Screenless display
- 2. Imran Haider Jaffri Muhammad Azeem Zulfiqar Ali Ansar Abbas Shahzaman Khalid
- 3. Advancement in different technologies are making human life more and more comfortable day by day. Thus the improvement can be accomplished by upgrading the existing tools and machines. Today's touch screen technology which is adopted by almost all electronic gadgets will become history tomorrow. Screenless Display will replace these touch screen displays and will reduce the use of screens, ultimately hardware component will become cheap. Screen less display is one of the most interesting subjects in technologies and that's why number of renowned IT companies are working on projects concerning screenless display technology to prove themselves. The primary aim of Screenless technology is to transfer or display information/data without using screen at all. Google glass is the best example of screenless technology till date. The problem with this technology is that it isn't much developed yet and available in very limited range of products. though not currently, but it is sure to make a mark in the new era
- 4. Reto Meier, an “Android Developer Advocate for Google” recently laid out a fairly science-fiction account of where computer (or at least mobile) interfaces are headed. In the spirit of the best futurism, all of his predictions - from Augmented Reality eye glasses to advanced batteries - have parallels in the real world. What follows is a walk-through of the future, expressed in terms of the not quite ready for prime time discoveries coming out of labs today.
- 5. Working on the average laptop is like working on a desk that’s as big as a sheet of paper. That’s why all our “files” are half an inch high. The key to productivity and immersion is more, bigger screens - hence the proliferation of external monitors, secondary reading devices and even mobile phones with improbably large screens. So-called “Pico” projectors (named for their tiny size) already exist - there’s even an HD version, the Forever Plus, that’s less than an inch on its longest dimension. And there are mobile phones, such as the Samsung Show, which have built- in picoprojectors - so outside of market demand (how many of us really need this?) there’s nothing to stop this prediction from coming true.
- 6. Technological advancement nowadays is moving to a faster pace. The latest display technology -Touch Screen Display, commonly used in our smart phones and tablet computers will move to a mere history in the coming future. Screenless Display, the emerging new display technology will replace this touch screen environment and will solve the problems at higher level, making life more comfortable. The main aim of the Screenless Display is to display or transmit the information without the help of a screen or the projector.
- 7. This field came into progress during the year 2013 by the arrival of products like holographic videos, virtual reality headsets, retinal displays, mobiles for elderly, eye tap etc. At present, we can say that only part of the Screenless Display Technology is brought up which means that more advancement is necessary for a boost in the technology. Lack of space is one of major problem faced by screen displays. This problem will surely provide a pathway for screenless display.
- 8. Screenless Display was an excellent thought that came into many experts inorder to solve the major problems related to the device miniaturization. Lower space screen displays have made the need of screenless displays more than ever. Screenless, as the word suggests clearly means ‘no screen’. So, Screenless Displays can be defined as a display which helps to display and even transmit any information without the aid of screens.
- 9. When will screenless displays be fully available? This question is not yet answerable since many developments are under stage only. Since the displays are capable of projecting 3D images to the space, many disadvantages of 2D and screen based displays can be avoided. Displaying feature of it can be thought of as a projector without a movie. Using this excellent technology, we can even make our smart phone a TV. The countdown for the first screenless display has started now currently from the month of May 2014 onwards. Screenless Display currently uses Interactive Projection technology with visual display and 3D Projection Technology.
- 11. Visual Image Retinal Display Synaptic Interface
- 12. The first screen-less display that needs mentioning is Google Glass. This device has been tested for the past year, and some lucky individuals have even got their devices already. Google Glass sits on the face like a pair of glasses, and on one eye it has a block of glass that allows you to see augmented reality. Images can be displayed right in front of your eye, as well as text and information about objects and places that are in front of you. This technology is only in its early stages, but definitely shows that screen-less displays will become a natural form of media consumption in the future
- 14. In this type of screenless display our eye perceives the images that are formed in the air without using any kind of screens. One of the well-known example of visual image is Hologram. Holographic messages, from the movie 'Star Wars' are become true now. Visual image uses light and thus reflected light from the intermediate object is captured. Another example of visual image is heads-up display used in jet fighters.
- 18. The technique which is used to create and generate hologram is called as holography. Just like a compact disk or tape record, a hologram is recorded(on a holodisk) first and then reconstructed whenever it needed. This can be achieved by capturing the reflected light from the intermediate object. It is also possible to generate 3D images now a days. The system focuses a beam of laser light so that it generates plasma medium in the environment using atmospheric nitrogen and oxygen. This medium is able to display holographic images.The following diagram shows basic working principle of hologram.
- 19. Holographic technology has unfortunately not gone very far past trickery with mirrors. This form of photography provides a three dimensional image, and some technologies are now creating images using lenses, helium neon and holographic film. Scientists will not have a fully working holographic table prepared for market any time soon, but it is definitely on the cards for the future. The only downfall of this kind of system, however, is that the orientation and viewing angle of a viewer will determine the quality of the image that can be seen – meaning that so far, holographs are not ideal for media or information consumption.
- 23. Virtual retinal display systems are a class of screen less displays in which images are projected directly onto the retina as shown in figure 3. They are distinguished from visual image systems because light is not reflected from some intermediate object onto the retina; it is instead projected directly onto the retina. The VRD was initially invented by Kazuo Yoshinaka in 1986.Later work at the Human Interface Technology Lab at University of Washington had brought out a VRD system in 1991.Now VRD is under more research.
- 26. With a retinal display light is not reflected off an immediate object, like in a visual image, but it is projected directly onto the retina. This can be handy in that one is not limited by physical screen size because there is no immediate object to be viewed, retinal display can be used to keep things such as financial information safe from snooping eyes. The image can take up the entire field of vision. We’ve seen the potential of retinal displays in movies like Terminator.
- 28. Synaptic Interfaces does not use light at all and the visual image is directly given to the brain. The technology is in the advancement mode and it is now been tested on humans too. This is useful for security system, effective communication, education, business, planning and broadcast. Success was achieved in sampling video signals from eyes of horseshoe crab through their nerves.
- 30. Brain-computer Interfaces allows direct communication between the brain and the external device. Brain Machine Interface, Mind Machine Interface, Direct Neural Interface and Synthetic Telepathy Interface are some common names by which they are known. Can you guys imagine a computer been controlled using our mind? Then this imagination is coming to a reality through synaptic interfaces. Recently Duke University reported that by connecting the brains of two mice over the Internet, the mices were able to cooperate and perform tasks. In 2013 Harvard University reported that they established a link between the brains of rat and human.
- 33. The products belonging to this emerging technology bring out many advantages compared to the existing products with the old technology. While taking the images into consideration, the present screenless displays have the ability to present 3D images, far point images and an image with higher resolution one. Good brightness and contrast and large angle of view are the other essential advantages. With the increasing use of the screenless products, we can expect a decrease in the cost also in the coming future. Lower power consumption, light weight, and providing better privacy are some essential advantages achieved in all the smart screenless display products. The screenless displays will boost up the field of entertainment at a great stage.
- 34. Disadvantages faced now are basically the higher cost and limited availability of the screenless display products. Many problems related to eye sight can arise since the products require close interaction with the eye.