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From: sparks@corpane.UUCP (John Sparks)
Newsgroups: comp.graphics
Subject: Re: HDTV
Message-ID: <1612@corpane.UUCP>
Date: 19 Mar 90 17:49:26 GMT
References: <1990Mar15.202510.4924@sun.soe.clarkson.edu> <2438@milton.acs.washington.edu>
Organization: Corpane Industries, Inc., Louisville Ky
Lines: 29

mtv@milton.acs.washington.edu (David Schanen) writes:


>    For backwards compatability, why don't we just double the scan lines?

>    I don't know how the transmitters work but if we could use the existing 
>signal as part of the new signal, that would eliminate alot of expense.

>	-Dave

I think there has been some argument for this, but one problem is that
while NTSC (US standard) is 525 lines (1150 doubled for HDTV) is not the
same as PAL (European) which is 620 (somewhere around there). so doubling
that would be 1240 lines. 

It would be a lot better if the world could agree to go to ONE standard 
HDTV rather than two (NTSC and PAL). So which do you support? PAL is used
in more places than NTSC is.

One compromise was to take a common multiple of both systems and use that.
I have no idea where it stands now. But I hope they go with square pixels
because I have a feeling that HDTV will become the new computer graphics
standard also. 


-- 
John Sparks  | D.I.S.K. 24hrs 1200bps. Accessable via Starlink (Louisville KY)
sparks@corpane.UUCP <><><><><><><><><><><> D.I.S.K. ph:502/968-5401 thru -5406 
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