Emergency alert signaling method and digital television...

H - Electricity – 04 – N

Patent

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Details

H04N 21/435 (2011.01) H04H 20/59 (2009.01) H04H 60/29 (2009.01) H04N 5/50 (2006.01) H04N 7/26 (2006.01)

Patent

CA 2567383

A digital television receiver includes a tuner receiving a digital television signal including a DCCT, a demodulator demodulating the digital television signal, and a demultiplexer demultiplexing the DCCT from the demodulated signal. The receiver further includes a decoder parsing channel ID information and a priority code from the DCCT, where the channel ID information specifies an emergency alert channel associated with an emergency alert event and the priority code specifies an alert priority of the emergency alert event. The receiver further includes a controller that controls operation of the tuner to automatically tune to the emergency alert channel based upon the alert priority.

Un téléviseur numérique comprend un syntoniseur qui reçoit un signal de télévision numérique comprenant un DCCT, un démodulateur, démodulant le signal de télévision numérique, et un démultiplexeur, démultiplexant le DCCT du signal démodulé. Ce téléviseur comprend de plus un décodeur analysant l'information d'identification de canal et un code de priorité du DCCT. Cette information d'identification de canal spécifie un canal d'alerte d'urgence, associé à un événement d'alerte d'urgence et le code de priorité spécifie une priorité d'alerte de l'événement d'alerte d'urgence. Le téléviseur comprend de plus un contrôleur qui commande le syntoniseur pour que celui-ci s'accorde automatiquement sur le canal d'alerte d'urgence en fonction de la priorité d'alerte.

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