Date   : Wed, 03 Aug 2011 04:03:41
From   : ats@... (Adam Sampson)
Subject: [BeebSoc] Auntie, dear Auntie

Rick Murray <heyrick.beebsoc@...> writes:

> [...] leading to something that *could* be read out from a video
> recording.

I've been wondering lately about the possibility of recovering Teletext
data from old VHS recordings with some smarter signal processing -- for
example, correcting for jitter by identifying bit boundaries, exploiting
repetition of lines over time, and using statistical methods to help
resolve ambiguous bits based on what they're likely to be. I suspect you
could do an awful lot better than a conventional on-the-fly decoder is
able to, and I like the idea of being able to construct a Teletext
historical archive from random off-air recordings...

(S-VHS apparently preserves Teletext reasonably well anyway, but I never
had an S-VHS machine.)

> Rick 2:254/86.1 (once upon a time)

Glad I'm not the only one who can remember their Fido address. ;-)

Adam, 2:440/6.18

-- 
Adam Sampson <ats@...      >                         <http://offog.org/>