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Terrestrial Virtual Channel table [ATSC Syntax]

Terrestrial Virtual Channel table sections convey basic information about virtual channels in the transport stream and optionally, other transport streams. The program_number field provides linkage to the appropriate Program Map table section, and source_id field provides a link to the appropriate Event Information table section.

packetization characteristics
packet idunique pidt_s_ca_f_cp_u_s_ipointer_fieldlisted in MGT
8187 / 0x1FFBFalse'00''01'True0-182Current & next
maximums
ms per sectionsections per
instance
bytes per sectioninstances
4002561024current
next

 

For terrestrial stations, a TVCT is a mandatory PSIP table that lists all the virtual channels available in an ATSC transport stream, and optionally, virtual channels available in other ATSC transport streams.

 

Terrestrial Virtual Channel table (TVCT) syntax
syntaxbit index# of bitsmnemonic
table_id08200 / 0xC8
section_syntax_indicator81'1'
private_indicator91'1'
reserved102'11'
section_length1212uimsbf
transport_stream_id2416uimsbf
reserved402bslbf
version_number425uimsbf
current_next_indicator471bslbf
section_number488uimsbf
last_section_number568uimsbf
ATSC_protocol_version64 80 / 0x00
num_channels_in_section728uimsbf
for i = 0 to num_channels_in_section-1
  short_name8014uimsbf
  reserved944'111'
  major_channel_number9810uimsbf
  minor_channel_number10810uimsbf
  modulation_mode1188uimsbf
  carrier_frequency12632uimsbf
  channel_tsid15816uimsbf
  program_number17416uimsbf
  ETM_location1902bslbf
  access_controlled1921bslbf
  hidden1931bslbf
  reserved1942'11'
  hide_guide1961bslbf
  reserved1973'111'
  service_type2006bslbf
  source_id20616bslbf
  reserved2226'111111'
  descriptors_length22810bslbf
  descriptor()238var 
next
reserved 6'111111'
additional_descriptors_length 10bslbf
additional_descriptor() var 
CRC_32 32rpchof
Table section legend
Note: bit index is only indicated for the first time through the table loop.

 

This page was last modified on December 3, 2009, to correct the name of the table as listed in the caption, to include the value "transport_stream_id" in the table section header, to correct the semantic value of that field, and to change the links for those corrections.

 

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