Comments on: googleartproject.com – this is why we need Quad HD screens and projectors http://armdevices.net/2011/02/01/googleartproject-com-this-is-why-we-need-quad-hd-screens-and-projectors/ Blog on ARM Powered® devices Sun, 20 May 2012 12:41:39 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: Anonymous http://armdevices.net/2011/02/01/googleartproject-com-this-is-why-we-need-quad-hd-screens-and-projectors/comment-page-1/#comment-7868 Anonymous Wed, 02 Feb 2011 12:51:00 +0000 http://armdevices.net/?p=4381#comment-7868 Great idea, with Google Art Project so all people can see art in Art museum all over the world in their home or mobile device. But 4K DLP as the State-of-art tech for digital cinemas have problems to.DLP tech have problems with "bleeding of too much light" in movies and with better resolution this will be seen easier for everyone. Texas Instruments DLP tech wich use the DMD=Digital Micromirror Device which is aluminium plate which is made in some process as integrated circuits with acid liquids.Every pixel have one micromirror wich is 16my small, micromirror made of aluminium is too good as reflexive material and DLP tech have problems with especially light grey and light blue surfaces wich is "bleeding" of too much light.JVC D-ILA och Sony SXRD wich is using Liquid crystalls as pixels on single crystal silicon wich is grey and highly reflexive like a mirror or aluminium.But one big problem with Liquid crystals on single crystal silicon substrate is that the strong light source in a cinema projector dose not reflect the light from the pixel substrate as the micromirror aluminium in the DLP process.So the Liquid crystal on single silicon substrate is becoming very heated by the strong light source and can easy be overheated.That is why DLP processing have been the State-of-art tech for digital cinemas. But the DLP processing is not without any problems too, "bleeding" of too much light is one big problem wich is well knowned and with even better resolution than 2K this will be a much bigger problem than 3D. Great idea, with Google Art Project so all people can see art in Art museum all over the world in their home or mobile device.
But 4K DLP as the State-of-art tech for digital cinemas have problems to.DLP tech have problems with “bleeding of too much light” in movies and with better resolution this will be seen easier for everyone.
Texas Instruments DLP tech wich use the DMD=Digital Micromirror Device which is aluminium plate which is made in some process as integrated circuits with acid liquids.Every pixel have one micromirror wich is 16my small, micromirror made of aluminium is too good as reflexive material and DLP tech have problems with especially light grey and light blue surfaces wich is “bleeding” of too much light.JVC D-ILA och Sony SXRD wich is using Liquid crystalls as pixels on single crystal silicon wich is grey and highly reflexive like a mirror or aluminium.But one big problem with Liquid crystals on single crystal silicon substrate is that the strong light source in a cinema projector dose not reflect the light from the pixel substrate as the micromirror aluminium in the DLP process.So the Liquid crystal on single silicon substrate is becoming very heated by the strong light source and can easy be overheated.That is why DLP processing have been the State-of-art tech for digital cinemas.
But the DLP processing is not without any problems too, “bleeding” of too much light is one big problem wich is well knowned and with even better resolution than 2K this will be a much bigger problem than 3D.

]]> By: Charbax http://armdevices.net/2011/02/01/googleartproject-com-this-is-why-we-need-quad-hd-screens-and-projectors/comment-page-1/#comment-7866 Charbax Tue, 01 Feb 2011 18:55:00 +0000 http://armdevices.net/?p=4381#comment-7866 Quad HD means people will approach the screen to enjoy the details. Just like at an art gallery, people dont enjoy the art from far away, but they walk up to it and stare at it from 2 meters distance or less. The Quad HD screen becomes the dynamic gallery right in your living room, might want to be hanged a bit higher on the living room wall so it can be enjoyed while standing. I believe that one can see higher than 1080p on HDTV starting below 50″ sizes. The iPhone 4 has a 326DPI 3.5″ screen. I don’t see why we can’t get higher DPI on our HDTVs than 52DPI on a 42″ HDTV? Why should the iPhone 4 have a 6x higher DPI than my 42″ 1080p Full HD HDTV? If they were to put 4K processor in my 42″ HDTV, it would still “only” have a 111DPI, still much less than what they have done on the iPhone 4. Sure my 42″ HDTV has 132 times larger surface area than an iPhone (a 42″ HDTV could fit 132 of iPhone’s screens), if you want to set a standard for what the DPI per field of vision should be based on the iPhone 4 held at half arms length (50cm) with 326DPI screen, then a 42″ HDTV with 4K screen of 111DPI would need to be seen within 1.5 meters of a distance to get the same effect. Usually a sofa is placed 4-6 meters away from the LCD HDTV. Perhaps people will want to sit closer to the screen to experience something closer to 4K quality. At the photo exhibitions and museums of paintings, it is common for people to approach the images at distances closer than 1 meter to appreciate the details in the image. Perhaps 4K would be more suitable sizes above 50″ and preferably perhaps even above 60″ in diagonal. 67″ 4K HDTV would have a 70DPI thus achieve same pixels per angle of view at 2.5 meters distance. 65″ 1080p HDTV is $2500 today at Best Buy, how much more would it cost to include the latest 4K processor in there to stream 4K contents from Youtube 4K? Perhaps 4K HDTVs in the living room can be displaying any of our existing 12megapixel images taken with any recent digital photo camera, slideshows on a 4K screen look awesome. Thus Picasa could be streaming out some amazing customized and personalized slideshows, to be marvelled at in the living room at closer distance than usual. Quad HD means people will approach the screen to enjoy the details. Just like at an art gallery, people dont enjoy the art from far away, but they walk up to it and stare at it from 2 meters distance or less. The Quad HD screen becomes the dynamic gallery right in your living room, might want to be hanged a bit higher on the living room wall so it can be enjoyed while standing.

I believe that one can see higher than 1080p on HDTV starting below 50″ sizes. The iPhone 4 has a 326DPI 3.5″ screen. I don’t see why we can’t get higher DPI on our HDTVs than 52DPI on a 42″ HDTV? Why should the iPhone 4 have a 6x higher DPI than my 42″ 1080p Full HD HDTV? If they were to put 4K processor in my 42″ HDTV, it would still “only” have a 111DPI, still much less than what they have done on the iPhone 4. Sure my 42″ HDTV has 132 times larger surface area than an iPhone (a 42″ HDTV could fit 132 of iPhone’s screens), if you want to set a standard for what the DPI per field of vision should be based on the iPhone 4 held at half arms length (50cm) with 326DPI screen, then a 42″ HDTV with 4K screen of 111DPI would need to be seen within 1.5 meters of a distance to get the same effect. Usually a sofa is placed 4-6 meters away from the LCD HDTV. Perhaps people will want to sit closer to the screen to experience something closer to 4K quality. At the photo exhibitions and museums of paintings, it is common for people to approach the images at distances closer than 1 meter to appreciate the details in the image. Perhaps 4K would be more suitable sizes above 50″ and preferably perhaps even above 60″ in diagonal. 67″ 4K HDTV would have a 70DPI thus achieve same pixels per angle of view at 2.5 meters distance. 65″ 1080p HDTV is $2500 today at Best Buy, how much more would it cost to include the latest 4K processor in there to stream 4K contents from Youtube 4K? Perhaps 4K HDTVs in the living room can be displaying any of our existing 12megapixel images taken with any recent digital photo camera, slideshows on a 4K screen look awesome. Thus Picasa could be streaming out some amazing customized and personalized slideshows, to be marvelled at in the living room at closer distance than usual.

]]> By: Bob http://armdevices.net/2011/02/01/googleartproject-com-this-is-why-we-need-quad-hd-screens-and-projectors/comment-page-1/#comment-7865 Bob Tue, 01 Feb 2011 18:46:00 +0000 http://armdevices.net/?p=4381#comment-7865 I run a slideshow screensaver of fine art on my 42" screen and it's fantastic. There's a formula that says 1080p on a 55" to 65" screen in an average living room meets the maximum detail the human eye can discern (at 1080p, sitting distance should be 1.5X screen size). ...So I'm not really sure if QuadHD is justifiable outside of a movie theater. I'm sure it looks great if you stare at it up close but if you're just trying to sit back and enjoy then 1080p, just like mp3, is viewed by most people as "good enough." I still have a VERY hard time telling between 720p and 1080p without checking the on-screen menu and my distance vision is great. I run a slideshow screensaver of fine art on my 42″ screen and it’s fantastic. There’s a formula that says 1080p on a 55″ to 65″ screen in an average living room meets the maximum detail the human eye can discern (at 1080p, sitting distance should be 1.5X screen size). …So I’m not really sure if QuadHD is justifiable outside of a movie theater. I’m sure it looks great if you stare at it up close but if you’re just trying to sit back and enjoy then 1080p, just like mp3, is viewed by most people as “good enough.” I still have a VERY hard time telling between 720p and 1080p without checking the on-screen menu and my distance vision is great.

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