A system of fm data broadcasting and a method of processing...

H - Electricity – 04 – B

Patent

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H04B 1/16 (2006.01) H04H 5/00 (2006.01)

Patent

CA 2234871

A FM data broadcasting system comprising a transmitting section and a receiving section, input terminals, a stereo encoder and out terminals, the system is characterized in that the transmitting section further comprises a data transmitting unit, the first converting switch, the second converting switch, a mode controlling terminal; the receiving section further comprises a data receiving unit, a band-pass filter, a pilot identifier, the third converting switch, the system is compatible with the conventional FM broadcasting system and is effective to transmit data without any effectiveness on the reception of audio signals.

Un système de diffusion de données en F.M. comprend une section d'émission et une section de réception, des bornes d'entrée, un codeur stéréo et des bornes de sortie. Le système est caractérisé par le fait que la section d'émission comprend une unité d'émission des données, un premier commutateur de conversion, un second commutateur de conversion et une borne contrôlant le mode; la section réceptrice comprend en outre une unité réceptrice des données, un filtre à bande passante, un identificateur pilote et un troisième commutateur de conversion. Le système est compatible avec les systèmes de diffusion F.M. connus et il permet de transmettre efficacement les données sans aucun effet sur la réception des signaux audio.

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