Robert Boschgmbh

Frank Voetz

Florian Hartwich

Christian Horst

Tobias Lorenz

Ralf Machauer

A method and a device is provided to allow additional data to be transmitted between at least two users of a bus system. The transmitted data frames have a logic structure according to the CAN standard ISO 11898-1, and at least two additional short bits are inserted within a temporal bit length of at least some of the CAN bits such that at least for one of the two possible values of the current CAN bit, the first one of the additional bits inserted into this CAN bit is transmitted using a bus level that is the opposite of this value.

Method and device for a serial data transmission with additionally inserted data

In a method for enabling transmission of larger data quantities relatively rapidly in a data network, the sent data frames have a logical structure according to CAN Specification ISO 11898-1, the bit length in time within a data frame being able to assume at least two different values; for a first specifiable range within the data frame, the bit length in time being greater than, or equal to a specified minimum value of approximately one microsecond and in at least one second specifiable range within the data frame the bit length in time compared to the first range is at least halved, preferably less than halved; the change of the bit length in time being implemented by using at least two different scaling factors for setting the bus time unit relative to a shortest time unit or the oscillator clock pulse during running operation.

Growing community of inventors

Beilstein, Germany

Frank Voetz