Patent ID: 7469005

Claim:
Method for synchronizing a transmitter memory area in a transmitter memory in a transmitter apparatus with a receiver memory area in a receiver memory in a receiver apparatus, where the transmitter memory area stores transmission data as transmission-data packets and the receiver memory area stores received data as received-data packets with associated error status data which respectively indicate an error status for the received-data packets, and where the method involves; the receiver apparatus generating a feedback message and transmitting it to the transmitter apparatus, with the feedback message containing a reference identification for a current reference received-data packet which the received-data packets include and which is used to locate the receiver memory area in the receiver memory; and the feedback message being processed in the transmitter apparatus by using the reference identification to identify among the transmission-data packets a reference transmission-data packet which corresponds to the current reference received-data packet and to update a location for the transmitter memory area in the transmitter memory taking into account the reference transmission-data packet; where, before the reference identification is generated in the receiver apparatus, the error status data from a number of the received-data packets are checked until a first received-data packet is ascertained for which the error status data indicate no error status, and an identification which identifies the first error-free received-data packet is used to ascertain an identification for the current reference received-data packet taking into account a predetermined formation rule for forming the identifications for the received-data packets, from which identification the reference identification for the current reference received-data packet is derived.