Abstract: A door system includes a sensor device for monitoring a vertical door edge. The sensor device has a transmitter that generates a light beam that runs along the vertical door edge, and a receiver to receive the light emitted by the transmitter. Further, an element of the sensor device is mounted in a region of a base of the door, with the sensor element being either in or on the base in front of the vertical door edge.

Abstract: A door system comprising a sensor device for monitoring vertical door edges. The sensor device includes a transmitter that generates a light beam that runs along the vertical door edge, and a receiver to receive the light emitted by the transmitter. According to the invention, an element of the sensor device is mounted in the region of the base, preferably in or on the base in front of a vertical door edge.

Abstract: A system for detecting an object in a monitoring area with a plurality of sensors, each including a transmitter and a receiver, and an electronics unit for evaluating the receivers. The electronics unit is capable of assigning a contact address to a transmitter and/or to a receiver, wherein address assignment is effected such that after the address assignment it is possible for the electronics unit to associate receivers with transmitters.

Abstract: The apparatus is a motion picture camera including a charge coupled photosensitive device provided with a multiplicity of unit sensors. The sensors are arranged in a matrix of M rows and N columns.The apparatus is equipped with a pulse generator for controlling the transfer of charges from sensor to sensor along the columns, the frequency of the pulses being adjusted to effect substantial correspondence between the speed of charge transfer and the speed of the image moving over the device. A shift register is arranged at the end of the columns so as to receive in parallel information from said columns and to transmit it in series to an output circuit for reconstitution of the image.The apparatus is used for timing sporting events.This invention concerns an apparatus for timing sporting events including a motion picture camera installed at a fixed position and having a lens the axis of which is directed onto a line to be crossed by competitors so as to record the events occurring on said line.