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Rkolsen2,422 posts since 20 Jan 2014
BBC World
noggin posted:
Rkolsen posted:

The CEA-708 digital standard isn’t as flexible when it comes to recording. If your using a DVR it’s fine but if your outputting your receiver to a VCR (even ones with digital tuners) or a DVD recorder your out of luck. You would have to have your receiver output the captions to the recording device and they’d be burnt in with no way to turn them off.


Ah - I thought there were STBs that did 708 to 608 conversion at one point to allow for TV rather than STB decoding ? These would only work on SD outputs (same issue with DVB teletext, which can be re-inserted into an SD VBI for analogue SD output and display decoding, but has to be receiver decoded and burned into video for HD HDMI outputs)

Nope. The only way for a TV to do the decoding is for it to directly receive the signal.

Analog connections SD (composite) or HD (component) don’t transmit it either. So your stuck with the converter or STB.
Don’t let anyone treat you like you’re a VO/SOT when you’re a PKG.
Riaz558 posts since 6 Jan 2016
A long time ago I read an article about a proposal to integrate an MSX computer into a TV to create the first generation of smart TVs. This would not have been a difficult concept because many manufacturers of MSX computers also made TVs. An integrated MSX computer could be used in exactly the same way as an external MSX computer but it also provided a facility for software to be distributed via broadcasters by inserting it into the VBI. The possibilities would have been almost endless. Software could have ranged from video games to useful apps connected with TV programmes.
noggin14,037 posts since 26 Jun 2001
Rkolsen posted:
noggin posted:
Rkolsen posted:

The CEA-708 digital standard isn’t as flexible when it comes to recording. If your using a DVR it’s fine but if your outputting your receiver to a VCR (even ones with digital tuners) or a DVD recorder your out of luck. You would have to have your receiver output the captions to the recording device and they’d be burnt in with no way to turn them off.


Ah - I thought there were STBs that did 708 to 608 conversion at one point to allow for TV rather than STB decoding ? These would only work on SD outputs (same issue with DVB teletext, which can be re-inserted into an SD VBI for analogue SD output and display decoding, but has to be receiver decoded and burned into video for HD HDMI outputs)

Nope. The only way for a TV to do the decoding is for it to directly receive the signal.

Analog connections SD (composite) or HD (component) don’t transmit it either. So your stuck with the converter or STB.


Ah - not the case here. Because we have a DVB version of teletext that is data compatible with the old analogue SD VBI system it's very easy for SD STBs to received DVB World System Teletext packets and insert them into analogue video blanking for TVs downstream to decode. It's very useful for analogue SD ring mains in hotels showing satellite channels (as the teletext services - including subtitles - survive Smile )
DVB Cornwall7,901 posts since 4 Dec 2003
Westcountry Spotlight
I remember the rather crude use of Teletext to switch the source feeds on OnDigital and ITVDigital between providers for whom there was insufficient space for a 24 hour stream. The pages were viewer accessible too. It did make it onto the DTT platform despite many discussions to the contrary.