Abstract: In a base element of a waveguide for a detector system at least one portion of radiation passing via the front side and impinging on a diffractive element in the display region is deflected via the diffractive element according to the selection region. The deflected portion is propagated as coupled-in radiation via reflection to an out-coupling region and impinges on the associated out-coupling section of the out-coupling region. The portion of radiation coupled out by an out-coupling section impinges on an associated sensor section of the sensor unit, which continuously measures the intensity of the impinging radiation and supplies the control unit, wherein, according to a change of intensity, which is dependent on positioning an object in front of the front side of the base element and in front of a selection region of the display region, the control unit determines whether the one selection region has been selected.

Abstract: A method for providing information and entertainment in a motor vehicle comprising ascertaining conditions within a passenger compartment of the motor vehicle, ambient conditions around the motor vehicle and operating parameters of the motor vehicle, evaluating information about a state of a first passenger and selecting information and/or entertainment from a result, and providing the information and/or entertainment selected for the first passenger is disclosed.

Abstract: An optimized communications system for radio-assisted traffic services such as railroad services. In addition to the fixed-position central services and the fixed-position decentralized control centers, one or more decentralized gateway computers are introduced into the traffic network, with the communication between the mobile objects and the fixed-position objects being provided via the gateway computers.