Statements (16)
| Predicate | Object | 
|---|---|
| gptkbp:instanceOf | gptkb:standard | 
| gptkbp:appliesTo | Line 21 of the vertical blanking interval | 
| gptkbp:category | Television technology standard | 
| gptkbp:defines | Closed captioning for NTSC television signals | 
| gptkbp:fullName | EIA-608 Revision D: Recommended Practice for Line 21 Data Service | 
| gptkbp:language | English | 
| gptkbp:publicationDate | 2006 | 
| gptkbp:publishedBy | gptkb:Electronic_Industries_Alliance gptkb:Consumer_Electronics_Association | 
| gptkbp:replacedBy | gptkb:CEA-708 gptkb:EIA-608_Revision_C | 
| gptkbp:usedFor | Analog television closed captions | 
| gptkbp:usedIn | gptkb:United_States | 
| gptkbp:bfsParent | gptkb:EIA-608D | 
| gptkbp:bfsLayer | 7 | 
| https://www.w3.org/2000/01/rdf-schema#label | EIA-608 Revision D |