An optical receiver picks up reflected light from an area to be monitored. Using a corresponding optical receiving signal determines an up-to-date shape for a reflected line grating, which is compared with a previously determined line grating shape acting ...

The method for detecting unauthorized lifting of a car (31) comprises detecting its angle of inclination (63). This is compared with a threshold value and an alarm signal is produced when it is exceeded. An Independent claim is included for a car alarm usi...

A security system is disclosed for a motor vehicle having a telecommunications system (22,.40) and a remote locking system (34). A transmitter (36) is provided for transmitting a distress signal at the frequency of the remote locking system when an alarm c...

The electrical drive (1), with a motor (3) to operate a window, has an integrated interface (8) at the drive housing (2) for connection to a bus system. The housing also contains an electronic control (7). The drive can be operated remotely to give ventila...

A device for anti-theft protection of a motor vehicle is proposed. At least one signal processing unit (14) evaluates a sensor signal (12) from a sensor (10) in a first operating mode (16) for generating an activation signal for a functional unit (21, 22, ...

An intruder detection system (10) for a motor vehicle comprising a radar sensor having a number of faces; a transmitter antenna (20) mounted on each face; at least one receiver antenna (22,24) mounted on each face; a transceiver (18) associated with each f...