A Presentation On Virtual Keyboard

1. APresentationOnVirtual Keyboard Submitted by:- Jugaaduengineer (Anil Saini)

2. Presentation Overview • What is Virtual Keyboard? • What you can do with a Virtual Keyboard? • Virtual Keyboard Technical Terms. • How does the Virtual Keyboard work? • Reasons to use the Virtual Keyboard. • Types of Virtual Keyboard • Applications of Virtual Keyboard. • Virtual Keyboard advantages. • Virtual Keyboard drawbacks. • Conclusion. • Some Virtual Keyboards.

3. What is a Virtual Keyboard ? • A Virtual (projection) keyboard is a full-size keyboard projected and touched on any surface. • Virtual Keyboard is just another example of today’s computer trend of ‘smaller and faster’. • The virtual keyboard technology uses sensor technology and artificial intelligence to let users work on any flat surface as if it were a keyboard.

4. What you can do with a Virtual Keyboard ? • The Virtual Keyboard uses the infrared & laser technology to project a full-size keyboard onto any flat surface. So you can use it almost anywhere. • The Virtual Keyboard is not restricted to the ‘QWERTY’ touch-typing paradigm ; adjustments can be done to the software to fit other touch-typing paradigms as well, such as the ‘DVORAK’ keyboard.

5. Virtual Keyboard Technical Terms.. 1. Sensor Module • The Sensor Module serves as the eyes of the Electronic Perception technology. • The Sensor Module operates by locating the user's fingers in 3-D space and tracking the intended keystrokes.

6. 2. Infra Red Light Source • The Infrared Light Source emits a beam of infrared light . • This light beam is designed to overlap the area on which the keyboard pattern projector or printed image resides. • This helps in recognizing the hand movements and the pressing of keys .

7. 3. Pattern Projector • The Pattern Projector or optional printed image presents the image of the keyboard of the system. This image can be projected on any flat surface. • The projected image is that of a standard ‘QWERTY’ key-board, with all the keys and control functions as in the keyboard.

8. How does the Virtual Keyboard work ?

9. How does the Virtual Keyboard work ? (Contd..) Step 1:Projection Module (Pattern Projector) • A template of the desired interface is projected onto the adjacent interface surface. • The template is produced by illuminating a specially designed, highly efficient holographic optical element with a red diode laser. Step 2:Micro Illumination (IR Light Source) • An infra-red plane of light is generated just above, and parallel to, the interface surface. • This light is invisible to the user and hovers a few millimeters above the surface.

10. Step 3: Sensor Module • Reflected light from user interactions with the interface surface is passed through an infra-red filter and imaged on to a CMOS image sensor in the sensor module. • The sensor watches finger movements and translates them into keystrokes in the device.

11. Types of Virtual Keyboard • There are different types of virtual keyboards, manufactured by various companies which provide different levels of functionalities . • The different types of virtual keyboards are: • Developer VKB • Canesta • Sense board Technologies • KITTY • InFocus

12. Reasons to use the Virtual Keyboard • It takes up less desk space than a conventional keyboard. • The typing does not require a lot of force. So easing the strain on wrists and hands. • When connected to your handheld computer it is more convenient to carry around than your laptop. • You can use it with your desktop, laptop, PDAs, Smart phones or handheld computer . • No driver software necessary, it can be used as a plug and play device.

13. Applications of Virtual Keyboard • High-tech and Industrial sectors. • Used with Smart phones, PDAs, email, word processing and spreadsheet tasks. • As computer/PDA input. • Gaming control. • TV remote control

14. Virtual Keyboard Advantages • It can be projected on any surface or you can type in the plain air . • It can be useful in places like operation theatres where low noise is essential. • High battery life. The standard coin-sized lithium battery lasts about eight months before needing to be replaced. • The Virtual Keyboard is not restricted to the ‘QWERTY’ touch-typing paradigm, adjustments can be done to the software to fit other touch-typing paradigms as well.

15. Virtual Keyboard Drawbacks • Virtual keyboard is hard to get used to. Since it involves typing in thin air, it requires a little practice. Only people who are good at typing can use a virtual keyboard efficiently. • It is very costly ranging from 150 to 200 dollars. So not everyone can buy this product. • The room in which the projected keyboard is used should not be very bright so that the keyboard is properly visible.

16. Conclusion • Virtual Keyboard uses sensor technology and artificial intelligence to let users work on any surface as if it were a keyboard. • Projection key boards or virtual key boards claim to provide the convenience of compactness with the advantages of a full-blown QWERTY keyboard. • Virtual Keyboard is designed for anyone who become frustrated with trying to put information into a handheld but doesn't want to carry a notebook computer around. Thus virtual keyboards will make typing easier, faster, and almost a pleasure.

17. Some Virtual Keyboards I-Tech Virtual Keyboard Celluon Bluetooth Virtual Keyboard

18. References • http://www.newscom.com/cgi-bin/prnh • www.canesta.com • www.procams.org • www.billbuxton.com/3state.html • www.smarttech.com • http://www.virtual-laserkeyboard.com/demo.asp • www.laser-keyboard.com • www.wikipedia.org

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