Abstract: A data network has at least three line branches connected via a common star node to distribute message signals from one of the line branches onto the other line branches, wherein connected to at least one of the line branches is at least one bus-user device is configured to generate in a corresponding transmit mode by a corresponding transmit unit at least one of the message signals, wherein in the corresponding bus-user device, the transmit unit has a current source circuit which, in generating the message signal (16), is configured to inject an electric current into electrical lines of the line branch to which the bus-user device is connected, and via the current source circuit the lines are connected to an internal impedance value of the current source circuit that in transmit mode is constantly greater than 10 times the value of the characteristic impedance, for example greater than 500 Ohms.

Abstract: A data network has at least three line branches connected via a common star node to distribute message signals from one of the line branches onto the other line branches, wherein connected to at least one of the line branches is at least one bus-user device is configured to generate in a corresponding transmit mode by a corresponding transmit unit at least one of the message signals, wherein in the corresponding bus-user device, the transmit unit has a current source circuit which, in generating the message signal (16), is configured to inject an electric current into electrical lines of the line branch to which the bus-user device is connected, and via the current source circuit the lines are connected to an internal impedance value of the current source circuit that in transmit mode is constantly greater than 10 times the value of the characteristic impedance, for example greater than 500 Ohms.

Abstract: A data network has at least three line branches connected via a common star node to distribute message signals from one of the line branches onto the other line branches, wherein connected to at least one of the line branches is at least one bus-user device is configured to generate in a corresponding transmit mode by a corresponding transmit unit at least one of the message signals, wherein in the corresponding bus-user device, the transmit unit has a current source circuit which, in generating the message signal (16), is configured to inject an electric current into electrical lines of the line branch to which the bus-user device is connected, and via the current source circuit the lines are connected to an internal impedance value of the current source circuit that in transmit mode is constantly greater than 10 times the value of the characteristic impedance, for example greater than 500 Ohms.

Abstract: Disclosed are an apparatus and a method for generating at least one data packet to be transmitted in a bus system of a motor vehicle, wherein before transmitting the at least one data packet comprising the message to be included in the data packet a bus subscriber transmitting the data packet uses a first encryption apparatus to generate a message authentication code that is likewise to be included in the data packet by —using a first encryption method to generate an encrypted message code from the message with a first key, —using a second encryption method to generate an encrypted count from a count by means of a second key, and —using a logic operation to generate the message authentication code to be transmitted from the encrypted message code and from the encrypted count, and an apparatus and a method for authentication checking such data packets at the receiver.

Abstract: A method for operating an electric motor is provided, wherein a motor actuating signal is generated and transmitted to the motor. In order to reduce the noise generated by operating the motor, a suitable additional signal is generated and overlaid on the motor actuating signal when the motor actuating signal is transmitted to the motor.

Abstract: A device and a method for determining the current position of a rotor, particularly the angle of rotation of the rotor, of an electric motor, wherein said device determines the current position of the rotor using the fluctuations of the armature current or the armature voltage of the electric motor. The fluctuations of the armature current or the armature voltage are separated from the fluctuations of the motor current or the motor voltage with the help of an amplifier unit dependent on a controllable offset value. The offset value is changed according to the motor current or the motor voltage. By virtue of the device and the method, the fluctuations of the armature current or the armature voltage can be separated from the fluctuations of the motor current or the motor voltage over the full measurement range of the motor current or the motor voltage.

Abstract: A method for operating an electric motor is provided, wherein a motor actuating signal is generated and transmitted to the motor. In order to reduce the noise generated by operating the motor, a suitable additional signal is generated and overlaid on the motor actuating signal when the motor actuating signal is transmitted to the motor.

Abstract: Disclosed is a method for positioning a mobile unit in a motor vehicle. The mobile unit is driven by an external force and equipped with an electronic jamming protection device. A tactile input unit is provided for positioning the mobile unit. An occupied position of the mobile unit is stored under certain conditions, whereby said stored position is automatically approached when the tactile unit is correspondingly operated.

Abstract: Disclosed is a method for detecting the current position of a rotor, in particular the angle of rotation of the rotor, an electromotor and a method for detecting the speed and/or the angle of rotation of an electromotor. The speed of the electromotor is hereby implied inter alia from the number of zero crossings of a comparison signal of the armature resistances or respectively conductances determined continuously in time and the average values of the armature resistances or respectively conductances determined continuously in time.

Abstract: Disclosed is a circuit arrangement for electrically controlling and/or regulating the movement of an electrically driven unit (2), especially a window lifter or sliding roof of a motor vehicle, and to a method for operating said circuit arrangement. According to the invention, a jamming protection System is characterized in that a correlation variable (K) for the adjusting force of the unit (2) is measured and the adjusting movement is stopped or reversed in order to prevent jamming if the correlation variable (K) for the adjusting force exceeds a threshold value that corresponding to a predetermined jamming force. A filter (140) is used for temporally filtering the correlation variable (K) for the adjusting force of the unit. The invention is characterized in that the filter parameters (142, 143), especially the cutoff frequency (fg) and/or the order of the filter (140), can be controlled.

Abstract: A device and a method for data and/or energy transmission from a stationary part to a pane-shaped part which is movable relative to the stationary part, particularly a window pane of a motor vehicle, and/or vice versa. Data and/or energy is transmitted between an electrical unit in or on the stationary part and an electrical unit in or on a pane-shaped part which is movable relative to the stationary part, particularly an adjustable window pane, by electromagnetic interaction between at least one induction coil in the form of a conductor loop which is arranged in or on the pane-shaped movable part and at least one annular magnetic circuit which is arranged in or on the stationary part. Use of the device as an anti-trap protection for the pane-shaped movable part, particularly for the adjustable window pane of a vehicle, and/or as a theft protection for a vehicle is described.

Abstract: A device and a method for determining the current position of a rotor, particularly the angle of rotation of the rotor, of an electric motor, wherein said device determines the current position of the rotor using the fluctuations of the armature current or the armature voltage of the electric motor. The fluctuations of the armature current or the armature voltage are separated from the fluctuations of the motor current or the motor voltage with the help of an amplifier unit dependent on a controllable offset value. The offset value is changed according to the motor current or the motor voltage. By virtue of the device and the method, the fluctuations of the armature current or the armature voltage can be separated from the fluctuations of the motor current or the motor voltage over the full measurement range of the motor current or the motor voltage.

Abstract: Disclosed is a method for positioning a mobile unit in a motor vehicle. The mobile unit is driven by an external force and equipped with an electronic jamming protection device. A tactile input unit is provided for positioning the mobile unit. An occupied position of the mobile unit is stored under certain conditions, whereby said stored position is automatically approached when the tactile unit is correspondingly operated.

Abstract: Disclosed is a method for detecting the current position of a rotor, in particular the angle of rotation of the rotor, an electromotor and a method for detecting the speed and/or the angle of rotation of an electromotor. The speed of the electromotor is hereby implied inter alia from the number of zero crossings of a comparison signal of the armature resistances or respectively conductances determined continuously in time and the average values of the armature resistances or respectively conductances determined continuously in time.

Abstract: Disclosed is a circuit arrangement for electrically controlling and/or regulating the movement of an electrically driven unit (2), especially a window lifter or sliding roof of a motor vehicle, and to a method for operating said circuit arrangement. According to the invention, a jamming protection System is characterized in that a correlation variable (K) for the adjusting force of the unit (2) is measured and the adjusting movement is stopped or reversed in order to prevent jamming if the correlation variable (K) for the adjusting force exceeds a threshold value that corresponding to a predetermined jamming force. A filter (140) is used for temporally filtering the correlation variable (K) for the adjusting force of the unit. The invention is characterized in that the filter parameters (142, 143), especially the cutoff frequency (fg) and/or the order of the filter (140), can be controlled.

Abstract: A method for electrical control and/or regulation of the movement of an electrically-driven unit, in particular, a window winder for a sunroof of a motor vehicle, is disclosed. A correlation parameter for the operating force of the unit is measured for trapping protection and a switching off or reversing of an operating movement is carried out as trapping protection, when the correlation parameter for the operating force exceeds a threshold value which corresponds to a given trapping force. A filter for temporal filtering of the correlation parameter for the operating force of the unit is provided, whereby the filter is deactivated in the presence of given operating conditions. According to the invention, the decision on the activation and deactivation of the filter is achieved, depending on an alternating signal fraction of the measured correlation parameter, or another parameter proportional thereto.

Abstract: In a method for determining the distance between two transmitting and receiving stations, a transmission signal is generated in each station and is transmitted as a series of microwave pulses having a predefined pulse repetition frequency to the other respective station. The coincidence of pulses of the transmission signal sent by the respective station and the signal received by the station is detected in each station as a coincidence event, and the number of pulses transmitted and received by the respective station at the time of the coincidence event is determined. The distance between the stations is then calculated on the basis of the number of the determined pulses.

Abstract: 1. Method for determining the distance between two transmitting and receiving stations. 2.1. In automotive engineering transmitting and receiving stations are usually used in keyless locking systems as electronic key modules or evaluation units for identifying the key module. Deactivation of the locking system is prevented, if the key module is not in the immediate vicinity of the evaluation unit. The novel method shall determine the distance between two transmitting and receiving stations with high resolution. 2.3. According to the novel method, a transmission signal is generated in each transmitting and receiving station and is transmitted as a series of microwave pulses having a predefined pulse repetition frequency to the other respective transmitting and receiving station.

Abstract: In automotive engineering transmitting and receiving stations are usually used in keyless locking systems as electronic key modules or evaluation units for identifying the key module. Deactivation of the locking system is prevented if the key module allocated by means of a clear identification number from the evaluation unit is not in the immediate vicinity of the evaluation unit. The novel method shall determine the distance between two transmitting and receiving stations with high resolution. According to the novel method, a transmission signal (S1, S2) respectively is generated in the transmitting and receiving stations (1, 2) and transmitted as a series of microwave pulses having a predefined pulse repetition frequency (fp1, fp2) to the other respective transmitting and receiving station (2, 1) and received thereby in the form of a received signal.

Abstract: The invention relates to a simple, economical and reliable method for providing anti-jamming protection. According to said method, the excess force—the difference between the driving force and the friction force—is compared with a trigger threshold. To this end, the curve of the friction force of the current actuation process, which is dependent on the actuation path of the electrical drive unit, is compared to the curve of the friction force of at least one previous actuation process and the trigger threshold value is modified according to how the friction force curves correspond. The invention also relates to a method for providing anti-jamming protection for an electrical drive unit for window lifting drives.