Abstract: An infrared (IR) receiving device (1) with IR detector elements (3) for receiving IR signals from a communication zone (5), as well as with a processing circuit for deriving electric signals corresponding to the IR signals received, wherein the IR detector elements (3) are provided in at least one matrix-type arrangement (2) which corresponds to a matrix-type segmentation of the communication zone (5), and the processing circuit comprises a maximum detector circuit (9) connected to the IR detector elements (3), which maximum detector circuit (9) selects one respective maximum output signal from among the output signals of the IR detector elements (3) for deriving the electric signal.

Abstract: A wireless, in particular mobile, communication device (8) for communicating with communication units (9) in vehicles (5, 6, 7), comprising a transmitter (26) and a receiver (29) for information-containing electromagnetic waves, as well as a control unit (25) for controlling the transmitter (26), a directional characteristic (10, 10?) being provided for the receiver (29) and/or for the transmitter (26), for a selective communication with communication units (9) in vehicles (5, 6, 7) at distances (D) of more than 10 m, preferably in the order of from 20 m to 200 m, e.g. in the order of approximately 100 m, in particular with a receiving angle, or a radiation angle, respectively, of from 0.5° to 4°, preferably 0.8° to 2.5°, and a sighting unit (13) as well as an indication unit (16, 18) being provided, the indication unit being connected with the receiver (29) via a processing unit.

Abstract: A motor vehicle infrared (IR) communication device (2) for an electronic fee-charging system, comprising IR transmitting and receiving elements (9) arranged in a housing (4) and oriented according to a first direction (10), which first direction (10) extends at least substantially in a vertical longitudinal plane of the motor vehicle when the communication device (2) is in a state installed in a motor vehicle, and transmitting and receiving electronics (36, 37); further IR elements (13) oriented at least according to a second direction (14) are additionally arranged in the housing (4), this second direction (14) being oriented towards a side, relative to the first direction (10), or to the vertical longitudinal plane, respectively.

Abstract: A system for automatically charging fees when predetermined positions are passed, comprising a communication device (4) for dedicated short range communication (DSRC) that is intended for an at least temporarily stationary installation, and at least one mobile communication unit (7) for dedicated short range communication (DSRC); the DSRC communication device (4) provided to be stationarily installed is adapted for transmitting information identifying itself and thus, at least indirectly, its position of installation to the mobile DSRC communication unit (7).