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From: tim@hpfcla.UUCP
Newsgroups: net.misc
Subject: Re: TV & VCR standards
Message-ID: <11600009@hpfclp.UUCP>
Date: Fri, 17-Jan-86 16:48:00 EST
Article-I.D.: hpfclp.11600009
Posted: Fri Jan 17 16:48:00 1986
Date-Received: Thu, 23-Jan-86 08:37:35 EST
References: <137@daisy.UUCP>
Organization: 17 Jan 86 14:48:00 MST
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There was an article about world TV standards in 'VIDEO' magazine a few
years back (2-3?).  It talked about the variations and how some of the 
standards where 'semi' compatable - like a PAL B/W from U.K. can be watched
on a NTSC set but there is no sound (or something like that).  

Tapes are in effect 'images' of the normal broadcast signal.  So most European
tapes would have 50hz frame rates (vs 60hz for the U.S.).  Most European 
also have 625 lines vs U.S. 525 lines.  

There is currently some industrial tape equipment that records the video 
signal digitally.  After the tape deck reads this digital signal, it can 
be transformed into PAL or NTSC or whatever.  This equipment is a long 
way away from being available from be consumer available.

Tim Mikkelsen
hplabs!hpfcla!tim