JVC TDR6 Lines Expanded Windows Field for an Encoded Picture Frame

PAL

Lines 7 to 22 VBI Data

Line 23 First Line of Active Video

}

VBI Region

Active Picture

NTSC

}Lines 7 to 21 VBI Data

Line 22 First Line of Active Video

Line 311 Last Line of Active Video

Line 262 Last Line of Active Video

32-Lines Expanded Windows Field for an Encoded Picture Frame

DVB 4:2:2 Expanded Windows is supported on a composite analog or component digital (SDI) format video signal. This standard supports both PAL/625 and NTSC/525 format video standards, and can transmit any of the following VBI services:

■PAL mode: Teletext, PDC, WSS, and VPS

■NTSC mode: ATSC Closed Captions, V-Chip, AMOL I and II, and VITC

Operational Considerations

■Ensure that both VBI teletext and closed captions are disable when either 16- or 32-line expanded windows are enabled, as teletext and closed captions overwrite expanded windows data.

■Chroma must be set to 4:2:2 for proper expanded windows operations.

Hardware Requirements

■Encoders will properly process Expanded Windows VBI data with any of the following modules: TVIP-6021, TVIP-6025, or TVIP-6001.

■The TDR6 decoder processes VBI data in its standard configuration.

End-to-End Configuration

To configure the encoder and decoder for DVB 4:2:2 Expanded Windows operation, follow these steps:

Encoder

1.Ensure that all other VBI schemes are disabled.

2.Ensure that VBI data is included in the selected service video input signal.

3.Set chroma to 4:2:2 mode. Issue the front panel command

Config>Service #>Video>Chroma=4:2:2 or the remote VE.<port> CHROMA 4_2_2 command.

4.Configures the encoder to transmit either 16 or 32 lines of VBI information. Issue the front panel command Config>Service #>VBI>Expand> VBI_Passthru=type or the remote VE VBI_PASS type command, where type is set to 16_lines or 32_lines.

Tiernan VBI Data Transmission 01-0870-401B 01/03 75