Abstract: A method is disclosed for checking the switching region of a touch-free switching system with at least one sensor and at least one signal emitter, wherein the signal emitter sends data to the sensor. An extremely flexible and practical switching region check is achieved in at least one embodiment by the fact that a change in at least one system parameter of the switching system derives at least one first piece of information on the position of the signal emitter. The method represents an inexpensive possibility for checking a switching region, which has options for the definition and allocation of the switch-on, switch-off, and hysteresis regions.

Abstract: A car antitheft system includes a main controller invisibly mounted on a car, and an antitheft state indicator embedded in an engine start button of the car and electrically connected to the main controller for indicating a current antitheft state of the car. With these arrangements, the engine start button serves to start the car when the car antitheft system is released, and to indicate the current antitheft state of the car when the car antitheft system is enabled and the antitheft state indicator embedded in the engine start button is lighted, so as to warn and stop a thief from invading the car.

Abstract: A safety logic for vehicle rollover detection systems comprising a main rollover detection logic and at least one protection device for the occupant or occupants of the vehicle, including a vehicle lateral acceleration sensor (11), which generates an output signal indicating a near rollover event, when a lateral acceleration of a vehicle exceeds the first predefined threshold value (15) or, when a lateral acceleration of vehicle exceeds the second predefined threshold value (16) that is lower than the first predefined threshold value (15) and simultaneously at least one additional safety logic activation signal is present (1, 1?, 1?, 1??).

Abstract: The invention relates to a method and a device for triggering at least on firing element for restraining means in a motor vehicle. In said method and device a firing command is transmitted from a control unit to a firing device for the firing elements. The firing command is subsequently repeatedly n-fold, whereby n is at least equal to 1. The n+1 transmitted firing commmands are evaluated in the firing device and once the last of the n+1 firing commands has been transmitted, the firing elements are triggered.

Abstract: Dedicated memory locations for vehicle identification data and seat calibration data are provided in a first rewritable, non-volatile memory within an occupant detection system module and a second rewritable, non-volatile memory external to the occupant detection system. At least once each ignition cycle, preferably at power up, an algorithm responsive to vehicle identification data obtained from the vehicle, stored in the first rewritable, non-volatile memory and/or stored in the second rewritable, non-volatile memory, as well as the presence of seat calibration data in the first rewritable, non-volatile memory, controls the copying of seat calibration data and/or vehicle identification data between the first and second rewritable, non-volatile memories to preserve seat calibration data for a vehicle through replacement of the occupant detection system module or the entire occupant detection system.