About: EIA-608

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EIA-608, also known as "line 21 captions" and "CEA-608", was once the standard for closed captioning for NTSC TV broadcasts in the United States, Canada and Mexico. It also specifies an "Extended Data Service", which is a means for including a VCR control service with an electronic program guide for NTSC transmissions that operates on the even line 21 field, similar to the TeleText based VPS that operates on line 16 which is used in PAL countries. It was developed by the Electronic Industries Alliance and required by law to be implemented in most television receivers made in the United States.

Attributes	Values
rdf:type	yago:Abstraction100002137 yago:Measure100033615 yago:Standard107260623 yago:SystemOfMeasurement113577171 yago:WikicatEIAStandards
rdfs:label	EIA-608 (en)
rdfs:comment	EIA-608, also known as "line 21 captions" and "CEA-608", was once the standard for closed captioning for NTSC TV broadcasts in the United States, Canada and Mexico. It also specifies an "Extended Data Service", which is a means for including a VCR control service with an electronic program guide for NTSC transmissions that operates on the even line 21 field, similar to the TeleText based VPS that operates on line 16 which is used in PAL countries. It was developed by the Electronic Industries Alliance and required by law to be implemented in most television receivers made in the United States. (en)
foaf:depiction
dcterms:subject	Broadcast engineering EIA standards
Wikipage page ID	1154851 (xsd:integer)
Wikipage revision ID	1114515041 (xsd:integer)
Link from a Wikipage to another Wikipage	Canada Question mark Electronic Industries Alliance Electronic program guide United States Colon (punctuation) Comma (punctuation) Copyright symbol Material Exchange Format Full stop GB 2312 NTSC Apostrophe (punctuation) Slash (punctuation) Closed captioning PAL Programme Delivery Control Bullet (typography) @ ATSC Standards Ampersand DVD-RAM Exclamation mark Federal Communications Commission Broadcasting Non-breaking space Norpak Number sign Broadcast engineering Guillemet Hyphen EIA standards Superscript Music Teletext Digital television Space (punctuation) H.222 Mexico OSI model Semicolon Serial digital interface Service mark symbol Sharp (music) Non-English usage of quotation marks Service mark SMPTE 259M KS C 5601 Transmission (telecom) SMPTE 291M Picture user data EIA-708 Box drawing characters
Link from a Wikipage to an external page	http://edocket.access.gpo.gov/cfr_2007/octqtr/pdf/47cfr15.119.pdf http://www.access.gpo.gov/nara/cfr/waisidx_01/47cfr15_01.html https://shop.cta.tech/products/line-21-data-services
sameAs	EIA-608 EIA-608 EIA-608 EIA-608
dbp:wikiPageUsesTemplate	dbt:Main dbt:More_citations_needed dbt:Multiple_issues dbt:Reflist dbt:Short_description dbt:Technical
thumbnail	wiki-commons:Special:FilePath/Line21ClosedCaption.png?width=300
has abstract	EIA-608, also known as "line 21 captions" and "CEA-608", was once the standard for closed captioning for NTSC TV broadcasts in the United States, Canada and Mexico. It also specifies an "Extended Data Service", which is a means for including a VCR control service with an electronic program guide for NTSC transmissions that operates on the even line 21 field, similar to the TeleText based VPS that operates on line 16 which is used in PAL countries. It was developed by the Electronic Industries Alliance and required by law to be implemented in most television receivers made in the United States. EIA-608 captions are transmitted on either the odd or even fields of line 21 with an odd parity bit in the non-visible active video data area in NTSC broadcasts, and are also sometimes present in the picture user data in ATSC transmissions. It uses a fixed bandwidth of 480 bit/s per line 21 field for a maximum of 32 characters per line per caption (maximum four captions) for a 30 frame broadcast. The odd field captions relate to the primary audio track and the even field captions related to the SAP or secondary audio track which is generally a second language translation of the primary audio, such as a French or Spanish translation of an English-speaking TV show. Raw EIA-608 caption byte pairs are becoming less prevalent as digital television replaces analog. ATSC broadcasts instead use the EIA-708 caption protocol to encapsulate both the EIA-608 caption pairs as well as add a native EIA-708 stream. EIA-608 has had revisions with the addition of extended character sets to fully support the representation of the Spanish, French, German languages, and cross section of other Western European languages. EIA-608 was also extended to support two byte characters for the Korean and Japanese markets. The full version of EIA-708 has support for more character sets and better caption positioning options; however, because of existing EIA-608 hardware and revisions to the format, there has been little or no real world use of the format besides simple 608 to 708 inline conversions. (en)
prov:wasDerivedFrom	wikipedia-en:EIA-608?oldid=1114515041&ns=0
page length (characters) of wiki page	40049 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:EIA-608
is Link from a Wikipage to another Wikipage of	List of interface bit rates V-chip Comparison of video container formats NTSC Closed captioning CTA-708 FFmpeg Flash Video Four, Isère History of YouTube List of EIA standards Teletext CEA-608 CEA608 Line 21 Line21

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