Posts Tagged ‘technology’

Toshiba Announces Lenticular Displays: No Glasses Needed. 3D Regza GL1

Monday, October 4th, 2010

Toshiba announced a lenticular display, same technology as the Phillips WowVX.

Based on the form factor, with an really ugly base and a mere 20 inch screen, I am thinking this must be for commercial / advertising applications, not home use.

The press releases mentions 9 images (the idea is that you’re eye will pick up only 2 of them. If there are images A, B, C, D, E, F, G, H, and I, and you are standing towards the left, your left eye will get say C and the right eye D). How the TV will generate 9 images is a little confusing to me. Either they’ll require that the content is produced with 9 cameras (unlikely, but possible for advertising applications), or they’ll use 2D->3D conversion technology to take a 2-image 3D image all the way to a 9-image 3D image.

The resolution is crappy – a mere 1280×720. But it lists 8,294,400 pixels. 1280 times 720 equals 921,600. Times 9 is 8,294,400.  So clearly, TV has a lot of pixes. Also, they’ll be squished vertically to work with the lenticular sheet.

http://www.toshiba.co.jp/regza/option/gl1/index_j.htm

Toshiba Unveils World First[1] 3D LCD TVs without Dedicated Glasses
-Toshiba’s new Glasses-less 3D REGZA GL1 Series to be available
from end of December -
4 Oct, 2010

Tokyo—Toshiba Corporation (TOKYO: 6502) today unveiled the world’s first[1] LCD TVs that offer comprehensive 3D[2] capabilities without any need for dedicated glasses. The new “Glasses-less 3D REGZA GL1″ series offers two models with screen sizes specifically designed for personal use: the 20-inch 20GL1 and the 12-inch 12GL1. Both TVs will be available in Japan from the end of December.

The new 3D TVs with no need for glasses employ an integral imaging system[3] and a perpendicular lenticular sheet[4] to display smooth, natural images, and Toshiba’s image processing technology to create nine parallax images[5] from the original content and create to 3D images. The result is precise rendering of high quality 3D images whatever the viewing angle within the viewing zone[2].

The 20GL1 integrates a high definition LED backlit LCD panel specially designed for 3D capability without any need for glasses that offers approximately four times the pixels of a standard Full HD panel. It also integrates the Cell REGZA Engine designed for 3D capability without glasses and based on the Cell Broadband Engine™[6] to deliver superior multimedia processing. The result of this combination is stunningly sharp, dynamic 3D images.

Toshiba will respond to various needs from the users for LCD TV with 3D capability. This will include larger screen models that use dedicated glasses and personal use LCD TVs without glasses, all offering dynamic, stunning image depth and high image quality. Toshiba will continue to draw on synergies of its semiconductor and image processing technologies to advance REGZA series as the cutting-edge of TV technology, and to create and deliver new value to the market by continuing to expand its line-up, and by anticipating and responding to user needs.
Product Outline
Product Series Model Screen Size Price Launch in Japan
Glasses-less
3D REGZA GL1 20GL1 20-inch Open December end
12GL1 12-inch Open December end
Background to Development

Toshiba introduced the REGZA series as state-of-the-art TVs that make full use of synergies between its semiconductor and image processing technologies. Originally a 2D platform, REGZA TVs now deliver 3D images with superb quality to achieve an unsurpassed 3D experience.

Current 3D TV is based on active shutter glasses that deliver separate images to the left and right eyes. However, the market wants TVs that deliver the 3D experience without dedicated glasses across all content. In responding to this, Toshiba has adopted an integral imaging system that reproduces smooth, natural stereoscopic pictures, without any need for dedicated glasses. The company has channeled its initial efforts into personal-use 3D LCD TVs without glasses and is now commercializing 12- and 20-inch models. With these new TVs, Toshiba will seek to lead the market in 3D TV without glasses and to further increase its market share.
Key Product Features
1. The technology of 3D capability without glasses reproduces smooth, natural high quality 3D images

The new Glasses-less 3D REGZA GL1 series employ an integral imaging system and perpendicular lenticular sheet that can display natural and smooth high quality 3D images.

The integral imaging systems is based on the principal of sampling and collecting form several directions the light reflected from an object, and then faithfully reproducing the light through the display to realize smooth, natural images. Until now, conventional 3D technology without glasses has produced a fall off in image resolution and increased blurring[7] that has prevented practical use. Toshiba employs an LED backlit LCD panel specially designed for 3D content that systematically aligns pixels, and has also adopted a perpendicular lenticular sheet in order to realize precise rendering and natural, high quality 3D images.

Toshiba’s technology simultaneously delivers nine parallax images to the LCD panel and controls and optimizes light emission and direction from the center, right and left of the screen to secure a wide viewing angle. The result is optimized display of high quality 3D images whatever the position and angle to the screen of the viewer[2].

This technology is the recipient of the 21st Century Invention Prize for 2010, one of the National Commendations for Invention, from the HATSUMEI KYOKAI, Japan Institute of Invention and Innovation.
2. LCD panel designed for 3D capability without glasses

The 20GL1’s high definition LED backlit LCD panel, specially designed for 3D capability without glasses, has approximately four times the pixels of a Full HD panel, approximately 829 million pixels. It can combine and display nine parallax images carrying information from nine images created in real time from a single frame. It transmits the final 3D image with a resolution of 1280 x 720 pixels.

Toshiba’s LED backlight control system positions 1,440 LEDs directly under the LCD panel to realize bright 3D images. Moreover, each pixel can support the display of red green and blue (RGB) in a layout expressly designed for 3D imaging. Image data from each pixel is replicated nine times and the direction in which they are transmitted is controlled by the lenticular sheet. The result is smooth, natural 3D images that can be viewed from multiple angles without glasses.

The 12GL1 supports the same approach for approximately 147 million pixels and integrates an LED panel that can display 466 x 350 pixels.

The 20GL1 LCD panel is the fruit of research with Toshiba Mobile Display Co., Ltd. This was supported in part under the revised budget for FY2009 from the Ministry of Internal Affairs and Communications for “Research and Development on Glasses- Free 3D Image Technologies.”
3. Newly developed engine designed for 3D capability without glasses

The 20GL1 integrates the Cell Broadband Engine™[6] and the Glasses-less 3D CELL REGZA Engine, newly developed multi-parallax conversion LSIs designed for superior multimedia processing. High speed arithmetic processing creates nine parallax images from original content and converts it to 3D images with real depth, allowing Toshiba to achieve precise rendering of natural, high quality 3D images.

For the 12GL1, the newly developed engine designed for 3D capability without glasses combined with Toshiba’s image processing LSIs and multi-parallax LSIs creates the 3D image.
4. Focus on Environmental Considerations

(1) Integration of LED backlight

The Glasses-less REGZA GL1 Series TVs are environmentally conscious products that integrate energy-saving LED backlighting. The backlights are free of mercury, which occurs at trace levels in cold cathode fluorescent (CCFL) backlights.

(2) Energy-saving features

The 20GL1 offers a number of energy-saving features:
- Power consumption is controlled by maintaining optimum image brightness.
- Automatic stand-by if no command is received from the remote controller for approximately three hours.
- Automatic stand-by mode if, when the TV is set to external input, no signal is received for approximately 15 minutes.

(3) Effective use of resources

All components that use over 25g of plastic indicate the materials used and are designed for recycling. Use of polylactic resin, a biodegradable, vegetable-based plastic 100% derived from corn, contributes to reduced consumption of petroleum and to lower CO2 emissions.

(4) RoHS[8] and J-Moss[9] (Green Mark)compatible

The REGZA GL1 Series contributes to moves toward environmentally conscious products by achieving full compliance with the EU’s RoHS and Japan’s J-Moss.
About Toshiba Group Environmental Vision

Environmental Vision 2050 guides Toshiba Group in achieving a ten-fold increase in overall eco-efficiency by 2050, compared to 2000, in order to contribute to the future of a sustainable Earth as a “corporate citizen of planet Earth”. Toward this goal, we promote initiatives aimed at realizing a world where people lead affluent lives in harmony with the Earth, based on the concept of three “Greens”: Greening of Process (environmentally conscious manufacturing process), Greening of Products (environmentally conscious products), and Greening by Technology (contributing through environmental technology). Toshiba Group promotes its environmental initiatives under the global brand “Toshiba eco style.”

For more details, please visit: http://www.toshiba.co.jp/env/en/management/vision2050.htm
Product Outlines
Product Glasses-less 3D REGZA
Series GL1 Series
Model 20GL1

12GL1

Screen

(Backlight)
-20V LED backlit LCD Panel designed for 3D capability without glasses
-Support for 3D capability without glasses
(Integral imaging system of 9 parallax images with vertical lenticular sheet)
- Display pixels: 1,280 x 720
(Total pixel count: 8,294,400)
- Contrast: 550:1 (JEITA[10])
- Suggested viewing distance: 90cm - 12V LED backlit LCD Panel designed for 3D capability without glasses
-Support for 3D capability without glasses
(Integral imaging system of 9 parallax images with vertical lenticular sheet)
- Display pixels: 466 x 350
(Total pixel count: 1,470,000)
- Contrast: 500:1 (JEITA)
- Suggested viewing distance: 65cm
External
dimensions
(without stand) 64.0 x 10.5 x 66.3 cm
(W x D x H, design value) 33.7 x 5.2 x 27.2 cm
(W x D x H, design value)
External
dimensions
(with stand) TBD[11] 33.7 x 20.0 x 27.2 cm
(W x D x H, design value)
Weight TBD TBD
Wattage TBD TBD
Annual power
consumption[12] TBD TBD

For further information, visit http://www.toshiba.co.jp/regza/
(The above web site is in Japanese.)

Plasma versus LCD

Tuesday, April 20th, 2010

I thought the war between Plasma and LCD had already been won decisively by LCD. But apparently plasma (aka Plasma Display Technology or PDP) has some advantages in the 3D market:

- Cheaper at larger sizes. Since 3D screens are generally larger, PDP overindexes in 3D markets
- Faster response times. This is a biggie. Here’s what’s going on.

An LCD uses polarization to control the intensity of each pixel. The speed at which a pixel can go on and off is called response time, and is usually measured in milliseconds, or thousands of a second. 2ms, 4ms, 8ms, – those are common values.

Plasma works by the ionization of gas, and it is fast. Turn on the juice, and the pixel lights up. Turn off the electricity, and the plasma immediately stops emitting light.

Where you see plasma’s advantage is when an object moves across the screen. If there are 1920 pixels across, and it takes 8 ms for a pixel to fully go dark, then a small dot moving across the screen will look blurred. If that dot is 20 pixels, and it moves across the screen in 1 second, then each pixel should be lit up about 10ms. if it takes another 8ms for the pixel to shut down, then the ball will look stretched to be about twice as wide as it should be.

http://www.reuters.com/article/idUSTRE63I0HQ20100419

In 2D, the LCD blur is annoying. In 3D, it can destroy the illusion of 3D, so it’s a just more important effect to try to fix, especially since 3D programming heavily skews towards action movies and fast-moving sports.

Dolby3D Technology

Tuesday, April 6th, 2010

Here goes – my description of Dolby 3D Digital Cinema.

Buckle your seatbelts – this is going deep.

Wave Basics

Your eyes and your ears both pick up waves. Ears pick up sounds waves, which are compressions of air molecules, and your eyes pick up light waves, which are sort of like oscillations of magnetic fields.

Waves are described by a few basic factors… the ones that are important for our discussion are wavelength and frequency. In reality they describe the same thing just from different perspectives.

Wavelength is how long it takes for a wave to peak and valley. If you follow the wingtip of a bird flapping its wings, and the bird moves about 1 meter for each flap of its wings, then you say the wavelength is about 1 meter.

Frequency is the element of time. Using the above example, if it takes about 1 second per flap, you’d say the frequency of the bird flapping its wings is about 1 time per second.

Assuming bird moves at the same speed no matter what (not true for birds but basically true for light waves and sound waves), then the faster a bird beats its wings, the shorter the distance between peaks and valleys. In other words, the higher the frequency, the lower the wavelength.

So just keep that in mind. For most waves, if you double the frequency, you half the wavelength.

Sound Waves and the ear

Think about the sounds your ear can hear. It can pretty much pickup any frequency of sound between certain ranges.

So your ear knows exactly the difference between a sound wave with a frequency of 500 Hertz (just a fancy way of saying there are 500 peaks and 500 valleys per second), and a frequency of 600 Hertz.

Your eye can’t do that.

Light waves and the eye

Your eye really sucks at figuring out what wavelength light is composed of. (But on the flipside, your eye can pinpoint where light is coming from much more accurately than your ear can pinpoint sound, and your eye creates enough information to generate images. Human ears cannot do that. Sound waves actually are good enough to create images – think of sonar and ultrasounds – but the human ear just isn’t good enough).

When it comes to figuring out the color of light, your eye relies on 3 types of cones. None of the cones have any ability to determine wavelength by itself.

What a cone does is this… if you blast with light of the exact right wavelength, it’ll signal strongly. If you blast it with the same amount of light but with a slightly different wavelength, it’ll signal less strongly. It’s almost like that rattle in your car that shows up at just the right speed –my old Honda Civic rattled really bad right around 78 mph. At 80mph, or 76mph, the rattling was a little less, and less than 70mph or more than 90mph, the rattling was gone entirely.

So if you hit your red cone with light at about 550 nanonmeter wavelength, it’ll signal pretty strongly. 540 nm or 560 nm light signals a little less strongly.

But if your brain doesn’t know if it’s seeing bright 550nm light… or it’s seeing not very bright 540nm light. That’s why the cones in your eye are limited. Your ear can tell the difference between 2 wavelengths perfectly – your eye cones cannot.

BTW 540nm is roughly yellow. How does your brain figure out that when the blue cone is mildly stimulate, that 540nm light is bright yellow, not weak red light?

Because there are 3 cones. Pure yellow light 540 makes both your Red and Green cones fire… 550nm makes your red cones fire more than your green cones. That’s how your brain knows. It figures out the ratio of stimulation between the 3 cones.

This is really interesting for a bunch of reasons. First, there are combinations of colors that you can’t tell apart. If I blast you with an equal combination of 540nm and 560nm light, your brain thinks it’s just looking at 550nm light.

The other thing is that your brain can theoretically see colors that do not exist in nature.

http://www.scientificamerican.com/article.cfm?id=seeing-forbidden-colors

How all this is relevant to 3d

Okay, now that we’ve slogged through the basic biology of the eye… how does it all relate to 3D?

We know that 3D is all about isolating different images for each eye. Most technologies alternate images and rely either on high speed shutters, or polarization, to separate a left and right video.

Dolby3D uses a different technique that’s fairly similar to polarization.

If you look really close at an old TV screen, you’ll Red, Green, and Blue areas, or RGB. By varying the intensity of the Red, Green, and Blue light, computer monitors can reproduce just about all the colors a human eye can see (though not all for a bunch of reasons).

What Dolby3D does is, for the left eye, it’ll give an RGB picture that’s some combination of 3 red, blue, and green that’s shifted just a touch up. I am making this up, but call it 441nm (blue), 531nm (green), and 561nm (Red). For the right eye, it’ll do the opposite, say, 439nm, 529nm, 559nm.

Put on some glasses that, for the left eye, only allow in 441nm/531nm/561nm, and for the right eye, allow in 439nm, 529nm, and 556nm. Voila. You have image separation.

As with RealD’s polarized solution, the frames still alternate between left and right. And the glasses are a little more expensive. But the movie screens can be plain old white canvases, and not the special silver screens that RealD needs (the silver preserves the polarization).

Long post. Thanks for slogging through. Post up any questions you have.

Eye Isolation Technology #5 / James Cameron on cheap 3D

Tuesday, March 30th, 2010

I was reading this interesting article on Deadline about James Cameron imploring studios to not just rush out a bunch of crappy 3D product, thereby destroying the market.

Deadline Article with James Cameron

When a comment mentioned Dolby3D. I did a little investigation… it’s a completely different technology to isolate an image for each individual eye. But it’s going to take some explanation of color theory so I’m going to have to take some time to post it. You might be wondering what color theory has to do with 3D… here’s a sneak preview:

Sneak Preview

Philips WOWvx (lenticular display, no glasses) AVAILABLE NOW

Tuesday, March 30th, 2010

This technology was announced about 2 years ago, and the product was released about a month ago: lenticular 3D TV from Philips.
For Purchase: Philips WOWvx – 42-3D6W02 – 42″
Because this TV uses small prisms in front of the display, it creates an individual image for each eye without the need for glasses. In theory, it’ll only work if you sit still, without moving around, and you have to be sitting within a defined distance from the TV.I can’t wait to see one at BestBuy.

For now, the product appears to be so new that it’s not even listed on the Philips.com website.

but it is promoted on Philip’s youtube site. Here’s their video that demonstrates the old Lenticular “3d postcards” and how it applies to their TV.

RealD – Theatrical Technology Description

Friday, March 26th, 2010

So I met someone last night from Entertainment Media Ventures and got the scoop on RealD, at least theatrically.

Theatrically, RealD’s technology adds polarization to the movie image. The projector itself doesn’t really speak 3d – it speaks 2D. But the RealD technology knows that even frames are for the right eye, and odd frames are for the left eye, and alternates polarization filter accordingly. Evens frame get a clockwise polarization, odd frames get a counterclockwise polarization (CCW). The RealD technology physically swaps the filter in front of the projector.

From there, it’s easy to isolate the left image for the left eye, and the right image for the right eye: your RealD glasses. CW for one eye, CCW for the other.

This same well informed friend was not entirely sure what technology RealD provides to Cablevision. I’m still working on it.

Cablevision / RealD deal

Thursday, March 25th, 2010

A sparse article I discovered in Cynopsis before finding the source article from Reuters and actual press release: Cablevision is going to use RealD technology for some of their upcoming in-home broadcasts.

I don’t get this at all. You’ve seen the RealD logo at theaters. I assumed RealD handled the clockwise / counterclockwise circular polarization technology.

I’ll figure out what exactly RealD is providing Cablevision and post it back here… I suspect its more about editing tools.

Link to Reuters Article

Link to Original Press Release

3D Eye Isolation Technology

Wednesday, March 17th, 2010

The way I understand it, there are 4 ways to beam separate images into your eyes.

  1. Goggles. Each eye gets its own mini TV set, with what’s essentially a microscope to make a screen 1 inch big an 2 inches away appear like a 42 inch screen 10 feet away.
  2. Lenticular Display, in which one monitor shoots 2 different images in 2 different directions. If a TV has about 2000 vertical lines, then there’ll be 1000 little triangular prisms that each cover 2 lines. One line goes to your left eye, the other to your right. You’ll remember this from “3D” or “animated” stickers you got as a kid.
  3. Active Shutters. A display will alternate between showing the left image, then the right image. When showing the left image, the shutter on your right eye will go black. When showing the right image, vice versa. This happens fast enough that your eye doesn’t notice. This is fairly easy for current TV technology to handle, so the cost isn’t that much – pretty soon it’ll be about zero.
  4. Polarization. The left image is showing in one polarization, the right image in an opposing polarization. A polarized lens over your left eye allows only the left image in, and ditto for the right. This technology uses simple optics in the eyewear, unlike the shutter technology, so the glasses are cheaper (cheap enough to be disposable at a movie theater). But the TV display technology is much much more expensive – about $2,000 more (at retail).

According to this article in U.S. News & World Report, the Asia market is leaning towards the more expensive but higher quality polarization technology, whereas the U.S. market is going towards the cheaper active shutter technology.

Link to U.S. News & World Report Article