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Rating Region Table (RRT) [ATSC Syntax]

Each Rating Region table section conveys information about the various rating "dimensions" and the "values" for each dimension within a single rating region.

packetization characteristics
packet idunique pidt_s_ca_f_cp_u_s_ipointer_fieldlisted in MGT
8187 / 0x1FFBFalse'00''01'True0-182By rating_region
maximums
ms per sectionsections per
rating_region
bytes per section
60,00011024

The purpose of an ATSC Rating region table is to convey to the receiver essential information about the rating region or rating regions that apply to the programs on a particular transport stream.

The ratings information on a particular program is contained in the ATSC content advisory descriptor

section syntax
syntaxbit index# of bitsmnemonic
table_id08202 / 0xCA
section_syntax_indicator81'1'
private_indicator91'1'
reserved102'11'
section_length1212uimsbf
reserved2480 / 0xFF
rating_region328uimsbf
reserved402bslbf
version_number425uimsbf
current_next_indicator471'1'
section_number488uimsbf
last_section_number568uimsbf
ATSC_protocol_version64 80 / 0x00
rating_region_name_length728uimsbf
rating_region_name_text80varAuimsbf
dimensions_defined80 + varA80 / 0x00
for i = 0 to dimensions_defined-1
  dimension_name_length88+varA8uimsbf
  dimension_name_text96+varAvarBuimsbf
  reserved96+varA+varB3'111'
  graduated_scale99+varA+varB1bssbf
  values_defined100+varA+varB4uimsbf
  for j = 0 to values_defined-1
    abbrev_rating_value_length104+varA+varB8uimsbf
    abbrev_rating_value_text112+varA+varBvarCuimsbf
    rating_value_length112+varA+varB+varC8uimsbf
    rating_value_text120+varA+varB+varCvarDuimsbf
  next j
next i
reserved 6'111111'
descriptors_length 10bslbf
descriptor() varC 
CRC_32 32rpchof
Table section legend
Note: bit index is only indicated for the first time through a single loop of a subsection.
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