Caption Standards

Question 1

XDS

Answer 1

Extended Data Services (now XDS, previously EDS), is an American standard classified under Electronic Industries Alliance standard CEA-608-E[1] for the delivery of any ancillary data (metadata) to be sent with an analog television program, or any other NTSC video signal.
XDS is used by TV stations, TV networks, and TV program syndication distributors in the USA for several purposes.
Here are some of the most common uses of XDS:

• The “autoclock” system delivers time data via an XDS “Time-of-Day Packet” for automatically setting the clock of newer TVs & VCRs sold in the USA. Most PBS stations provide this service.
• Rudimentary program information which can be displayed on-screen, such as the name and remaining time of the program,
• Station identification,
• V-chip content ratings data.

Question 2

SMPTE

Answer 2

SMPTE-TT is the latest format for online closed captioning

SMPTE 360M (VANC)

 SMPTE 334M (VANC)
 SMPTE 436M (ANC, VBI)
 SMPTE 2016 (AFD, Bar Data)

Question 3

SCC

Answer 3

Scenarist Closed Caption

legacy Scenerist

Question 4

SAMI

Answer 4

Synchronized Accessible Media Interchange

Question 5

COVE 2.0

Answer 5

the COVE 2.0 system will automatically convert it to SMPTE-TT for storage and online display

Question 6

EIA

Answer 6

EIA‐608
EIA‐708

Question 7

ATSC

Answer 7

ATSC 608
ATSC 708

Question 8

SCTE

Answer 8

SCTE‐20

Question 9

VBI

Answer 9

VBI (Line 21)

Question 10

CGMS

Answer 10

CGMS‐A

Question 11

Harris (HCC)

Answer 11

Harris (HCC)

Question 12

CaptionXML™

Answer 12

CaptionXML™