METHOD FOR VERIFYING THE INTEGRITY OF DATA TRANSMISSION BETWEEN A MAIN UPSTREAM UNIT AND A MAIN DOWNSTREAM UNIT

摘要

The present invention relates to a method for verifying the integrity of data transmission between a main upstream unit (10a) and a main downstream unit (20a) the method being characterised in that it includes the implementation of the following steps: a data processing module (11a) of the main upstream unit (10a) generates a first frame (T1) including a packet (P1) of data to be transmitted and a cyclic redundancy code (E1) of said packet (P1); encapsulating the first frame (T1) in a second frame (T2) which also includes a cyclic redundancy code (C1) of the first frame (T1); encapsulating the cyclic redundancy code (E1) of the packet (P1) in a third frame (T3); the data processing module (11b) of the at least one auxiliary upstream unit (10b) compares each of the cyclic redundancy codes (E1) extracted from the first frame (T1) with those extracted from the third frame (T3); and confirming the integrity of data transmission to the main downstream unit (20a) only if the comparison is positive.