| 摘要 |
PURPOSE:To enhance the utilization efficiency of a bus as a transmission line by constituting the system with a synchronization acquisition data outputted from a master station, a master station address, a slave station address being a communication opposite party address, a communication control data and a transmission line delay synchronization acquisition data outputted from a preceding slave station. CONSTITUTION:An AS field in the communication packet constitution is a synchronization acquisition data and a slave communication equipment applies sliding synchronization acquisition during the reception of the AS field, resulting that a PN code generating section 10 of the slave station is phase locked with a phase retarded by a delay in the transmission line with a PN code generating section 109 of the master station. The master station stops transmission immediately after the FCC field transmission to start sliding synchronization acquisition. The slave station outputs a DS field when the communication is correct as the result of error check by the FCC data. The DS field is a transmission line delay synchronization acquisition data. Thus, the sliding synchronization acquisition by the master station is finished within a period corresponding to a phase change in 2Xtd. |
