[opendtv] Why can't POSTAGE STAMPS be Eliminated???
- From: Richard Hollandsworth <holl_ands@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Thu, 18 May 2006 18:27:52 -0700 (PDT)
Why must Letterboxed programs (e.g. Widescreen 720x480 DVDs) be transmitted as
a 360x480 "Postage Stamp" within the SD 640x480 4:3 box?
Why can't they be transmitted in either 720x480 (currently in SCTE specs) or as
"SD-Lite" 704x480 (currently in both SCTE and ATSC specs)?
Surely the Encoding equipment is capable of handling this resolution
setting.....
An HD-STB/DVR (whether built to ATSC or SCTE specs) should be capable of
accepting this format without modification, filling up the screen on a 16:9
HDTV.....and "shrink-to-fit" for Video/S-Video output, just as they already do
for HD.
Shouldn't a cable SD-STB also be capable of accepting widescreen
formats---after all it's one of the 480 formats in the SCTE specs???
If not, wouldn't it be a viable software-only upgrade???
=============================================
ATSC Candidate Standard CS-TSG-674 proposes revising Table A3 in ATSC A/53
Annex A to (finally) include the 720x480
widescreen SD resolution, indicating that it has been in use for several years
with any reported complaints.
So there may not even be a need to down-rez ATSC to "SD-Lite" 704x480.
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