Digital Video Broadcasting (DVB); Specification for the carriage of Vertical Blanking Information (VBI) data in DVB bitstreams
data intended to be transcoded into the VBI of MPEG-2 decoded video. The definitions given by the present document
are an extension of the format specified by EN 300 472 .
The extensions include Inverted Teletext, VPS (EN 300 231 ) and WSS (EN 300 294 ) data to be used for
625-line systems and Closed-Captioning (EIA-608 Revision A ) data to be used for 525-line systems. Also, a generic
format for transmitting luminance-only VBI data is defined to have a means of coping with other standard or
non-standard VBI systems.
The present document allows for conveying VBI data units and EBU Teletext data units using the same elementary
stream. Backwards compliance with the EN 300 472  is guaranteed, as the EBU Teletext as specified in
EN 300 472  and VBI data as specified in the present document can co-exist in the same service on separate PIDs.
To cater for this, some extensions to the SI, EN 300 468  have been defined.