The clock obtaining practical circuit in approximately synchronization and clock circuit about symbol synchronization are designed ( realized one circuit ) ; the three controlling circuits with fast and low clock in code speed adjust technique are designed 在此基础上设计了基于scc准同步的一种时钟恢复实现电路和两种字符型起止式同步电路(实现了一种) 。设计了正码速调整技术中快慢时钟的三种控制电路。
