Emergency alert signaling method and DTV receiver

Details Emergency alert signaling method and DTV receiver Emergency alert signaling method and DTV receiver

2006-10-20

2010-02-16

Lonsberry, Hunter B. (Department: 2421)

Interactive video distribution systems

Program, message, or commercial insertion or substitution

Emergency warning

C725S032000, C725S034000, C725S035000, C725S038000, C725S040000

Reexamination Certificate

active

07665106

ABSTRACT:
A terrestrial digital television receiver includes a tuner, a microcomputer, and a demodulator. The microcomputer initially determines whether the DTV receiver is on, a power-on or power-off mode. If the DTV receiver is on the power-off mode, the microcomputer, control operation of the tuner to tune to a predefined emergency alert channel to receive a master guide table. The demodulator parses the master guide table. If the parsed master guide table indicates that a new emergency alert message is being received, the microcomputer automatically sets the DTV receiver on the power-on mode and controls operation of the tuner to tune to the emergency alert channel.

REFERENCES:
patent: 7444657 (2008-10-01), Kendall et al.
patent: 7506349 (2009-03-01), Rodolico

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