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Emergency alert signaling method and digital television receiver

  • US 7,681,215 B2
  • Filed: 11/09/2006
  • Issued: 03/16/2010
  • Est. Priority Date: 11/09/2005
  • Status: Active Grant
First Claim
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1. An emergency alert signaling method for use by a terrestrial digital television (DTV) receiver, the method comprising:

  • receiving a digital television signal including a direct channel change table (DCCT) from a broadcast transmitter, wherein the DCCT contains a priority code, a dcc selection type field of the DCCT and channel ID information;

    parsing the channel ID information and the priority code from the DCCT, wherein 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; and

    automatically tuning to the emergency alert channel based upon the alert priority.

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