Data reception circuit for infrared signals

Details Data reception circuit for infrared signals Data reception circuit for infrared signals

H - Electricity

04

B

H04B 10/06 (2006.01) H04B 10/158 (2006.01)

Patent

CA 2295854

The invention relates to a data reception circuit for infrared signals, for use especially with toll road system, comprising several infrared detectors (5) the signals of which are fed to a summing circuit to increase performance while interfering signals are suppressed. To improve the signal/noise ratio the invention provides for several input circuits each having an infrared detector (5a, 5b to 5n) and a separate amplifier (6a, 6b to 6n) assigned to each detector, and for said input circuits to be connected in parallel to the summing circuit (7).

L'invention concerne un circuit de réception de données pour signaux infrarouges, notamment pour systèmes de péage routiers, qui comprend plusieurs détecteurs à infrarouges (5), dont les signaux sont acheminés jusqu'à un circuit de sommation afin d'augmenter le rendement utile, avec élimination des signaux parasites. Afin d'améliorer le rapport signal/bruit, il est prévu plusieurs circuits d'entrée munis chacun d'un détecteur à infrarouges (5a, 5b à 5n) et d'un amplificateur (6a, 6b à 6n) séparé associé. Lesdits circuits d'entrée sont connectés en parallèle au circuit de sommation (7).

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