Alstom Transport Technologies

Spidcom Technologies

Alexandre Dubois

Bastian Simoni

Michel Desjardins

Joseph Fruhauf

A vehicle includes at least one side bay equipped with a window, and a device for displaying at least one item of information on the window. The display device includes an image projector fastened to a ceiling of the vehicle. The display device emits light rays. A system of at least one mirror is arranged to reflect light rays emitted by the image projector in the direction of the window.

Public transport vehicle, including a device for displaying on a window

The invention relates to a method for transmitting data over a carrier current using a frequency band. According to said method: the frequency band is divided into N sub-bands, N being a whole number higher than, or equal to, two; an OFDM (Orthogonal Frequency Division Multiplexing) technique is carried out on each of said sub-bands; and calculations are carried out based on each sub-band. The inventive method is characterised in that the calculations based on each sub-band are independent from the calculations based on the other sub-bands, and said sub-bands are dynamically activated and allocated. The invention also relates to modulation and demodulation devices for carrying out said method.

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Paris, France

Alexandre Dubois