Patent ID: 11868293
Assignee: ROBERT BOSCH GMBH
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 0:
1. A device of a user station, which is one of a plurality of user stations of a serial bus system, comprising:
circuitry coupled to lines of a bus of the bus system, by which a signal is receivable from the bus of the bus system, the signal being based on a transmission signal via which a message is exchanged between the user stations of the bus system; and
a processor, wherein the processor is configured to:
in a first communication phase in which in the signal different values are provided by a recessive bus state and a dominant bus state, interpret the received signal using a first reception threshold; and
in a second communication phase in which in the signal different values are provided without the recessive bus state, interpret the received signal using a second reception threshold; and
responsive to a connection of the user station to the bus system being initiated after others of the user stations have been communicating via the bus system without recognition by the user station of which of the first and second communication phases is currently active on the bus system:
begin operation of the user station according to the second communication phase; and
switch operation of the user station from the second communication phase, in which the second reception threshold is used, into the first communication phase, in which the first reception threshold is used, upon detection of a level of the signal being above a third reception threshold for a predefined amount of time, the third reception threshold being different than the first and second thresholds.