Abstract: A user station for a serial bus system. The user station includes a communication control device for controlling a communication of the user station with at least one other user station, and a transceiver device to serially transmit a transmission signal, generated by the communication control device, onto a bus, and serially receive signals from the bus. The communication control device generates the transmission signal according to a frame and inserts into the frame two check sums that include different bits of the frame in the computation. The communication control device inserts dynamic stuff bits into the frame in such a way that an inverse stuff bit is inserted into the bit stream of the frame after 5 identical bits in succession. The communication control device computes the two check sums so that a maximum of one of the two check sums includes the dynamic stuff bits in the computation.

Abstract: A user station for a serial bus system. The user station includes a communication control device for controlling a communication of the user station with at least one other user station, and a transceiver device to serially transmit a transmission signal generated by the communication control device onto a bus and to serially receive signals from the bus. The communication control device generates the transmission signal according to a frame, and inserts a header check sum into the frame, only bits of a frame header that is situated in front of a data field provided for useful data in the frame being included in the computation. For computing the header check sum, the communication control device uses a predetermined starting value and a predetermined check sum polynomial.

Abstract: A user station for a serial bus system. The user station includes a communication control device for controlling a communication of the user station with another user station, and a transceiver device for transmitting a transmission signal, generated by the communication control device, onto a bus, so that for a message that is exchanged between user stations of the bus system, the bit time of a signal transmitted in the first communication phase is different from a bit time of a signal transmitted in the second communication phase. The communication control device generates the transmission signal according to a frame in which fields for a header check sum and a frame check sum. The communication control device computes the header check sum from all bits in the header of a frame that is formed for the message, except for fixed stuff bits that have been inserted into the header.

Abstract: A user station for a serial bus system and a method for communication in a serial bus system. The user station includes an application for carrying out a task, a transceiver unit for serially receiving a message in the form of a frame from a bus of the bus system, via which user stations of the bus system exchange messages with one another, and a filter module for filtering the received frame. The filter module for filtering is designed to check at least two segments of the frame separately to determine whether or not the received frame is to be passed on to the application.

Abstract: A user station for a serial bus system and a method for error signaling for a message received in a serial bus system are provided. The user station includes a communication control unit for creating a message to be transmitted serially to at least one further user station of the bus system, or for reading a message, received serially from at least one further user station, and a transceiver device for transmitting the created message on a bus line or for receiving a message from the bus line, the communication control unit and/or the transceiver device provide an ACK time window for an ACK signal and/or a NACK time window for a NACK signal in the message to be transmitted for a signaling of whether or not at least one further user station has identified an error in the transmitted message.

Abstract: A device and method for a serial bus system. The device has a transmit signal analysis module for counting edges of a transmit signal to be transmitted on a bus of the bus system; a receive signal analysis module for counting edges of a receive signal generated from a signal transmitted on the bus because of the transmit signal; and an evaluation module for evaluating the difference that results from a comparison of the edges counted by the transmit signal analysis module and the edges counted by the receive signal analysis module. If the signal propagation time on the bus is greater than the bit time of the receive signal, the evaluation module signals whether the amount of the difference is less than or equal to a predefined value or whether the amount of the difference is greater than the predefined value, the predefined value being greater than zero.

Abstract: A transceiver device for a user station of a serial bus system, a communication control device, and a method. The transceiver device includes a first terminal for receiving a transmission signal from a communication control device, a transmission module for transmitting the transmission signal onto a bus of the bus system, a reception module for receiving the signal from the bus, the reception module being designed to generate a digital reception signal from the signal received from the bus, a second terminal for sending the digital reception signal to the communication control device and for receiving an operating mode changeover signal from the communication control device, and a changeover feedback block for outputting feedback regarding a changeover of the operating mode that has taken place as a result of the operating mode changeover signal.

Abstract: A device for a serial bus system. The device includes a reception block for receiving a signal from a bus of the bus system. The signal is based on a transmission signal via which a message is exchanged between user stations. The reception block receives, in a first communication phase, the signal using a first reception threshold, and in a second communication phase, receives the signal using a second reception threshold. The device includes an evaluation block for evaluating the signal from the bus using a switchover reception threshold that differs from the first and second reception thresholds, and a reception threshold switching block for the time-limited switchover of the reception threshold of the reception block from the first reception threshold to the second reception threshold when the evaluation block detects the bus level for data of the transmission signal, using the switchover reception threshold in the signal.

Abstract: A communication control device for a subscriber station of a serial bus system. The communication control device has a communication control module for generating a transmitted signal for controlling a communication of the subscriber station with at least one other subscriber station of the bus system, in which bus system at least a first communication phase and a second communication phase are used for exchanging messages between subscriber stations of the bus system, a first terminal for transmitting, in an operating mode of the first communication phase, the transmitted signal to a transmitting/receiving device, a second terminal for receiving, in the operating mode of the first communication phase, a digital received signal from the transmitting/receiving device, and an operating mode switching module for switching the transmission direction of the first and the second terminal in the second communication phase to the same direction for differential signal transmission.

Abstract: A subscriber station for a serial bus system. The subscriber station has a communication control device for controlling a communication of the subscriber station with at least one other subscriber station of the bus system, a transmitting/receiving device for transmitting a transmission signal in a frame on a bus of the bus system, and a scheduling unit for scheduling a temporal access of the subscriber station to the bus in at least one time slot of a cycle of temporally consecutive time slots, at least one time slot being provided in a cycle for each subscriber station for transmitting its transmission signal and the cycle repeating cyclically. The scheduling unit is designed to determine an assignment that specifies which time slot of the cycle the transmitting/receiving device is allowed to use for transmitting the frame for the transmission signal on the bus.

Abstract: A user station is described. The user station includes a communication control device for transmitting and/or receiving messages to/from a bus of a serial bus system, a format switchover checking unit for checking whether the communication control devices of the bus system have switched over the format of the messages from a first format in a first communication phase to a second format for a second communication phase, and a transceiver device which, for transmitting in the first format, generates a first bus state for a first digital data state of the messages and a second bus state for the second digital data state of the messages so that the second bus state can overwrite the first bus state. The transceiver device, for transmitting in the second format, generates different bus states so that the bus states for the different digital data states of the messages cannot overwrite one another.

Abstract: A user station for a bus system and a method for transmitting a message at different bit rates in a bus system. The user station includes a communication control unit for creating a message for a further user station of the bus system. The communication control unit provides, in the message, a first phase, which is to be transmitted at a first bit rate, and to provide a second phase, which is to be transmitted at a second bit rate, which is faster than the first bit rate. The communication control unit is designed to provide in the message a first predetermined bit pattern for a bit rate switching between the first and second bit rate and to provide a second predetermined bit pattern for a bit rate switching between the second and first bit rate. The second predetermined pattern differs from all other bit patterns in a valid message.

Abstract: A subscriber station for a serial bus system and a method for communication. The subscriber station has a communication control device controlling a communication of the subscriber station with at least one other subscriber station of the bus system and generating a transmit signal. The communication control device generates the transmit signal according to a frame and to insert a field having a rising edge and a subsequent falling edge into the frame for the transition from a first communication phase to a second communication phase. The field has a predetermined length between the rising edge and the subsequent falling edge such that a sampling time at which a communication control device of the at least one other subscriber station of the bus system will sample the first bit of the second communication phase is situated between the rising edge and the subsequent falling edge.

Abstract: A subscriber station for a serial bus system. The subscriber station has a communication control device for controlling a communication of the subscriber station with at least one other subscriber station, a transmitting/receiving device for transmitting a transmission signal generated by the communication control device, and a scheduling unit for scheduling a temporal access of the subscriber station to the bus in at least one time slot of a cycle of temporally consecutive time slots. At least one time slot is provided in a cycle for each subscriber station of the bus for transmitting its transmission signal and the cycle repeats cyclically. The scheduling unit determines, together with the other subscriber stations of the bus in the operation of the bus system using a priority of the transmission signal, which time slot of the cycle the transmitting/receiving device may use for transmitting the transmission signal on the bus.

Abstract: A user station for a serial bus system and a method for communication in a serial bus system. The user station includes a communication control unit, and a transceiver unit for transmitting a transmit signal for a message which is exchanged between user stations of the bus system. The bit time of a signal transmitted in the first communication phase on the bus differs from a bit time of a signal transmitted in the second communication phase. The communication control unit generates the transmit signal according to a frame, in which in addition to a field which indicates the priority of the message, a field for a data type is provided, and the communication control unit being designed to write a value in the field for the data type which indicates which type of information is located in a data field of the frame.

Abstract: A user station for a serial bus system, including a communication control device for controlling a communication of the user station with at least one other user station of the bus system, and a transceiver device for transmitting a transmission signal, generated by the communication control device, onto a bus of the bus system. The communication control device is designed to generate the transmission signal according to a frame, and to insert into the frame at least one field that is designed for checking whether the bit stream of the frame in a user station of the bus system that receives the frame is shifted by at least one bit compared to the expected frame.

Abstract: A user station for a serial bus system and a method for transmitting a message in a serial bus system. The user station includes a communication control device for transmitting messages to a bus of the bus system and/or for receiving messages from the bus of the bus system, and a bit rate switchover unit for switching over a bit rate of the messages from a first bit rate in a first communication phase to a second bit rate for a second communication phase. The bit rate switching unit is designed to switch the bit rate from the first bit rate over to the second bit rate, due to an edge of a predetermined bit sequence that includes one bit of the first communication phase and one bit of the second communication phase.

Abstract: A subscriber station for a serial bus system including a communication control device for controlling a communication with another subscriber station and a transceiver device for sending a transmit signal produced by the communication control device as a frame to a bus of the bus system. The bit time of a signal sent to the bus in the first communication phase differs from a bit time of a signal sent in the second communication phase. The communication control device produces the transmit signal, in a first operating mode, for a first frame that is designed according to a specified communication protocol with which other subscriber stations in the bus system communicate, and is designed to produce the transmit signal, in a second operating mode, for a second frame that assigns to at least one bit a different function than is assigned to the bit in the specified communication protocol.

Abstract: An interface module for a communication control device of a subscriber station. The interface module has at least one configuration register for configuring the bit time of a first communication phase of a frame and/or the bit time of a second communication phase of the frame by means of which frame messages are exchanged between subscriber stations of the bus system, and a modulator for modulating a transmission signal to form a modulated transmission signal which has the bit time of the second communication phase, which bit time is configured in the at least one configuration register and differs from the bit time of the first communication phase. The interface module is configured to output the transmission signal input into the modulator to a transmitting/receiving device of the subscriber station.

Abstract: A user station for a serial bus system. The user station includes a communication control device for controlling a communication of the user station with at least one other user station, and a transceiver device for transmitting a transmission signal, generated by the communication control device, onto a bus, so that for a message that is exchanged between user stations of the bus system, the bit time of a signal transmitted onto the bus in the first communication phase is different from a bit time of a signal transmitted in the second communication phase. The communication control device generates the transmission signal according to a frame in which a field for a header check sum and a field for a frame check sum are provided, and computers the header check sum from all bits in the header of a frame that is formed for the message, except fixed stuff bits.