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Data bridging of VBI information on K2 Summit system HD channels

On channels with the XDP (HD) license, data is bridged as follows:
Source format Source data Conversion

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Converted format Converted data
SD 525 line Closed-captioning (CC) on line 21 (EIA-608) can be stored as UserData1 CC packets or UserData VBI Line21 (Uncompressed VBI Line21) Up-convert HD Ancillary Closed Caption EIA-708-B packets
EIA-708 Up-convert HD EIA-708
SD 625 line Teletext (except as below) No up-conversion to HD
5 lines of VBI Teletext in OP-47 packets Up-convert HD OP-47 ancillary data packet in SD data track file. SD Teletext is in ancillary data location as specified in OP-47 packet.
SD

625 line

525 line

Ancillary data Up-convert HD Moved to valid lines
HD EIA-708 & 608 Ancillary data packets Down-convert SD Closed-captioning on line 21 (EIA-608 standard).
HD Teletext as OP-47 packets Down-convert SD Output as VBI waveforms on lines specified in OP-47 packet or as specified by "Teletext Output Lines" data track settings in AppCenter Configuration Manager.
HD 1080i Ancillary data Cross-convert HD 720p Moved to valid lines.
HD 720p Ancillary data Cross-convert HD 1080i Moved to valid lines. Any data on lines 21-25 is moved to line 20 on 1080i output.
1 UserData CC packets always on. If CC exists, it is recorded and played back. MPEG UserData can be played out but not recorded.

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