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Thursday – 9 September: Â Today is the first day the CEDIA trade floor is open and several companies are officially introducing new projectors and related products today. Â I will be updating this blog a few times today, so check back.
Wednesday – 5 September: Â The CEDIA Expo 2012 trade show officially started today with the keynote address, but the trade exhibits don’t open until tomorrow (Thursday, 6 Sept.). Â However, there are a few news items from today.
This blog is a final preview before the start of the CEDIA Expo show that is held next week in Indianapolis (the CEDIA keynote speech and first press conferences are on Wednesday Sept. 5th and the trade show opens Sept. 6th).Â My previous blog included several video projector related products rumored to be making their appearance at CEDIA.Â For this new blog I will only cover those projectors for which their manufacturer has already released some information.
This blog presents a preview of new projectors and a few related products that may be introduced and/or demoâed at next monthâs CEDIA Expo 2012. Â The CEDIA Expo is the most important trade show in the USA for the introduction of new home theater video projectors and related products. Â Also included below are some products that may come to the marketplace during the next few months, but the manufacturer does not have an exhibit/booth at the CEDIA Expo.Â In some cases the product information that I discuss below is based the preliminary information from the manufacturer while for some other products the information below is based on what appears to fairly credible rumors.Â In the following write-up I have tried to clearly identify the rumors from the more firm information.
The current generation of the HDMI (High Definition Multimedia Interface) specification was issued in early 2010, in the same time frame as the specification for Blu-ray 3D players (which specifies a HDMI 1.4a output).Â The latest version of the HDMI Specification is v1.4b which is functionally the same as v1.4a, but with the addition of testing requirements to be used by manufacturers to certify compliance with the specification.Â Most current consumer video devices include support for the HDMI v.1.4a.Â I provided an overview of the HDMI v1.4a provisions related to 3D video in my very first blog (HERE) for Projector Reviews.
This blog provides a wrap-up to the discussion of my past 9 blogs on the subject of Passive 3D Projection.Â Most of that discussion focused on using two consumer projectors operating in 2D mode and configured with auxiliary equipment/components such that one projector is used for the right-eye view and the second projector is used for the left-eye view as required to present a stereoscopic 3D image when viewed thru passive 3D glasses.Â This final blog in the series on passive 3D projection discusses a single projector solution for implementing a passive 3D projection system.
This post is Part 9 in a the series of blogs discussing do-it-yourself (diy) passive 3D projection systems that use two conventional front projectors.Â This new blog continues the discussion on the use of dual projection system that use color bandpass filtering (i.e.,Â âwavelength multiplexingâ), instead of polarization, as the means to separate the right from the left images.Â In simply terms, wavelength multiplexing, uses two projectors equipped with filters that pass only very narrow bands of colors within the visible spectrum with one of the filters passing a set of colors that is slightly offset from the set of colors passed by the filter being used on the second projector.Â The viewers then must wear passive 3D glasses whose lenses are filters that pass narrow bands of the visible spectrum that matches those being used on the two projectors.
This post continues the series of blogs discussing do-it-yourself (diy) passive 3D projection systems that use two conventional front projectors.Â In my previous blogs of this series the discussion has focused on passive 3D projection system that use polarized light as the means to separate the right from the left images that make up the stereoscopic image pair that creates the 3D effect.Â This new blog starts the discussion on the use of dual projector system that uses color bandpass filtering (i.e.,Â âwavelength multiplexingâ), instead of polarization, as the means to separate the right from the left images.Â In simply terms, wavelength multiplexing, uses two projectors equipped with filters that pass only very narrow bands of colors within the visible spectrum with one of the filters passing a set of colors that is slightly offset in wavelength from the set of colors passed by the filter being used on the second projector.Â The viewers then must wear passive 3D glasses whose lenses are filters that pass narrow bands of the visible spectrum that matches those being used on the two projectors.
This post continues the series of blogs discussing do-it-yourself (diy) passive 3D projection systems that use two conventional front projectors.Â In my previous blog (i.e., Part 6 of this series), I completed (at least for the time being) the discussion on projectors suitable for use as part of a passive 3D projection system that uses polarized light as the means to separate the right from the left images that make up the stereoscopic image pair that creates the 3D effect.Â This new blog wraps up the current discussion on passive 3D projection systems that use polarized light.
This blog post continues the discussion of do-it-yourself (diy) passive 3D projection systems that use two conventional front projectors.Â In my previous blog (i.e., Part 5 of this series), I discussed using projectors that inherently project polarized light as well as the role of external filters needed for use with such projectors.Â For this new blog, I will address one comment received to that previous blog as well as continue the discussion on passive 3D projection systems that uses polarization as the means to separate the right from the left images that make up the stereoscopic image pair that creates the 3D effect.
This is Part 5 of a series of blogs discussing passive 3D projection systems.
For these blogs I am focused on passive 3D systems that use polarization as the means to separate the right from the left images.Â Previously I discussed (in Part 3 â HERE) the role of the 3D Source, the 2-way HDMI Splitter and the 3D Processors.Â In my most recent blog (Part 4 â HERE) I discussed the different types of polarization, sources for polarizing filters, and projectors with non-polarized light output. Also in these earlier blogs I discussed some general characteristics to consider when selecting the projectors to be use for a do-it-yourself (diy), dual projector passive 3D setup.Â For this 5th installment of this series, I am discussing the use of projectors that inherently project polarized light and how these can be used in a diy 3D passive linear polarized dual projector system.
This is Part 4 of a series of blogs discussing passive 3D projection systems.
The current discussion is focused on passive 3D systems that use polarization as the means to separate the right from the left images.Â Previously I discussed (in Part 3 â HERE) the role of the 3D Source, the 2-way HDMI Splitter and the 3D Processors.Â Also in that earlier blog I discussed some general characteristics to consider when selecting the projectors to be used for a do-it-yourself (diy), dual projector passive 3D setup.Â For this part of the series I continue the discussion by providing specific details for making the selection of a suitable pair of projectors.
This blog is a continuation of my previous discussion on passive 3D projection (HERE).Â Â Specifically, this blog is focused on do-it-yourself (DIY) dual projector passive 3D projection systems using polarization as the technique to separate the right from the left images.Â Future blogs will discuss DIY 3D passive dual projector systems using other technologies.
This blog is part 2 of a series on passive 3D projection.Â Part 1 was posted HERE.Â In this new blog I begin with a discussion of passive 3D projection systems for a home theater that is not specific to either of the alternative passive technologies for 3D (see my previous Blog for a discussion these alternative technologies).Â After this initial discussion I move on to more specifics on using polarization as the means to separate the right and left image pairs that make up the stereoscopic (i.e., 3D) image.
This Blog starts a discussion on passive 3D projection systems.Â I expect this discussion will continue over several future blogs.Â For this initial blog I present some of the fundamentals of passive 3D projection.Â This is intended to prepare the reader for more in-depth discussions of the alternative technologies and descriptions of do-it-yourself (i.e., DIY) dual projector passive 3D projection setups.
This Blog is a follow-up to my two earlier blogs ofÂ December 14th and December 19th on 3D crosstalk (i.e., 3D ghosting).Â In the second of those previous blogs I presented some results for 3D crosstalk measurements taken for my own JVC DLA-RS40 projector.Â I have now taken one critical additional measurement for that projector plus also present results from my testing of an Epson Home Cinema 5010 projector.Â This is physically the same Epson projector Art used for his review HERE at Projector Reviews.Â I have done a visual comparison of the 3D crosstalk levels using full resolution 1080p 3D material (input to the projector at 24Hz using the Blu-ray 3D standard frame packing signal format) and also half resolution 3D programming via DirecTV (provided from my DirecTV HD-DVR in 1080i/60 3D side-by-side format).Â Â For my 3D crosstalk measurements I used a Blu-ray 3D test disc which I have created (i.e., in full resolution 1080p at 24Hz in the frame packing format, as per the Blu-ray 3D standard).
This blog offers a preview of some products being introduced at the 2012 International Consumer Electronics Show (CES) being held this week (Jan. 10-13) in Las Vegas.Â The products discussed below are limited to only those that have been announced in advance of the Tuesday (Jan. 10th) start of the show.Â While CES traditionally is not the primary trade show for the introduction of new home theater oriented projectors (CEDIA in the USA and IFA in Europe are where most manufacturers introduce new home theater projectors), it is the premier trade show for the introduction of most other consumer electronics products.Â This includes new flat panel HDTVs, Audio/Video Receiver, Speakers, etc., as well at computers, networks, smart phones, automotive electronics, and many electronic gadgets.Â Art (from Projector Reviews) is attending the CES and will be reporting via Podcast (Info HERE and the Podcast site it HERE) on projector related (home theater or business) products being introduced at the show.
This blog is a continuation of my previous blog (HERE) of December 14, 2011 on â3D Crosstalk/Ghosting â Part 1â and also is a follow-up to my earlier blogs discussing screens for 3D projection (i.e., blogs from August 19th,Â August 31st, and December 1st.Â Â Â For the continuing discussion from my most recent blog on 3D Crosstalk, I have now completed measurements of the 3D crosstalk level from my JVC DLA-RS40 projector and for the further discussion on screens for 3D projection I have taken a quick look at sample âsilver screenâ materials from both Stewart and Da-lite that are being marketed for use with passive 3D projection systems, that use polarization for their 3D separation, as well as suitable to 2D projection.
For this Blog (and the next) I will focus on the subject of 3D crosstalk, or frequently called 3D ghosting.Â This undesired effect occurs when portions of the image intended to be seen by one eye become visible to the other eye.Â This âleakageâ of information between the right and left visual channels may occur with virtually any 3D display technology, but certain display/projection technologies are more prone to have a level of 3D crosstalk that rises to the point of being objectionable for most viewers.Â For this initial blog (i.e., Part 1) on the subject of 3D crosstalk, I will discuss the principle sources for 3D crosstalk for both active 3D and passive 3D projection system and in Part 2 (i.e., my next blog) I will provide, as an example, results from testing 3D crosstalk on my own JVC DLA-RS40 projector.
First Take on Stewart “Reflections Active 170″ Screen
December 1, 2011 -
For this blog I will be discussing a new front projection screen material being marketed specifically for use with 3D projectors.Â I will taking a look at the new Stewart Filmscreen Relections Active 170TM screen material with a rated gain of 1.7.Â Screens using this material are being sold for use with 3D projectors that use active shutter 3D glasses.Â Stewart also offers a screen material called 5D (more on that in a future blog) that is marketed for use with passive 3D projection systems.Â Â This blog reports on testing of sample of the screen material (actually a less than 1 square foot sample and not an entire screen).Â For reference a sample of Stewartâs well regarded StudioTek 100TM screen material (gain 1.0) was used.