Digital television signal, digital television receiver, and...

Details Digital television signal, digital television receiver, and... Digital television signal, digital television receiver, and...

2011-04-26

2011-04-26

Beliveau, Scott (Department: 2427)

Interactive video distribution systems

Operator interface

To facilitate tuning or selection of video signal

C725S131000, C725S139000

Reexamination Certificate

active

07934238

ABSTRACT:
A digital television (DTV) signal for use in a DTV receiver includes an extended text table (ETT) which includes a header and a message body. The header includes a table identification extension field which serves to establish uniqueness of the ETT, and the message includes an extended text message (ETM). If the ETT is an event ETT, the table ID extension field includes an event identification which specifies an identification number of an event associated with the ETT. On the other hand, if the ETT is a channel ETT, the table identification extension field includes a source identification which specifies a programming source of a virtual channel associated with the ETT. A section-filtering unit included in the DTV receiver is able to use table identification extension fields of a plurality of ETTs for section-filtering a pertinent event or channel ETT from the ETTs.

REFERENCES:
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“Program and System Information Protocol for Terrestrial Broadcast and Cable”, ATSC Standard of Dec. 23, 1997, prepared by the United States Advanced Television Systems Committee (ATSC) Doc. A/65.

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