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Date:      Mon, 22 Jan 2001 10:42:32 +1030
From:      Greg Lehey <grog@lemis.com>
To:        Brad Knowles <brad.knowles@skynet.be>
Cc:        Kris Kennaway <kris@FreeBSD.ORG>, freebsd-chat@FreeBSD.ORG
Subject:   Re: VCD (was Re: cvs commit: src/sys/dev/ata atapi-cd.c)
Message-ID:  <20010122104232.M93049@wantadilla.lemis.com>
In-Reply-To: <v04220823b6912830c2f6@[10.0.1.2]>; from brad.knowles@skynet.be on Mon, Jan 22, 2001 at 01:03:12AM %2B0100
References:  <200101211447.f0LElEk04073@mobile.wemm.org> <KAECKEJJOLGHAFGGNIKMAELICAAA.res02jw5@gte.net> <20010121145018.A73989@citusc17.usc.edu> <v04220820b69121b53c13@[10.0.1.2]> <20010121155556.B75159@citusc17.usc.edu> <v04220823b6912830c2f6@[10.0.1.2]>

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On Monday, 22 January 2001 at  1:03:12 +0100, Brad Knowles wrote:
> At 3:55 PM -0800 2001/1/21, Kris Kennaway wrote:
>
>>  It's a multi-system TV which does NTSC and PAL natively. No conversion
>>  is involved (unless I tell my VCR to convert from NTSC to PAL, in
>>  which case there IS degradation)
>
> 	I've got a multi-system TV, too.  Trust me, there's always a
> "native" format, and a converted format.  Since most multi-system
> video devices seem to come from Europe, they would naturally be
> "native" PAL or SECAM format, and NTSC would be the converted
> format.

Look at the circuitry of a TV.  You have one or more decoders which
convert the incoming composite stream into RGB and sync pulses.
Beyond that point they're as system-dependent as the monitor in front
of you.  The decoders themselves are so cheap that you'd think it
would be easier to build multisystem VCRs.

> 	I'm quite certain that if I hooked up a splitter from the VCR
> or the DVD player and put the same video signal on both TVs, it
> would look better on the true native NTSC format television than
> they would on the one that has its own built-in NTSC/PAL converter.

Well, you could try, but even then it would be a comparison between
individual devices.

Greg
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