METHOD FOR AUTOMATIC RESYNCHRONIZATION OF THE TRANSMITTER/RECEIVER PAIR IN A REMOTE KEYLESS ENTRY SYSTEM

摘要

Corrupted memory is detected during the communication sequence by generating a checksum of the authentication code at the initiation of the communication sequence and comparing it with a checksum previously stored. If the checksums do not match an automatic resynchronization sequence is begun in which random numbers are generated by the transmitter and broadcast to the receiver for subsequent use as rolling code or linear feedback shift register variables.