Abstract: A computer-assisted method of outputting an operating data record intended for a use of an electrical appliance includes the step of requesting, with a client system, an operating data record for an electrical appliance from a server computer system and transmitting the operating data record to the client system in electronic form. A computer system for providing data records and a client system for ordering data records are also provided.

Abstract: A motor vehicle occupant protection system and a method for triggering the system include an accident sensor and a control device. The latter controls system triggering as a function of a sensor output signal. The control device has an input terminal connected via a communication line to a sensor status signal output terminal. In the system and method, the sensor has internally checks errors at regular and/or irregular intervals, and, upon detection, permanently generates a status signal for the control device, which checks the status before triggering a vehicle occupant protection system when it receives a signal fulfilling system triggering criteria. The control device enables/disables the triggering as a function of the check result. Specifically, the control device disables the firing standby state and generates a warning signal. In the event of an accident, before the vehicle occupant protection system is fired, the status signal is interrogated once more, i.e., sensor status is checked.

Abstract: The invention concerns a method for the automatic recognition and correction of an invalid data set stored in a programmable circuit memory which is part of a group of at least three identical stored data sets, wherein the data sets of the group are compared to each other, and in the event that one data set of the group does not agree with the remaining data sets of the group same is recognized as being invalid and the remaining agreeing data sets are recognized as being valid, and the invalid data set is corrected through replacement with a valid data set. The invention is also directed to a system adapted to carry out this method.

Abstract: A trigger circuit for occupant protection systems in motor vehicles comprises a control unit which will effect the triggering of a means of restraint such as an airbag, depending on sensor signals generated by one or more external sensor units. To achieve a degree of triggering certainty, data interrogation must take place in very short time intervals. A safe transmission of data between the control unit and the sensor units will be ensured if, in accordance with this invention, the information units to be transmitted will each be encoded by means of a PWM signal with a certain period duration. The control unit will check the period duration of the PWM signal received, and, in the event of this actual period duration not matching the specified nominal value, it will not accept the relevant unit of information.