Glasses-less: Toshiba 3D TV

Glasses-less is ideal: Toshiba develops integral imaging 3D TV

October 7, 2010 | Main News

Toshiba Corp. has developed 3D LCD TVs based on an integral imaging method that presents the 3D effect to viewers without the need for special glasses by combining the computing power of the CELL engine and newly developed 4Kx2K low-temperature polysilicon (LTPS) displays. This advance follows Toshiba's commercialization of conventional 3D TVs requiring glasses. "Since ideally we want to offer 3D TVs that deliver 3D images to viewers without glasses, we deployed our technologies to make it happen," said Masaaki Oosumi, president and CEO of Toshiba Visual Products Company.

Toshiba's glasses-less 3D TV generates 9 parallax images
from one original frame to create the 3D effect.

Toshiba will begin marketing two 3D TVs—a 12-inch and a 20-inch model, in Japan in December. The company is also currently exhibiting a prototype 56-inch 3D TV at the CEATEC show in Makuhari.
Toshiba will probably begin releasing products overseas once 40-inch or larger TVs employing the integral imaging method are ready, said Oosumi.
Whereas current 3D TVs deliver the 3D effect by sending two images for the left and right eyes, respectively, the integral 3D system creates the 3D effect by delivering multiple images with different angles. Toshiba's TVs generate nine parallax images from one original frame.
In Japan, NHK and Hitachi are also developing a 3D system based on the integral method. The biggest challenge is to attain high resolution.
Toshiba realized HD resolution (1280x720 pixels) for the 20-inch TV, dubbed the 20GL1. The company attributes this to a new engine and a low-temperature LCD jointly developed with its subsidiary Toshiba Mobile Display, a specialist in LTPS displays.
To achieve a glasses-less performance, the dedicated 3D engine integrates the Cell Broadband Engine and the multi-parallax conversion LSIs for image processing.



The LTPS display has 4Kx2K (8,294,400 pixels) resolution. Each pixel consits of vertically aligned red, green and blue subpixels. Nine pixels in a set function as one virtual pixel for the 3D display. Nine parallax lights from one pixel are dispersed by a lenticular sheet on the display.
The company plans to sell the 20-inch TV at about 240,000 yen (US$2800*) and the 12-inch one at around 120,000 yen. It expects to ship about 1,000 sets a month.
* Original figures are in Japanese yen. The exchange rate is roughly US$1=85 yen.
Toshiba has taken the lead in the introduction of glasses-less 3D TVs, but marketing appears to be almost on a trial basis—limited to Japan and with monthly shipments of only 1,000 units. Oosumi of Toshiba Visual Products conceded that the products are rather technology-oriented and not yet fully optimized in terms of cost and size.
Meanwhile, powerful competitors in Korea are also readying glasses-less 3D TVs. It was reported in June that a concerted government-industry effort is being launched in Korea, including subsidies, to promote the development of glasses-less large-sized 3D TVs and 3D cameras, targeting completion of display development in 2012 and of camera development in 2013.

3D TV without Glasses

the future of entertainment

Review: Toshiba’s glasses-free 3D TVs

Toshiba is the first mayor brand to actually release 3D TVs which do not require glasses. Here we take a look at these TVs and try to decide whether you should already consider buying these TVs or if it’s better to wait or maybe you should stick to 3D TV with glasses.

The technology being used here works by providing two different perspectives of one two dimensional picture. A barrier or lens makes sure your right eye receives only one of the two perspectives and your left eye the other. Your brain then combines the two perspectives into a three dimensional picture.

The following glasses-free 3D TV models are already available on the market.
In October 2010 Toshiba unveiled the first 3D TV models requiring no glasses:

Model	Screen size	Resolution	Price
Toshiba Regza 20GL1	20 inch	1280×720	$2900 (just in Japan)
Toshiba Regza 12GL1	12 inch	466×350	$1400 (just in Japan)

Parallax barrier and lenticular screen technology (Source: Wikipedia)

It is a benefit that you can actually see a sharp three dimensional picture without having to wear any special 3D glasses with these TVs.
Since there are no glasses to determine which picture should be received by which eye, other technology is needed. In the models currently available two technologies called Lenticular Lens Technologyand Parallax Barrier Technology are used. This is also known as auto stereoscopy.
It works by providing two different perspectives of one two dimensional picture. A barrier or lens makes sure your right eye receives only one of the two perspectives and your left eye the other. Your brain then combines the two perspectives into a three dimensional picture.

Currently there are some major drawbacks to these TVs. Due to using a combination of the Lenticular Lens Technology and the Parallax Barrier Technology, the picture can only be shown on a smaller screen.
A couple of the other current limitations include a very limited viewing angle of approximately 40 degrees and the need for the views to sit at a fixed distance for a sharp picture. This distance is about 2 feet for a 12 inch TV and 3 feet for the 20 inch TV.

Even if you are able to get all of these things right you still will not get the same effect as you would with glasses. You will not be able to see any bullets flying by or any dinosaurs leaping off the screen without using glasses.

Currently these models are only available in Japan.
In December 2011 Toshiba is about to release the following TV:

Model	Screen size	Resolution	Price
Toshiba Regza 55X3 (former 55ZL2)	55 inch	3840×2160	$11730 (Japan, December 2011, availability outside of Japan unknown)

This glasses-free model uses the same technology as the previously mentioned TVs, but with a few tricks. Toshiba managed to get the effect on a screen size of a whopping 55 inches, which is a huge improvement over 12 and 20 inches.
This is accomplished partially by a technology called the Head Tracking 3D Technology. This Technology consists of a camera that determines the different viewer positions, and enables everyone to get the same 3D effect by sending two slightly different pictures to the respective left and right eyes of each individual viewer.
This may save some of the problems previously mentioned. However, one negative is that the perceived 3D effect only seems to go in depth and not very much. So there won’t be anything flying out of your TV.

Toshiba plans on continuing their line of 3D TVs without glasses and delivering glasses-free 3D TV worldwide by 2015.

Say Good Bye to 3D Glasses with New Parallax Barrier Technology

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Are you currently frustrated putting on three dimensional glasses if you watch three dimensional movies and playing games? For those individuals who say yes for above question this is a new technology where individuals four eye watching could be prevented. Manufacturers and Toshiba ‘re going allow it to be alive with glasses-free 3-D to portable products.Superbly animated figures appear to become jumping from the overall game player I’m holding. Planes and cars are swooping toward me so well which i’m really flinching. The graphics are detailed the colours are natural. I’ve didn’t have a much better 3-D experience, and here’s the good thing: This handheld, multidimensional marvel, a prototype from 3M, doesn’t require me to put on individuals cumbersome, chunky 3-D eyeglasses.
New glasses-free 3-D products are going to hit the industry, as well as their backers are wishing they’ll make three dimensional glasses as obsolete as Smell-O-Vision. These devices, referred to as “autostereo” to differentiate them in the kind needing eyeglasses, includes not just video games such as the one I’ve been having fun with but additionally cameras, mobile phones, and tablet computer systems. One of the primary is going to be autostereo 3-D Televisions, at the moment striking stores in Japan, and Manufacturers’s 3DS handheld gaming system, due for release worldwide early the coming year.

PRINCIPLE OF three dimensional DISPLAY:

To see 3d, an individual’s eyes must see different, slightly unaligned images. Within the real life, the spacing between your eyes makes which happen naturally. On the video screen, it’s not too simple one display in some way needs to present another and separate view to every eye. Some systems handle this concern by interspersing the right and left sights they’re known as multiplexed. Others, known as consecutive, alternate right and left sights. Regardless of the approach, the shows then use optical or technological methods to direct the right view towards the correct eye.
For instance, the bulkiest three dimensional glasses combined with presently available 3-D Televisions are active-shutter glasses. They contain some miniature LCD sections that synchronize using the large LCD screen within the TV. Once the primary screen is showing a picture destined for the right eye, a liquid-very shutter within the left lens from the glasses makes that lens opaque, and the other way around. This consecutive system switches between images intended for each eye a large number of occasions another, developing a smooth 3-D effect.

Principle of Manufacturers and Toshiba for glasses free 3-D technology is :

The Manufacturers 3DS’s autostereo screen, produced by Sharp, utilizes a multiplexed “parallax barrier” technology. This process lays another layer of liquid deposits alongside a conventional LCD and it is backlight. This extra layer produces thin vertical strips that block a few of the light and direct the rest of the light alternately towards the right and left eyes, developing a 3-D effect for any single viewer in a set distance, usually around 30 centimeters.

Parallax barrier technology comes with a couple of problems. Since the multiple layers of deposits prevent some light from reaching the consumer, dealing with a suitable degree of brightness means turning in the backlight, drawing up energy and rapidly draining batteries in portable products. And since each eye sees only half a screen’s total pixels, the strategy cuts the effective resolution in two. So producers must choose from a presentation of normal resolution and brightness—and suffer dull, low-resolution 3-D graphics—or upgrade to some better, greater resolution screen that’s also pricey and energy hungry.
Manufacturers split the main difference using its new console, thumping the brightness up but keeping the resolution relatively low. The 3DS comes with an 800- by 240-pixel screen that provides 400- by 240-pixel sights to every eye. Although this is one step up in the 256-by-192 screen of their predecessor, the Manufacturers Nintendo dsi, it is only one-sixth the resolution located on the similarly sized Apple apple iphone 4. Quite simply, you wouldn’t wish to watch a movie—or even notice a photo slideshow—on the 3DS.
Parallax barrier shows also provide sensitive geometries that deliver optimum 3-D effects limited to a specific eye-separation distance—as close as you possibly can towards the record average of 65 millimeters. These shows will also be updated for any specific distance from screen to eye, using the 3-D effect diminishing in the event that distance is off by less than 5 centimeters. This distance sensitivity is a smaller amount of an problem for handheld products than free standing shows.
There-forefront we are able to enjoy 3-D without glasses…….Technology Rocks……..