Method for identifying extender text table of electronic program guide in digital TV

A digital television (DTV) transmitter for processing a DTV signal, the DTV transmitter comprising:

• a program and system information protocol (PSIP) generator configured to generate a plurality of event extended text table (ETT) instances that appear in transport stream packets with common PID values, the event ETT instances having common table ID values, each event ETT instance comprising a section header and a message body, the section header containing a table identification (ID) extension field that serves to establish uniqueness of each event ETT instance, the message body containing an extended text message (ETM) which provides detailed descriptions of an event associated with each event ETT instance;
• a multiplexer configured to multiplex the event ETT instances and audio and video (AV) data;
• and
• a transmitting unit configured to transmit a DTV signal including the multiplexed event ETT instances and AV data.

A digital television (DTV) receiver for processing a DTV signal, the DTV receiver comprising:

• a receiving unit configured to receive a digital television signal including a plurality of channel extended text table (ETT) instances that appear in transport stream packets with common PID values, the channel ETT instances having common table ID values, each channel ETT instance comprising a section header and a message body, the section header containing a table identification (ID) extension field that serves to establish uniqueness of each channel ETT instance, the message body containing an extended text message (ETM) which provides detailed descriptions of a virtual channel associated with each ETT instance;
• a demodulator configured to demodulate the digital television signal;
• and
• an identifying unit configured to identify at least one pertinent channel ETT instance from the plurality of channel ETT instances.

A digital television (DTV) transmitter for processing a DTV signal, the DTV transmitter comprising:

• a program and system information protocol (PSIP) generator configured to generate a plurality of channel extended text table (ETT) instances that appear in transport stream packets with common ND values, the channel ETT instances having common table ID values, each channel ETT instance comprising a section header and a message body, the section header containing a table identification (ID) extension field that serves to establish uniqueness of each channel ETT instance, the message body containing an extended text message (ETT) which provides detailed descriptions of a virtual channel associated with each ETT instance;
• a multiplexer configured to multiplex the channel ETT instances and audio and video (AV) data;
• and
• a transmitting unit configured to transmit a DTV signal including the multiplexed channel ETT instances and AV data.