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<blockquote data-quote="spiney" data-source="post: 179789" data-attributes="member: 192438"><p>er, mlj, just for info ......</p><p></p><p>Original analogue HD system was hi vision, developed by NHK.</p><p></p><p>Eureka was a multi-platform project, the particuar HDTV system was HD-MAC.</p><p></p><p>1st HD proposal in Europe was E Pal from the BBC, using a 2nd PAL channel to transmit "futher lines", allowing a 1250 line fully backwards-compatible picture. But the "BBC satellite project" collapsed, around 1985-ish.</p><p></p><p>PAL+ was just a widescreen format transmitted via ordinary PAL, prior to digital tv, and not in any way HD.</p><p></p><p>The USA ATSC "project" had - at one time - lots of different competing systems, what's now called "atsc" - in fact 8vsb - was originally just a hi def "helper" signal underlying the still-there complete NTSC analogue signal.</p><p></p><p>For more details, see my HDTV primer.</p></blockquote><p></p>
[QUOTE="spiney, post: 179789, member: 192438"] er, mlj, just for info ...... Original analogue HD system was hi vision, developed by NHK. Eureka was a multi-platform project, the particuar HDTV system was HD-MAC. 1st HD proposal in Europe was E Pal from the BBC, using a 2nd PAL channel to transmit "futher lines", allowing a 1250 line fully backwards-compatible picture. But the "BBC satellite project" collapsed, around 1985-ish. PAL+ was just a widescreen format transmitted via ordinary PAL, prior to digital tv, and not in any way HD. The USA ATSC "project" had - at one time - lots of different competing systems, what's now called "atsc" - in fact 8vsb - was originally just a hi def "helper" signal underlying the still-there complete NTSC analogue signal. For more details, see my HDTV primer. [/QUOTE]
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