[opendtv] Re: Trial FOTA HDTV in France
- From: Mark Schubin <tvmark@xxxxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Fri, 09 Jun 2006 09:08:50 -0400
You seem to be in complete agreement with me that that 1080- and
720-line HD formats did NOT originate with ATSC or the Grand Alliance.
TTFN,
Mark
John Willkie wrote:
> Mark Schubin stated (in part)
>
> "Table 3 of Annex A is the infamous table the FCC rejected, but Table 1, the
> standardized video input formats, was not rejected. It specifies the SMPTE
> and ITU production standards on which Table 3 is based.
> That's where you'll find 1920 x 1080 and 1280 x 720."
>
> I think that you are inferring something that isn't there, Mark.
>
> Here's what the document states
>
> 9. Possible video inputs
>
> While not requi108red by this standard, there are certain television
> production standards, shown in
> Table A1, that define video formats that relate to compression formats
> specified by this standard.
>
> then, the listings of SMPTE 274M, 296M and ITU-R BT.601-4
>
> then:
>
> "The compression formats may be derived from one or more appropriate video
> input formats.
> It may be anticipated that additional video production standards will be
> developed in the future
> that extend the number of possible input formats."
>
> The list CLEARLY isn't exhaustive -- note the heading, language, and the lack
> of a mention of SDI.
>
> Also, ATSC has publicly released documents that consider 1080p60 and 704
> lines as additional possible standards for video.
>
> No where in any ATSC spec will you find a definitive list of the specified
> 'legal' video formats.
>
> The table a-3 removal, one needs to remember, was a compromise rather than
> add in the formats desired by the computer industry to the above list. When
> the ATSC didn't want to do that, the easy way out was to 'de-mandate' table
> a3.
>
> John Willkie
>
>
>
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