| 摘要 |
Warning apparatus for mobile telephone systems, comprising a receiver component (1) designed to receive telephone transmissions in a mobile telephone operating frequency, a detector component (2) to produce a detection signal indicating a mobile telephone transmission, and a control unit (4, 5) to control the devices driven by the detector (2). The apparatus comprises a selector unit (3) designed to select a detection signal in such a way that an active mobile telephone is in local use in the vicinity of the warning apparatus and is located within the selected operating area of the warning apparatus, which may consist of a building or a corresponding closed space, which unit in this case outputs a control signal, a voice drive unit (6) connected to the control unit (4, 5) and containing a plain-language message stored in it, relating to a prohibition or limitation of the use of a mobile telephone, and a speaker (7) for announcing a message relating to a prohibition or limitation of the use of a mobile telephone within the operating area of the warning apparatus. |
