Posts Tagged ‘HDMI’
HDMI 2.0 Is Here…And It’s Not Fast Enough?
- Published on Wednesday, 04 September 2013 15:51
- Pete Putman
- 0 Comments
This morning, the HDMI Forum announced the release of HDMI 2.0, which was almost two years in the making. The impetus for this new standard was and continues to be 4K, which requires such increases in data rates that the older 1.4 version can’t support it, except at slow frame rates.
Now, HDMI 2.0 has a maximum data rate of 18 gigabits per second (Gb/s), slightly faster than DisplayPort’s 17.2 Gb/s. If you do the math, this should be fast enough to transport 3840×2160 video with frame rates of 50 and 60 Hz, using 8-bit and 10-bit color (at 60 Hz, the clock rate for 8-bit 4K is about 14.9 Gb/s; with 10-bit color, about 17.9 Gb/s).
Here are the highlights from the official press release:
“HDMI 2.0, which is backwards compatible with earlier versions of the HDMI specifications, significantly increases bandwidth up to 18Gb/s and adds key enhancements to support continuing market requirements for enhancing the consumer video and audio experience. New functionality includes:
- Support for 4k@50/60, (2160p: 4 times the clarity of 1080p/60 video resolution)
- Up to 32 audio channels for a multi-dimensional immersive audio experience
- Up to 1536kHz audio sample frequency for the highest audio fidelity
- Simultaneous delivery of dual video streams to multiple users on the same screen
- Simultaneous delivery of multi-stream audio to multiple users (up to 4)
- Support for the wide-angle theatrical 21:9 video aspect ratio
- Dynamic synchronization of video and audio streams
- CEC extensions provides expanded command and control of consumer electronics devices through a single control point
HDMI 2.0 does not define new cables or new connectors. Current High Speed cables (Category 2 cables) are capable of carrying the increased bandwidth.”
After reviewing the specifications, it appears to me that the HDMI Forum was trying to squeeze every last drop of speed out of the existing connector/interface architecture without having to re-engineer the standard. There’s no mention of locking connectors (a bugaboo of the broadcast and AV industries). Nor is there any discussion of speeding up HDCP key exchanges beyond what’s already been accomplished with InstaPort. But an HDMI 2.0 standard should eliminate the need for two or even four separate HDMI ports to playback 4K content (several TV and projector manufacturers currently use this approach).
Adding multiple channels of audio and increasing the sampling frequency is relatively simple stuff, as the bit rates for audio are a small fraction of those needed for 2K and 4K video. And you can already deliver two separate video streams through one HDMI connector – it’s only a bandwidth issue; the new standard just establishes a protocol for doing so. Supporting 21:9 isn’t all that big a deal, either.
I’m not sure what “dynamic synchronization of video and audio streams” means yet and will have to talk to the folks at HDMI Licensing to get a better explanation. As for CEC, it appears that control functionality has been souped-up beyond the basic command sets used to operate AV receivers and Blu-ray players.
What’s clear now is that HDMI 2.0 is NOT going to be the big breakthrough many of us analysts and writers expected, and that it will NOT be able to transport 10-bit and 12-bit 4K video running at higher frame rates (>60 Hz). Both of these specifications are necessary to develop high dynamic range (HDR) video and movie content.
Nor is there any indication of supporting a high-speed data bus overlay like Thunderbolt, which is becoming more important with the growth in popularity of tablets and smart phones, not to mention ultrabooks. These devices are leading the industry changeover to single, dense, multifunction interfaces across all sorts of CE products.
In contrast; over at VESA, they’ve already commenced development of Display Stream, a new interface that will use “light” JPEG compression to push data rates up to 25 Gb/s and beyond over conventional DisplayPort connections. This is a more “future-proof” approach to display connectivity and reflects the current state of 4K and UHDTV product and content development, what with all of the 4K television announcements that have been made this year.
But the reality is that HDMI dominates the CE marketplace and is making major inroads to commercial AV and broadcast installations. The market has largely ignored DisplayPort, despite the facts that (a) there are currently no royalties associated with its use, (b) its connectors come in many different flavors, including support for mobile and fiber optic interfaces, and (c) it already supports a high-speed data bus overlay – the 20 Gb/s Thunderbolt layer.
Maybe they’ll get it right next time..
CES 2012: ANOTHER OPENING, ANOTHER SHOW
- Published on Wednesday, 18 January 2012 12:54
- Pete Putman
- 0 Comments
There’s still a debate about whether the U.S. economy has turned the corner and is on the rebound. As far as CES 2012 attendees were concerned, that ‘corner’ is way back in the rear-view mirror! According to official CES reports, over 140,000 people flocked to the Las Vegas Convention Center for the world’s second-largest annual gadget orgy (and at least 100,000 of them were constantly waiting on the South Hall cab lines).
The show was notable for several things. First, the expanding presence of Chinese CE brands, like TCL, Changhong, Haier, and Hisense. (Never heard of them? You’re not alone.) Second, this show was Microsoft’s curtain call, as they’ve decided to go the route of Apple and stage their own product intros in the future.
Third, there was a decided pull-back on 3D (aside from LG, who made it the focus of their booth) and a renewed emphasis on ‘connected’ TVs in all shapes and flavors. And fourth, gesture recognition made a well-deserved comeback this year after being mostly an afterthought in 2011.
Overall, the show had less of a “let’s build it because we can” feel, and more of a “let’s actually make a practical gadget that people will want to buy” buzz. Still, there were the usual surprises – some were telegraphed in advance, while others showed up quite unexpectedly.
Here’s an example. Both LG and Samsung showed 55-inch organic light-emitting diode (OLED) TVs at the show. LG’s unveiling had been common knowledge, while Samsung’s was only revealed to members of the press under embargo. But both showings attracted constant crowds, as OLEDs in this size are a rare sighting!
LG’s 55-incher is supposedly a production model and will come from a new Gen 8 fab in Korea. It uses Kodak’s white OLED technology (purchased by LG a couple of years ago), with discrete red, green, blue, and white filters applied. Samsung’s approach is a bit trickier and employs discrete red, green, and blue OLEDs. Both panels looked terrific, and thank goodness for LG Display’s separate, quieter and far less chaotic suite at the Bellagio, where I could examine the OLED TV more closely.
It’s hard to upstage a demo like that, but Sony almost pulled it off by showing 46-inch and 55-inch inorganic LED TVs. What’s an inorganic LED? It’s the same technology that powers those outdoor LED signs you see alongside highway and inside stadiums and arenas. Only Sony figured out a way to stuff 6.2 million small-pitch RGB LEDs into a TV, using an expensive and time-consuming wire bonding process that ensures (for now) that these products won’t come to market any time soon. But these TVs still looked spectacular and livened up what was otherwise a rather sedate Sony booth, compared to 2011 (remember that 92-foot passive 3D screen and the astronaut DJ?)
Just down the hall, Sharp left no doubts about its product marketing strategy for the next few years by showcasing a new 80-inch professional video display with touchscreen overlay. The Aquos Touch is adapted from Sharp’s 80-inch Aquos TV that launched in the fall of 2011, and complements the 70-inch product already in the line. Given that Sharp’s market share in TVs has inexplicably dwindled to the mid-single figures, this is an interesting approach – but the playing field is wide open. And the pro AV channel is very interested in large, self-contained displays that could replace traditional two-piece projector installations.
Sharp also tickled our fancy with several Freestyle “portable” LCD TVs, including models as large as 60 inches. These TVs have been designed to be as light as possible and use a WiFi-based solution to stream HD content, so you can pretty much pick ‘em up and move ‘em wherever there’s an AC outlet. (I guess that includes the garage if you want to watch a football game with your best buds and keep the noise level down…)
3D was around, but clearly took a back seat to other demos. Still, Toshiba showed several examples of 1080p and 4K autostereo 3D TVs in their booth. These demos once again required the viewer to stand in specific locations to receive the full autostereo effect, and Toshiba thoughtfully provided small green circles with arrows in them as visual cues – when both were seen, you were positioned in a ‘sweet spot.’ Toshiba has clearly walked away from active 3D and has a few passive 3D sets in their line, but it appears autostereo is their game plan for the near future. (And yes, the 4K TV looked spectacular.)
Next door, Panasonic anted up big time by showing a new line of LED-backlit LCD TVs that will be available in sizes to 55 inches, immediately casting doubts as to the company’s future plans for plasma TVs. These ET-series sets employ Panasonic’s IPS-Alpha LCD panels and I have to admit, they looked doggone good, particularly at wide viewing angles. Still, the company had plenty of plasma announcements, including faster subfield drive for improved motion rendering and even lower power consumption from the 2011 plasma lineup. For my money, plasma is still the way to go – that is, until OLED prices drop low enough.
LG is head over heels in love with 3D. That’s the only conclusion anyone could make after cruising through their booth, which featured an enormous panoramic Cinema 3D videowall (passive, of course) at the Central Hall entrance. Inside, LG’s 55-inch OLED was shown with 3D and 2D content, and a nearby exhibit showcased an 84-inch 4K 3D LCD monitor. (Sorry, it’s not for sale – yet…) 3D popped up on so many LG products that I expected the ‘smart’ washer and dryers also located in the massive exhibit to be labeled ‘Cinema 3D’ as well. (Technically speaking, you could apply film patterned retarders to the front port of the washer – oh, never mind.)
As mentioned earlier, the overwhelming presence of numerous Chinese brands at the show clearly shows which way the wind’s blowing these days. Haier brought back their clever wireless LCD TV demo from two years ago, and this version builds the inductive coupling system into the pedestal. Yes, it is completely wireless, power and all. (Amazing what you can do with a big transformer!) Elsewhere in the Haier booth, you could find a “brain wave TV” demo that was supposed to allow you to “think” of changing channels and raising/lowering volume. (It kinda worked.)
Changhong and TCL both exhibited some really sharp-looking LCD TV designs, proving that Japan and Korea don’t have any special magic in this area. All of the companies had 3D sets out for inspection with the majority using passive 3D technology, while several of the models were ‘smart’ TVs with built-in WiFi Internet connections for streaming video. No content partnerships were announced or seen, however. It’s telling that the size of these booths is getting larger with each year, while some of the Japanese TV manufacturers are slowly shrinking.
Speaking of ‘smart’ TVs, everybody had them – Sharp, LG, Samsung, Sony, Toshiba, Panasonic, Haier, TCL, Hisense, you name it. That included connected Blu-ray players. Samsung’s Apps for TV seems to be growing by leaps and bounds, and Panasonic’s Viera Connect has also added content partners. LG’s ‘smart’ TV featured a demo of the new Google TV interface, which certainly looked a lot more user-friendly that the last implementation and presented a much more logical process for searching and finding video content on the Web.
Many of the companies exhibiting at CES used Rovi’s Total Guide EPG (or variations of it) to search out and find Web video content, as well as more traditional sources like cable, satellite, and even broadcast TV. Rovi has ported their guide to every possible platform and in their suite at Caesar’s Palace, showed implementations on set-top boxes, tablets, and a variety of TVs. The company is also into ad insertion and content delivery management systems. In short, they find it, stream it, and monetize it.
How about connecting all of this stuff together? Rainbow Fish had a small booth in the rear of the South Hall, but it was worth hunting down. They are selling direct HDMI-to-fiber optic connectivity kits that use multimode fiber and require only a separate USB connection at the TV to supply 5 volt phantom power to the lasers. Everything is built into the plugs, so there’s no need for separate converter boxes.
A few booths away, 3M was hawking a new ‘unbreakable’ HDMI cable design. Its super-flat and you can fold it, bend it, twist it – in short, pretty much abuse it any way you want. But you won’t screw up the signal, as 3M’s presentation showed. There are two types of cables – one for consumer applications, and one for computers (notebooks, I guess) and 3M offers plenty of options for color-coding the cable ends. They won’t be sold directly, but through OEM partners. Marry these with the drop-forged HDMI plugs I saw at a nearby booth, and you’ve got a ‘super’ HDMI connection.
Don’t want to plug anything in? Silicon Image has rejuvenated the Wireless HD standard with its acquisition of SiBeam, and was demonstrating 60 GHz wireless HDMI connectivity from tablets and notebook computers to large TVs. Wireless HD is a close range HDMI connectivity standard that is not WiFi based, and the chipsets and associated connections can now be manufactured in sizes small enough to build into a tablet. So, who will be the first to add it to their tablet? (My vote is for the next-generation iPad.)
Over in the Hilton, the WHDI Consortium had their demos of 5 GHz wireless HDMI interfaces running on professional camcorders, tablets, notebooks (including wireless DisplayPort and wireless VGA, for some unknown reason), and TVs. Asus showed a production notebook computer with WHDI connectivity built-in, and HP is now selling a WHDI connectivity kit for computers and TVs. Atlona won a Best of CES award for its WHDI-based LinkCast wireless HDMI package. Can WHDI compete with Wireless HD? We’ll see as 2012 unfolds.
Have you ever dropped your cell phone in a pool, or in the toilet? HzO had a demonstration of their proprietary waterproofing system for handheld CE devices that showcased an iPhone merrily playing away a selection of iTunes while dunked in a fish tank for several hours. Other phones that had been ‘treated’ also took a dive. Waterproofing was a big thing at CES, as I spotted several tanks full of phones, camcorders, and still cameras.
I mentioned gesture recognition earlier. PrimeSense, the company behind Microsoft’s Kinect Xbox motion recognition system, had an impressive demo of gesture recognition in the South Hall, and has licensed an add-on MS package to Asus called Xtion. A dancer in the booth kept things hopping with a ‘60s psychedelic imaging sequence that triggered all kinds of ‘trippy’ graphics and was fun to watch for a few minutes.
Over in the Samsung booth, crowds lined up for the most impressive MS demo. Samsung’s implementation also incorporates voice and facial recognition, taking and storing a picture of each user with a top-mounted camera. The command “Hi, TV!” activates a menu bar along the bottom of the screen, and the user can then command channel and volume changes on the TV as well as navigate menus and delve into Samsung’s ‘smart’ TV system. Hand gestures are also used to raise and lower volume and navigate up/down through channels.
Variations of gesture recognition were also seen in the LG and Haier booths, as well as by specialty manufacturers. Some systems require the use of a wand to control the TV; others simply rely on broad gestures – Haier’s demo had a fellow actually boxing in sync with the video game, and I was afraid he was going to deck himself at some point!
Other cool products at the show included Sharp’s 8K-resolution LCD TV, Victorinox’ 16 GB USB Swiss Army Knife (I kid you not), Belkin’s four-port ScreenCast wireless HDMI transmitter/receiver, Duracell’s cordless smart phone charging system (yes, it really works), Ford’s cloud-connected EVO concept car with personal health sensor monitoring, LG Display’s Art TV concept design, JVC’s new 4K camcorder for $4,000, BenQ’s new LCD monitors for gamers with instant picture setting changes, and Silicon Images’ demo of 3D mobile high-definition link (MHL) connectivity that resulted in the first TV screen I’ve ever seen with “airplane mode” on it.
I’d be remiss by not commenting on one legendary company’s presence at the show. As many readers know, Kodak has been in a death spiral for the past decade as its core film business fades away and digital imaging takes over. The company recently received a warning from the New York Stock Exchange that it might be delisted (last time I checked, shares were selling at about 61 cents) and it is about to file for Chapter 11 bankruptcy protection in order to auction off its patents in digital imaging.
So what the heck was the Great Yellow Father showing in that enormous booth in the upper South Hall? Why, its line of color inkjet printers, of course! Supposedly, color inkjets will be the salvation of Kodak, or at least that’s what the current management (ex-HP) tells us. Only problem is, Kodak’s market share in inkjet printers for 2011 was less than 5%, and they’re fast running out of cash for day-to-day operations.
Somehow, Kodak’s long-time competitor Fuji managed to support both film-based and digital imaging and not drive over a cliff. At CES, they showed a new 16-megapixel digital camera system with interchangeable lenses, upgraded their line of point-and-shoots, expanded the FinePix digital camera offerings, and continue to market a clever 3D digital camera. (Maybe Kodak ought to hire some of the Fuji guys…)
I’ll have more coverage of CES 2012 during my annual Super Tuesday Technology Trends presentation at InfoComm 2012 this coming June in Las Vegas. See you there!
SMPTE Philadelphia Chapter: Dealing with Consumer Display Interfaces in a Professional World
- Published on Thursday, 01 September 2011 13:47
- Pete Putman
- 0 Comments
SMPTE Philadelphia Chapter
September 2011 Meeting
Independence Mall (5th and Race Streets)
RSVP: email@example.com, 215-351-1270
SMPTE 2011 Technical Conference: Dealing with Consumer Display Interfaces in a Professional World
- Published on Friday, 29 July 2011 11:47
- Pete Putman
- 0 Comments
2011 SMPTE Technical Conference & Exhibition
3:00 PM, Tuesday, October 25, 2011
Renaissance Hollywood Hotel
1755 North Highland Avenue
Hollywood, CA 90028
Product Review: Mitsubishi HC9000 Diamond 3D Projector
- Published on Thursday, 07 July 2011 13:00
- Pete Putman
- 0 Comments
While 3D TVs have been available for over a year, the first crop of 3D front projectors are shipping now. The models I’m aware of use either digital light processing (DLP) or liquid crystal on silicon (LCoS) imaging technologies, and all of them are engineered to operate with active shutter glasses, with the exception of LG’s $15,000 CF3D, which works with passive eyewear.
Mitsubishi’s HC9000D has been in development for the better part of a year, and I had the chance to see it in the prototype stage a few times prior to this review. Those earlier versions were underpowered, making the 3D footage they projected unusually dark.
Now, Mitsubishi has started shipping a fully-powered chassis with some interesting bells and whistles inside. It comes with power zoom, focus, and lens shift, plus multi-step gamma correction and a two-position IR emitter for synchronizing its active shutter glasses.
OUT OF THE BOX
This is not a small projector, nor is it particularly light at 32 pounds. But it does have that cool gloss black finish that disappears into the darkness, plus an aerodynamic housing with all of the connectors along the left side, and not in the back.
The imaging engine for the HC9000D may be a surprise to you: It uses three .61” SXRD LCoS chips, just like the previously-mentioned LG CF3D and of course, both of Sony’s 3D front projector offerings. This is Mitsubishi’s first foray into reflective imaging, and LCoS offers a much lower cost than 3-chip DLP engines.
3D projectors need lots of light to overcome all of the polarization losses in active shutter glasses, so Mits has equipped the HC9000D with a 230-watt short-arc lamp. The supplied zoom lens has a ratio of 1.8:1, adequate for any home theater set-up as it easily lit up my Da-Lite Affinity 92” screen at a distance of 12 feet.
The input connectors include a pair of HDMI 1.4a inputs that also support ten different standard digital computer resolutions, and there’s also an analog VGA PC input connector for everything from 640×480 to 1080p/60. Mitsubishi has also provided a single component video (YPbPr) input, plus composite and S-video jacks. (Question: Why are manufacturers still supporting composite video on high-end 1080p projectors?)
The interface panel is rounded out by a pair of 12V triggers for powered screens and anamorphic lens adapters, an RS-232 jack for remote control, and another DIN jack that connects to the EY-3D-EMT1 IR emitter through a short (1 meter) or long (15 meter) cable. The emitter can be attached to the lower front panel of the projector, or positioned under your projection screen.
The supplied remote control is identical in function to all previous Mits remotes (I inadvertently turned on my Mits HC6000 a few times with it), except that it has a black housing. You can directly access any input, jump to preset picture modes, operate the powered lens functions, and step through the iris settings. The only exception is that the STANDBY button now toggles between 2D and 3D display modes.
MENUS AND ADJUSTMENTS
Mitsubishi 3LCD projectors are known for high image quality and part of the reason is the detailed menus provided for in-depth calibrations. That protocol continues with the LCoS-powered HC9000D. Four different picture preset modes (Cinema, Video, 3D, Dynamic) are provided for viewing, along with three USER memory slots.
Gamma correction is also possible through five presets (Cinema, 2.0, 2.1, 2.2, 3D, and USER), and the USER gamma adjustments offer detailed adjustments of white, red, green, and blue at 15 grayscale steps. That is a tremendous amount of tweaking at your fingertips, if you are that fanatical about precise gamma response.
Color temperature and white balance adjustments are also available for each USER mode, or you can select from one of six presets, including 5800K, 6000K, and 6500K. None of these are completely accurate, but will get you into the ballpark. There are also a set of color management controls for all six primaries that I suggest you avoid playing with, as they don’t exactly work as intended in their current implementation.
The menu complement is rounded out with three different levels of black set-up (0, 3.75, and 7.5 IRE), a ‘cinema filter,’ 3:2 frame rate conversion or ‘true’ (native) frame rate selections, and various adjustments for noise reduction and detail enhancement. The former will soften the image to hide digital noise artifacts, while the latter may enhance edge transitions too much. I’d leave ‘em both off if possible.
The HC9000D also has image warping software (referred to in the owner’s manual as ‘Anyplace’ control) built-in. It lets you re-map the pixels on a projected image to correct for off-axis projection, such as a severe high and wide angle. While it works quite well, it does impact image resolution as it decimates pixels to correct for trapezoidal distortion. (It can also fix lens distortions like barreling and pincushioning.)
You are much better off mounting the projector as close to the optical centerline of the screen as possible, and using the lens shift controls to move the image into position. Try to avoid any adjustments that manipulate pixels to correct for geometry!
The HDMI inputs have their own sets of tweaks. You can manually select the HDMI color depth (4:2:2, 4:4:4, or RGB), or let the projector configure it for you. There are also four different HDMI inputs modes – Auto, Standard, Enhanced, and Super White.
It’s best to leave this setting in Auto, as it will pick the correct color bit depth for each connected input. Enhanced is usually selected for PC input connections, but I have no idea what ‘Super White’ is intended to do: The manual just says, “Select when solid white occurs.” Any guesses?
There are also a few useful 3D image adjustments. The only 3D mode that is detected automatically by the HC9000D is the Blu-ray 1080p/24 frame-packing format, so called because it packs both left eye and right eye video into a single BD frame with 45 pixels of blanking for a total of 1920×2205 pixels. On the other hand, the so-called ‘frame compatible’ 3D formats (also known as ‘half-resolution’ formats) must be selected manually in the 3D menu, and include top+bottom (720p) and side-by-side (1080i).
You can compensate for light attenuation through polarization losses by boosting projector brightness in five steps, with 5.0 being the default setting. The sync pulse for active shutter glasses can also be reversed if needed in this menu. Normally, you should not need to play with either control (and as you’ll find out, a brighter screen will do you more good than the 3D brightness compensation settings!).
The last control I should point out is the ever-present Iris adjustment. Dynamic iris controls are de rigueur for LCD and LCoS projectors to drop black levels and improve contrast on low-level video content. I have never liked these adjustments because of the non-linear effect they have on gamma curves, and prefer to leave them off and just work with whatever dynamic range the projector manufacturer brought to the table – which isn’t as bad as you might think most of the time.
If you must use the iris settings, you have four different presets (Open, 3, 2, and 1), plus 18 steps of irising in the User menu. My advice? Set your black levels correctly and adjust the contrast for best dynamic range, and just live with it. In 2D mode, the black levels may be a bit higher than you’d want, but in 3D mode, you won’t see them anyway with the glasses on.
ON THE TEST BENCH: 2D
For my tests, I used a combination of SpectraCal’s CalMan V4.4 software and ColorFacts 7.5 to take all readings through Spyder 2 and Eye One Pro sensors. All of my calibrations were done in 2D mode, as I was most interested to see what the projector did to these settings when switched into 3D mode.
All 2D test patterns were generated by an AccuPel HDG4000, while my 3D test patterns were custom-created in Photoshop and played back @ 1280×720 resolution from a Toshiba M645 laptop computer, using the top+bottom frame compatible format. Additional 3D content came from Samsung’s Blu-ray test disc and 3D Blu-ray movie clips from Avatar and How to Train Your Dragon, played back on a Samsung BD-C6900.
You will be surprised at how little tweaking you’ll need to do to get a stable grayscale out of the HC9000D. After minimal calibration, I measured 2D brightness at 635 lumens with a center color temperature of 6542 degrees. That color temperature reading varied by a maximum of just 230 degrees over nine points of measurement. So far, so good!
Brightness uniformity was lower than I expected at 69% to the average corner from center, and 55% to the worst corner. That’s bordering on hot-spot territory, as 50% is a drop of one full f-stop in brightness. Contrast measurements were much better than you’d expect with the iris off, coming in at 279:1 ANSI (average) and 538:1 peak. While those numbers aren’t as impressive as what JVC’s achieved with their wire grid dichroic design, they are still respectable for any other LCoS projector.
I mentioned earlier that Mitsubishi always does a superb job with grayscale and color temperature performance. Figure 2 shows an almost-perfect 2.3 gamma curve after calibration that’s as good as any I’ve ever seen on the best projectors. (And it was measured with the iris disabled.)
The secret? Very tight tracking of red, green, and blue levels at each luminance measurement. You can see just how tight those levels track in Figure 3, which is the RGB histogram for the target color temperature setting of 6500 Kelvin.
The HC9000D has a ‘ginormous’ color gamut, which (unfortunately) cannot be dialed back accurately. That means the colors you’ll see off Blu-ray discs and other HD content will be over-saturated. The color management controls will not help you here – de-saturating a color will result in incorrect display of other secondary colors.
The correct approach is to set the exact color coordinates at the factory for RGB and CMY, based on the standard used to master the content being viewed, something very few projector manufacturers bother to do. Figures 4a-b shows the full color gamut of the projector compared to the BT.709 HDTV gamut and P3 digital cinema gamut.
ON THE TEST BENCH: 3D
All well and good – the HC9000D is a top-notch 2D projector – but what happens in 3D mode? For starters, let’s see what happens when switching from 2D mode to 3D mode with glasses off and on.
To measure the changes in brightness, I placed a Minolta CL200 directly in front of my projection screen to take an incident light reading from the projector for this test. I started with a baseline (glassless) reading of 1124 lux and a measured color temperature of 6190K – a bit on the warm side. With 3D mode enabled on the projector, but no glasses in place, the readings changed to 1137 lux (3D brightness @ 5.0) and 6093K.
After positioning Mitsubishi’s active shutter glasses in front of the CL200’s sensor, brightness readings dropped to 419 lux with a color temperature of 6576K. Finally, I turned the glasses on, and saw brightness drop to 146 lux while the measured color temperature soared to 8529K. (Switching the lamp from its normal setting into HIGH mode increased brightness slightly to 66 lux.)
That’s quite a decrease! Comparing the final 3D reading with glasses to the calibrated 2D reading without glasses, the amount of light that finally makes it to your eyes has decreased by about 87%
So, what’s the solution? You will need a higher-gain screen to enjoy 3D images from the HC9000D, as it’s just not bright enough for viewing on low-gain screens with active shutter glasses – at least, not at the projection distance I use. I dusted off an older 82” Vutec SilverStar (6.0 gain) screen, and it made a world of difference with the HC9000D.
Here’s the conundrum: A high-gain screen doesn’t match up well to the projector’s 2D mode, as it will elevate black levels. Does that suggest you’ll need two screens? Maybe not, as Stewart Filmscreens just announced a combination 2D/3D screen that’s supposedly optimized for both modes. (They call it “5D” – I kid you not!)
2D image quality is top-notch, as you’d expect with a projector using an HQV Reon processor. The adjustable frame rates are used to convert 24 fps filmed content to 96 Hz (quad refresh), while 60 Hz video is doubled to 120 Hz. Scaling of 720p content to 1080p is seamless and de-interlacing of 1080i channels showed absolutely no motion errors. The projector’s dynamic range is excellent (within the limits of its black levels) and my only complaint is that colors pop too much, for reasons I explained earlier.
You could be very happy just running this projector in 2D mode. In 3D mode, it’s a different story. Most of the content I looked at on my Affinity screen was too dark when viewed in 3D mode and exhibited desaturated colors with low contrast.
The Vutec gain screen helped considerably, but this projector needs to be cranking out at least 300 – 400 3D lumens after calibration to work with my screen type, size, and projection throw. If you reverse-engineer the numbers, that means almost 3000 lumens in calibrated 2D mode.
The best 3D scenes were observed with the daytime flying sequences in Dragon and the final attack sequences in Avatar. On the Vutec SilverStar screen, they punched up considerably with improved color saturation, and the viewing experience was quite enjoyable. The 24-96 fps frame rate conversion provides a smooth, bright image with absolutely zero flicker.
One problem I noticed was crosstalk in each lens. This popped up when the glasses were tilted even slightly, with the effect more pronounced in high-contrast scenes. For 3D to present correctly; crosstalk in the glasses has to be kept to a minimum. Otherwise, you will begin to feel eyestrain and may develop a headache after sustained viewing.
For comparison, Sony’s 3D active shutter glasses suffer from crosstalk problems because only one polarizer is used, while Samsung and Panasonic glasses use two polarizers and are much better at suppressing crosstalk. The Mitsubishi glasses also use dual polarizers, but their ‘extinction ratio’ isn’t as good as I would have expected. Figures 5a – 5d show sample 3D images where crosstalk is strongly evident and not quite as evident.
You will clearly see double images in the test patterns, but the ghosting isn’t quite as apparent with the stills from Dragon. But it is there, along the jagged rocky cliffs and other background objects. It all depends on the angle of your head – if you tilt your head to either side, the effect becomes more pronounced. Ghosting is readily apparent with credits and other high-contrast text and symbols.
Mitsubishi’s HC9000D is a top-notch 2D projector, but underpowered for 3D with low-gain screens. It calibrates quickly and performs nicely, but those calibrations will shift noticeably when viewing with 3D glasses. You’ll definitely need a gain screen with this projector for 3D content, and it might be a good idea to choose one that has a slightly warm color temperature that will offset the higher color temperature in 3D mode.
More horsepower under the hood would help. As I mentioned earlier, something in the neighborhood of 3000 lumens would be required to (a) perform a full 2D calibration and (b) provide enough illumination in 3D mode to low-gain (1.0 to 1.3) screens in the 82-inch to 102-inch range, assuming a projection distance of 10 – 12 feet.
However, if you are sitting closer to a smaller screen, then you will be in better shape: The HC9000’s measured light output after calibration should be adequate for 3D viewing on a 72-inch screen at a distance of 6 to 8 feet, as you will wind up with 3x to 4x brighter images. And you DO want to sit closer to 3D screens to get the maximum impact: My recommended seating distance is 1x to 1.3x the screen diagonal measurement. That will make the 3D images fill 50% or more of your field of view, and give you that theater-like immersive experience!