On Mon, 2004-12-20 at 10:31 +0000, Tom Hughes wrote: > In message <[EMAIL PROTECTED]> > John Pullan <[EMAIL PROTECTED]> wrote: > > > A full frequency scan would be harsh, as we have (top of my head) 50 > > channels in the UK, with a potential of 3 sub channels at say 5 seconds > > per channel. Gives 50*3*5 = 750 seconds. > > It's 21-69 isn't it, which is 49 channels, but close enough. Only out by 15 seconds :)
> > The old ONDigital boxes did use to warn that it might take 20 minutes > to do the scan although it never did. > > > I wish I knew how STB's really did this kind of stuff. I suspect that > > because it's propriety hardware they can do more stuff. or maybe we just > > need a better mechanism for detecting lack of lock in the scan case. > > Well given that the UK muxes transmit a network table you only have > to find one frequency by scanning and you can then locate the others > using the network table so maybe they do that? > Which is what we do. But the pathological case is still not good. I'll have to have a play about with it sometime. -- John
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