| 摘要 |
<p>PURPOSE:To establish the synchronization in the ATDM system without fail by not changing the position of synchronization detection when number of times of synchronization pattern dissidence is a preset value or below. CONSTITUTION:When information to be sent does not exist, a synchronizing cell F is always sent and when the information to be sent exists, the information is split into small fixed length to form general information part D and at least an address part A is added and sent while being incorporated into the cell. When the synchronizing pattern detection position signal is inputted, it is collated with the synchronizing pattern and when they are coincident, the number of counted dissidence is reset to zero to hold the synchronizing pattern detection position. In case of dissidence, the number of dissidence is carried up by one and it is compared with a preset value. When the count is below the set value, the synchronizing detection position is kept and when the count is more than the set value, the synchronizing detection position is changed to other position. Thus, the synchronization of cell is established.</p> |
