Category: The Front Line

3D TV at Best Buy: An afterthought?

To complete the 3D off-axis viewing tests described in my previous post, I drove to a local Best Buy store on Sunday, June 27. The actual store will remain anonymous, but is located near a major shopping mall and down the street from other big box retailers.

I figured they’d have at least one Samsung and one Panasonic 3D TV demo set up and running. However, what I found when I got there just left me shaking my head in disgust.

The Samsung 3D TV demo was set up at the edge of the Magnolia sub-store, and featured their top-of-the-line UN55C9000 LED-backlight 3D LCD TV. Best Buy had it on sale for $6,299 and the demo was running a clip from Monsters vs. Aliens from Samsung’s BD-C6900 3D Blu-ray player. A comfy couch rounded out the picture.

The demo was running nicely, except that only one pair of Samsung 3D glasses was available for viewing, and it was tethered via a long cable to a stand behind the couch. That didn’t work out so well for the four people standing there when I arrived – we were all jockeying for the same pair of glasses.

Over in the Best Buy TV aisles, I found Panasonic’s TC-P50VT20 50-inch 3D plasma on an end-of-aisle shelf with not much room around it to watch the 3D demo, and no place to sit. It was on sale for $2,199. Next to the TV was a locked plexiglass box with two pairs of Panasonic active shutter glasses, and I had to hunt down a sales associate to open the box so I could squat on my knees (not too comfortable) and watch a 3D travelogue of Rome.

What caught my eye below the Panasonic plasma was an advertised special for Samsung’s BD-C6900 Blu-ray player, even though Panasonic’s BDT-350 was clearly running the show. No one seemed to be paying any attention to this discrepancy until I pointed it out to the sales associate who procured my glasses. He then quickly yanked the sign, but didn’t replace it with another. Nor was there any mention of the specially-priced Panasonic  3D TV, glasses, and Blu-ray player ‘bundle’ to be found.

Well, that doesn’t look right…

Around the corner, there was another small theater set up, this time showcasing a Samsung 46-inch 3D LCD TV (I didn’t check to see which model). It, too, was running clips from Monsters vs. Aliens in 3D…except that the clips weren’t in 3D, they were 2D.

The fellow sitting on the leather couch behind me, watching through a pair of Samsung 3D glasses, seemed blissfully unaware of this fact until I mentioned it. I watched him fidget with the glasses for almost five minutes until I finally tipped him off, after which he tossed them on the couch and walked away in disgust, muttering “…I wondered why it didn’t look like 3D.”

I wandered back over to the Magnolia section, where a Panasonic 65-inch plasma was running a variety of HD video clips and advertising (of all things) Mitsubishi’s Laser VUE rear-projection TVs. (Wonder how Panasonic feels about that?) I was searching for the last 3D demo in the store – a Panasonic  TC-P50VT25 plasma set hanging on the wall.

Well, I found it, except that there were no 3D glasses available for viewing. But that didn’t matter as it turned out, because the TV was only showing 2D coverage of the World Cup. The irony of this was the empty Panasonic stand positioned in front of the TV with a placard that said, “You have to experience TV in 3D!” and exhorted me to try on a pair of 3D glasses to get the full Panasonic 3D experience. OK, so where were the glasses, exactly? And where was ESPN’s 3D World Cup video feed? Who dropped the ball here? (Sorry, bad pun…)

All in all, it was a pretty lame exhibition of 3D by Best Buy. Demo #1 had but a single pair of glasses available, while demo #2 was set up in a crowded area where no one could watch and you needed to pick a lock to get at the glasses. Demo #3 wasn’t even showing 3D content in the first place, and demo #4 was completely missing in action.

So…tell me, how is a consumer supposed to make an educated 3D TV buying decision under these circumstances?

Samsung and Panasonic 3D TVs: Any better than Sony?

This past Sunday, I packed up my Sanyo Xacti pistol camera and headed over to a nearby Best Buy store. My goal was to re-run the same off-axis viewing tests that I conducted on a Sony Bravia 3D LCD TV at the CEA Line Shows. Except this time around, my guinea pigs would be Samsung and Panasonic products.

I picked a normal exposure for the correct (level) view and didn’t change it as I rotated the camera and glasses around. This was done so you could see any change in screen brightness.

First up was a Samsung 55-inch LED model. I settled in the comfy chair, pulled out the lone pair of active shutter glasses, and picked a few scenes from Monsters vs. Aliens.

Figure 1 shows a close-up view of the screen through the right eye lens, with the glasses positioned at the correct angle to the screen. No ghost images (crosstalk) were spotted and picture quality was high.

Figure 1

The next image shows the view with the glasses tilted about 30 degrees to the left. No objectionable ghosting here, either, although this particular scene is of a TV weatherman on a ‘flat’ picture tube – not much 3D going on here.

Figure 2

Figure 3 shows the view with the glasses tilted about 60 degrees to the left. The image is noticeably darker now, as the polarizers in the glasses are starting to cancel out the polarized light from the LCD TV screen.

Figure 3

Figure 4 shows – nothing! The glasses are tilted about 80 degrees to the left and the ‘twist’ of polarized light from the LCD screen is canceled out by the polarizing angle of the 3D glasses. Not surprising, considering that two polarizers are being used in the 3D glasses.

Figure 4

These tests don’t mean the Samsung glasses are completely free from ghost images when tilted. Figures 5a and 5b show two different views with the glasses tilted at about 45 degrees to either side, and you can see crosstalk in both images.

Figure 5a

Figure 5b

On to Panasonic! Figure 6 shows the 50-inch plasma screen head-on, as seen through the right lens.

Figure 6

The next figure shows the same screen with a tilt of about 45 degrees. Picture brightness has dropped a little, but there is no ghosting evident in the image.

Figure 7

Figure 8 shows the screen as seen at a nearly vertical angle, about 80 degrees. Image brightness is still good and there is only a hint of ghosting to be seen (look around St. Peter’s dome). Figure 9 shows the screen 90 degrees to horizontal and it’s still largely free of crosstalk.

Figure 8

Figure 9

From these tests. it should be pretty clear that plasma has a big advantage over LCD technology for viewing 3D, and that’s because plasma TVs don’t use polarizers as part of their imaging process. (Anti-glare glass is used, but doesn’t seem to have an adverse effect on 3D viewing angles.)

In contrast, it’s a tricky proposition to pair up polarized glasses with a polarized TV screen, as we’re just seen with Samsung and Sony LCD TVs. Your head really needs to be level to avoid seeing any ghost images.

It appears that the crosstalk problem is worse on Sony’s 3D LCD TVs because they’re only using one polarizer per glass lens (that’s the consensus educated guess). That decision results in images that are brighter, but are ridden with crosstalk – even when the glasses are positioned level to the screen. So there’s no allowance for head tilt  – even slight amounts – with Sony’s approach.

By using two polarizers per lens, Samsung cuts down crosstalk more thoroughly, just at the cost of screen brightness. But you can tilt your head at a greater angle and not be distracted by crosstalk through the glasses.

Panasonic is also using dual polarizers and their images were about as bright as Samsung’s, but nearly free of ghost images when viewed at any angle. If and when OLED-based 3D TVs make it to market, you can expect to see that same level of performance.

So…now you know!

2010 CEA Line Shows and Summer Digital Experience: A recap

The annual CEA Line Show event in New York City seems to be gaining in popularity, although the pickings were slim again this year.  Still, this event, coupled with Mitsubishi’s press showcase on 18th Street and Pepcomm’s evening Digital Experience tabletop show, held later that evening, gave me a good excuse to make a trip to the Big Apple.

My first stop was at DriveIn24 Studios, where Mits had set up a very nice dealer and press display of their latest LCD and DLP HDTV sets. As most readers know, Mitsubishi is the lone hold-out in rear-projection TV, a product category that’s nearly extinct thanks to super-low prices on big plasma and LCD TVs, along with the general public’s obsession with super-thin TV profiles and their disinterest in replacing lamps.

Still, Mits has claimed to sell in excess of half a million RPTVs every year (a number I have some doubts about) and is hanging in there as the remaining ‘niche’ player in the category. And they had a few new products to brag about, including two upgraded 82-inch DLP Rear-pro sets (WD-82738 and WD-82838), a larger, less-expensive Laser DLP product (the 75-inch L75-A91, MSRP $5,999), and a 3D Starter Pack (Model 3DC-1000, $399).

Now, THAT is some serious 3D TV viewing!

This starter kit is designed to retrofit older Mitsubishi DLP TVs for active shutter 3D and contains two pairs of active shutter 3D eyewear, a 3D emitter, a 3D adapter with remote control, an HDMI cable, and also features a Disney 3D showcase Blu-ray disc with 3D trailers of A Christmas Carol, Alice in Wonderland, and Toy Story 3. The 3D adapter is also available separately for $99.

Mitsubishi also showed off a new line of six Unisen LCD TVs (40, 46, and 55-inch) with their unique 18-speaker soundbar. Paired with a separate woofer, this audio system does provide some amazingly good surround-sound effects, and it’s also found in their ten rear pro models. The soundbar can be used by itself, or set up as the center speaker in a surround sound system (I liked the audio quality better in that mode).

The funny thing about the Mits line-up is that they’ve managed to survive some very turbulent times in the TV industry and maintain their distinct brand identity as a high-end product. (Too bad their dealers can’t pull that trick off; 62-year-old specialty retailer Ken Crane’s in southern California just announced they’re closing their doors for good this year.)

And Mits does make a high-quality product – I was quite taken with the 3D demos on that 82-inch behemoth in a darkened room, the best way to watch 3D content. They were a lot more impressive than the 3D stuff Sony showed at the Line Show (see my related post here). As for 3D on LCD TVs, Mits doesn’t think the technology is ready for prime time yet, due to crosstalk problems between LCD TVs and active shutter glasses.

Mitsubishi execs Max Wasinger (left) and Frank DeMartin (right) are all smiles as they show off their new 75-inch Laser Vue DLP RPTV…and continue to thrive in the rear-projection TV business.

Back at the Line Shows, I found a few items of interest. Envision Peripherals is a specialty brander of 19-inch, 26-inch, 32-inch, and 42-inch LCD TVs under the AOC name, and they had a demonstration of a 32-inch set that uses a standard flash memory stick as a DVR. This feature will work with any ATSC or QAM signal and writes the program to flash memory, allowing you to fast-forward, pause, rewind or skip through programs.

Currently, the minimum storage supported is 512 MB, while the maximum is 2 GB. (You’ll need about 9 GB per hour to record or shift HD programs and 3 GB per hour of SD programs.) So it’s an intriguing feature, but one which needs more work if it has any value. The literature mentioned that AOC is working on making 8GB flash drives compatible with their TVs.

Across the way, Vizio set up their booth to show a full range of consumer electronics products, including a new broadband WiFi router (XWH100, dual-band operation) and a wireless 5.1 surround sound system with sound bar for under-TV mounting (VHT510) and separate wireless subwoofer and rear speakers. Vizio also showed a passive 3D LCD TV prototype using alternate-line circular polarization, but it was plagued with purple-tinted ghost images from crosstalk. (Back to the drawing board!)

Vizio’s 65-inch passive 3D TV made for an interesting concept demo, but had serious crosstalk problems.

As mentioned in my other post, Monster Cable is in the 3D glasses business. They’ve signed a deal to OEM active shutter glasses from Florida-based Bit Cauldron, and these glasses don’t use infrared (IR) signaling. Instead, they rely on the 802.15.4 RF (wireless) ZigBee protocol, which (as a sage company representative pointed out to me last January at CES) “…will still work even if you are standing in the next room!” (No comment…)

The advantage of an RF-based connection is immunity to interference from intense lamps, fluorescent lights, and momentary obstructions of the TV’s IR emitter. Best of all, these are universal (learning) active shutter glasses that will work with ANY 3D TV. (And they work a heck of a lot better than Sony’s own glasses with Bravia LCD TVs!) They’re not cheap at $170 a pair, though.

Need a pair of ‘works anywhere’ 3D glasses? Monster’s got your number.

I wrapped the day up a visit to the Digital Experience gadget fest, where Logitech was showing a prototype of the Google TV set-top box. They couldn’t tell me anything about it or what it would cost (those details will be forthcoming in the fall), but I can tell you it has HDMI input and output connections, dual USB sockets, an Ethernet port, a SPDIF connection, and an external DC power plug. So far as I can tell, it has no provision for time-shifting or recording, although (as mentioned earlier) that could easily be done with flash memory sticks, which can be bought for about $20 apiece with 8 MB of capacity.

Across the way, TiVo had their Premiere DVRs out for inspection (they run on a Flash operating system) but no new updates to announce. They were intrigued, though, by Google’s attempt to get into the TV Guide business and what that means long-term for manufacturers of TVs and set-tops.

Here’s the Logitech prototype Google TV box. Not much to look from the top, is there?

And here’s a look at its connectors. Hmmm…HDMI inputs and outputs, eh?

Sony 3D TV: Unwatchable!

Yesterday was a hot, dry summer day, perfect for a ‘triple play’ – the CEA summer Line Show on 34th Street, Mitsubishi’s New York press exhibition, and Pepcomm’s Digital Experience tabletop shmoozefest to cap off the evening.

I decided to visit Mits first, and will have a separate report on the sole remaining player in DLP rear-projection TVs. After that, I hiked on uptown to the CEA event, where I met up with colleague and friend Ken Werner of Insight Media to tour the show floor.

Our first stop was the Sony booth, where numerous Bravia 3D LCD sets were showing the Germany – Ghana World Cup match in 3D. There was plenty of comfortable seating, so Ken and I each grabbed a pair of Sony 3D glasses to check out the action.

Whoa! What’s this? I could clearly see ghost images of each player racing around the field, a phenomenon that only got worse with a slight tilt of my head. Ken picked up on it, too. As I tilted my head even more, the ghosting (crosstalk) got even worse, rendering the images largely unwatchable at about a 30-degree angle to either side.

Looking even more clearly, we both found that, even with our heads perfectly level to the screen, we were seeing dark gray ghost images of each player (Ghana was wearing white), and these ghosts changed from dark gray to white as we tilted out heads just 20 degrees to either side.

Yikes! I sure wouldn’t want to see THAT on my home 3D TV. It would be back at the store faster than you could say ‘vuvuzela!’

How bad was the crosstalk? To put my money where my mouth is, I whipped out my trusty Sanyo Xacti HD digital camcorder, placed it directly behind one of the lenses, and shot a series of photos to show you exactly what I saw as I rotated the glasses to either side of the TV screen.

In this first series, a floating banner shows the halftime score, along with two yellow cards. So far, so good!

The next two images show what happens when I tilt the glasses 45 degrees to the left and right. Not so good! The ghost images became apparent with as little as a 20-degree tilt.

Think those are bad? Check out this next series, which shows the crowd at the game. Once again, we’re in pretty good shape with the camera and glasses held perfectly level to the screen, although if you look carefully, you can see some double images.

Now, another view, again with the camera/glasses tiled 45 degrees to the left. That image is sure to bring on a migraine in quick time.

Finally, here’s a view of the cheerleaders performing at halftime. (I didn’t know there even were cheerleaders at World Cup games!)  Viewed straight on, they look OK in 3D.

But with the glasses and camera tilted to either side, it appears I’ve had one too many Budweisers (the official beer of the World Cup) and am about ready to do a full face plant.

These results were the same through the left or right lens on any pair of glasses we tried on. And they’re consistent with the cross talk problems I saw at Sony’s NAB demo of the Masters 3D coverage.

I know what you’re thinking. And you’re right, people should NOT watching 3D TV with their head tilted to one side. But people DO watch 2D TV with their head tilted to one side, not to mention laying on a couch or the floor, perpendicular to the TV screen. (And here’s what that viewing position looks like through the Sony 3D glasses.)

Ironically, at the Bit Cauldron booth at the other end of the hall, that company’s wireless (RF) 3D active shutter glasses were being demo’ed with a Sony Bravia TV, and these glasses were largely free of the cross-talk problem (although as you turned them more and more towards 90 degrees, the TV screen got darker and darker until it turned black).

These tests were disappointing, to say the least. I expect much better of Sony. They are an acknowledged leader in consumer electronics technology and a strong brand, right up there with Apple. And I’m afraid that thousands of customers are going to buy a Bravia 3D package, take it home, hook it up, see exactly what I saw, and return the entire kit and kaboodle to Best Buy or a refund.

I can tell you from my tests so far that Samsung and Panasonic are doing a much better job with their glasses and have almost insignificant issues with crosstalk. So it can be done!

In the meantime, here’s a caveat emptor to those readers who are thinking about jumping into Sony 3D: Your best move is to wait on the sidelines a little longer until Sony gets the bugs out of their system.

More updates on Comcast / ESPN 3D

In my previous post this week, I mentioned that it would be necessary for Comcast customers to upgrade to MPEG4-compatible set-top boxes in order to watch the World Cup 3D coverage. This belief was reinforced by the list of ‘compatible’ set-tops found on the Comcast 3D FAQs Web page, which you can read here. All of these boxes are capable of decoding MPEG4-compressed video, as are the TiVo HD and Premiere XL-series converter boxes.

Subsequent to that post, I received an email from Comcast’s advanced cable labs in Colorado that the ESPN 3D stream was being encoded at about 18 Mb/s with MPEG2 compression, and that it was using the side-by-side frame compatible 3D format, originating as a 1920x1080i signal. (ESPN opted for this format to avoid image degradation that would have resulted from multiple steps of transcoding to get from 1080i/25 to 720p/60.)

I updated my last post to reflect that fact. Now, a conflicting message is coming from another source at Comcast, and you can find the original story at the Cable360.net Web site.

To quote from the story, “…Whether a customer’s provider is cable, telco or satellite, viewers must own a 3D TV and glasses, but Comcast customers have an additional hurdle to jump: They also must have an MPEG-4 set-top box…‘If a customer calls us and says they have a 3D TV and want to watch the World Cup, we’ll provide them with an MPEG-4 set-top,’ said Mark Francisco, a Comcast Fellow, yesterday at a meeting of the Rocky Mountain Chapter of the SCTE in Denver.”

Francisco went on to say that ESPN is available in both MPEG2 and MPEG4 formats, but that Comcast is planning this August to  ‘…switch the firmware that allows MPEG-4 to work. Those (MPEG-4) boxes are always associated with HD households. The vast majority are DVRs.’

It’s understandable to have some confusion around the introduction of a new technology or process. But it would be helpful if a clear and thorough explanation had gotten out earlier about the 3D set-top box compatibility issue. As it was, what ‘buzz’ was being heard implied that only MPEG4-equipped set-tops would work with the ESPN 3D broadcasts (not true) but that newer models of set-tops would be needed (true) and that in fact Comcast IS planning to move to MPEG4 encoding for channels like this in the near future (also true).

If anything, this should be instructive to those readers and seminar attendees who’ve asked me if 3D could be broadcast by terrestrial digital TV stations. Yes, it can, using either the 1080i side-by-side or 720p top+bottom formats. But your current TV won’t know what to do with either of these signals.

Hear that, set-top manufacturers? I think there’s a BIG market for outboard 3D converter boxes to work with older HDMI-equipped HDTV sets. Such a box would recognize and sequence either of the frame-compatible 3D formats into 720p/60 or 1080i/30 frames (as is done now), accepting cable (QAM) and terrestrial (VSB) modulation signals with a loop-through RF connection. A pair or two of 3D active shutter glasses could be included in the package, synchronized by a built-in infrared emitter in the converter box.Sell the whole thing for $299 at best Buy, Wal-Mart, Target, Sears, etc.

I’m not a fan of backwards compatibility in general, but there’s something to be said for it in the case of 3D.