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LCD screen res & 1080? |
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#1 |
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Forum Member
Join Date: Jan 2002
Location: Kent
Posts: 559
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LCD screen res & 1080?
It seems that many LCD TVs available now, including top of the range 40" Sony, are only 1366 x 768.
Surely this is completely useless for showing 1920x1080. Anyway, 720 is not much better than the current PAL SD. So is there any point getting HD. Perhaps DS should be known as HD & HD+, or somethign similar. So many TVs are now labelled "HD Ready", and are 768 lines. Seems like a very big marketing campaign going on at the moment. Also it would have been the ideal time to get rid of this NTSC Vs PAL issue. |
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#2 |
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Join Date: Jan 2002
Location: Ilkeston
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Completely useless, nope it just means the higher broadcast res is scaled down to the native res of the panel.
720p if you take the linear specs isn't overly impressive but the number of pixels used to generate the image is doubled and it's a progressive format by design. The HD Ready spec was created to offer a baseline for consumers looking to buy HD displays that could handle what the manufacturers/broadcasters and regulators consider HD. It would have been great to see every display at 1920*1080 but technology develops over time and if the content providors had waited for commercial viable panels at that resolution we wouldn't be getting HD this year and the US, Japan etc would not have had it years ago. You've got to start somewhere but of course if you wait a year or so then a 1920*1080 panel that accepts 1080p input may be in your price bracket. It's not perfect but it's a palce to start and isn't so much better to have such a universal standard when compared to the upcoming format war for blue laser players ![]() NTSC and PAL are not a factor in HD broadcasting. There are however 50hz and 60hz issues with certain countries favouring one or the other, simply put there were too many issues surrounding these differences to make a global single spec format a reality. |
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#3 |
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Join Date: Jul 2003
Posts: 813
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Quote:
Originally Posted by Bruce
Anyway, 720 is not much better than the current PAL SD.
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#4 |
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Join Date: Nov 2003
Posts: 1,770
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A few stats:
SDTV = 720 x 288 x 50 = 10 million pixels per second 720p = 1280 x 720 x 50 = 46 million pixels per second 1080i = 1920 x 540 x 50 = 51 million pixels per second As you can see 720p is a huge step up in resolution from 576i SDTV. |
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#5 |
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Join Date: Jul 2003
Posts: 813
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Shouldn't SD and 1080i be 25 rather than 50?
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#6 |
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Join Date: May 2004
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Quote:
Originally Posted by camaj
Shouldn't SD and 1080i be 25 rather than 50?
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#7 |
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Join Date: Sep 2003
Location: London
Posts: 3,638
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Just to clear up:
PAL or SD is 576 lines high at 25 frames per second interlaced. This is actually 50 fields per second at 288 lines per field. 720p is 720 lines every frame, at 50 frames per second 1080i is 1080 lines at 25 frames per second interlaced, actually 540 lines per field at 50 fields per second. There is also no NTSC vs PAL issue, as all HD sets should (note the should!) be capable of displaying at least 720p at 50 or 60 frames per second. (There is in fact a huge raft of HD standard picture sizes and frame rates, not least of which is a 24 frames per second film mode!) |
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#8 |
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Join Date: Jan 2002
Location: Kent
Posts: 559
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OK, a 50 frames per second picture will be better than 25. But 720 lines is still only 25% better *resolution*.
My other comment - 1366 x 768 is useless for showing 1080i Is there much point getting a 1366 x 768 TV now, just to see 1920x1080 come out next year? |
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#9 |
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Join Date: Nov 2003
Posts: 1,770
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Quote:
Originally Posted by Bruce
OK, a 50 frames per second picture will be better than 25. But 720 lines is still only 25% better *resolution*.
If SD is equal to roughly 720 x 400p, then surely 1280 x 720 is significant improvement? Never mind the vertical resolution; the horizontal resolution is almost doubled. Wait until 720p broadcasts start; then you can decide for yourself if it's any good. |
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#10 |
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Forum Member
Join Date: Jan 2002
Location: Acne Information, Acne Vulgari
Posts: 2,809
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Quote:
Originally Posted by Bruce
My other comment - 1366 x 768 is useless for showing 1080i
Is there much point getting a 1366 x 768 TV now, just to see 1920x1080 come out next year? |
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#11 |
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Join Date: Jan 2006
Posts: 43
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Wait until you see a 720 line picture
My son has just built a media PC to go with his Samsung 26" LCD TV. If the 720 line clips he has played through the set are indicative of broadcast quality you can expect something that makes regular TV, digital or otherwise, almost unwatchable. It really is that good.
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#12 |
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Join Date: Jul 2003
Posts: 813
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Quote:
Originally Posted by sanderton
Depends on your finances. 1080 screens will be out later this year, but they will be very expensive for a while at least.
Quote:
If the 720 line clips he has played through the set are indicative of broadcast quality you can expect something that makes regular TV, digital or otherwise, almost unwatchable.
Have you seen 1080 pictures? They make 720p unwatchable...... well almost
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#13 |
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Join Date: Jan 2002
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Quote:
Originally Posted by camaj
Relatively speaking they won't. The prices will be pretty similar to existing HD ready sets
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#14 |
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Join Date: Jan 2002
Location: Kent
Posts: 559
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Perhaps 1080 TVs will push down prices of 720 TVs
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#15 |
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Forum Member
Join Date: Jan 2002
Location: Ilkeston
Posts: 18,075
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Quote:
Originally Posted by Bruce
Perhaps 1080 TVs will push down prices of 720 TVs
![]() Indeed they will since the 1080p displays will occupy the premium niche and that will drive down the higher spec lower res panels which in turn squeezes the market for the middle to lower end. Lower prices as manufacturers look to gain market share and better quality panels as slightly older designs are sold onto rebadges. |
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