US Patent 7757021 Slave bus subscriber for a serial data bus

The invention relates to a slave bus subscriber for a serial data bus with a master bus subscriber, wherein the slave subscriber recognizes the bit rate of a data packet received over the data bus, whose header has a sync break field, a sync field and an ID field, with the help of the header of the data packet in such a manner that the periods between falling edges of bits having known bit intervals at least of the sync field and of the sync break field are evaluated and the bit rate is determined from the evaluated periods.