Author Topic: BUG v1.02.10 widescreen VBI in PAL composite doesn't work  (Read 1094 times)

July 20, 2009, 03:52:42 PM
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When using the composite signal output on a PAL widescreen TV (in my case a crt), the TV does not automatically switch to 16:9 widescreen. I have to do this manually on the TV, to set the aspect ratio to "wide". This will then horizontally strech the anamorph image.

When the WD TV is set to NTSC this is working fine. Then the TV automatically switches from normal to wide.
In both cases I am using the setting for 'widescreen' not 'normal' in the WD TV.

The TV responds to a widescreen-signal inserted in a special scan line (WSS) (this process is called VBI - vertical blanc insertion)
The WD TV does it correct for NTSC but not for PAL.
Reference: ETSI EN 300 294 "625-line television Wide Screen Signalling (WSS)" (PAL systems).
For Japan: EIA-J CPR-1204 (NTSC system)

This is a problem with the Composite signal output.
The workaround is to set the TV manual to "WIDE" (not ZOOM) as the output is correctly anmamorph.
It is annoying as the TV will switch back and forward between normal and wide when going in and out of the composite input.