Virtual Keyboard Avifina2l

8/14/2019 Virtual Keyboard Avifina2l

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Prepared by

Himanshu Chanana06IT020

VirtualKeyboard


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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. Uses of Virtual Keyboard. Virtual Keyboard advantages. Virtual Keyboard drawbacks.

Conclusion. Some Virtual Keyboards.


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A Virtual (projection) keyboard is a full-size virtualkeyboard projected and touched on any surface.

The keyboard watches your fingers move and translates

that action into keystrokes in the device. Virtual Keyboard is just another example of todays

computer trend of smaller and faster.

The virtual keyboard technology uses sensor technologyand artificial intelligence to let users work on any flatsurface as if it were a keyboard.

What is a Virtual

Keyboard ?


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The Virtual Keyboard uses the infrared & laser technologyto project a full-size keyboard onto any flat surface. Soyou can use it almost anywhere.

The Virtual Keyboard is not restricted to the QWERTYtouch-typing paradigm ; adjustments can be done tothe software to fit other touch-typing paradigms as well,such as the DVORAK keyboard.

W at you can o wit aVirtual Keyboard ?


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Virtual Keyboard TechnicalTerms..

1. Sensor Module

The Sensor Module serves as the eyes of the KeyboardPerception technology. The Sensor Module operates by

locating the user's fingers in 3-D space and tracking theintended keystrokes.

2.Infra Red Light Source

An invisible infra-red beam is projected above the virtual

keyboard. Finger makes keystroke on virtual keyboard. Thisbreaks infrared beam and infrared light is reflected back toprojector. The Sensor chip in the sensor module determineswhere the infrared beam was broken. Detected co-ordinatesdetermine actions or characters to be generated.


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Virtual Keyboard TechnicalTerms..

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 ofa standard QWERTY key-board, with all the keys andcontrol functions as in the keyboard.


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How oes t e VirtuaKeyboard work ?

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Step 1: Template creation (Pattern Projector)

A template of the desired interface is projected onto theadjacent interface surface. The template is produced byilluminating a specially designed, highly efficient holographicoptical element with a red diode laser.

Step 2: Reference Plane Illumination (IR LightSource)

An infra-red plane of light is generated just above, and

parallel to, the interface surface. This light is invisible to theuser and hovers a few millimeters above the surface. Whenthe user touches a key position on the interface surface lightis reflected from this plane in the vicinity of the key anddirected towards the sensor module.

How oes t e Virtua( ..)Keyboard work ? Contd

H Vi


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Step 3: Map Reflection Co-ordinates (SensorModule)

Reflected light from user interactions with the interface

surface is passed through an infra-red filter and imaged on toa CMOS image sensor in the sensor module.Custom hardware embedded in the sensor chip (the VirtualInterface Processing Core) then makes a real-timedetermination of the location of the reflected light.The processing core can track multiple reflection eventssimultaneously and can thus support both multiplekeystrokes and single keystrokes.

The sensor watches finger movements and translates them

into keystrokes in the device.

How oes t e Virtua( ..)Keyboard work ? Contd

R Vi


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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.

Reasons to use t e VirtuaKeyboard


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BY PROFESSIONALS

To take notes during abusiness meeting.

As computer/PDA input.

To do everyday work atyour desk withouttaking up so muchvaluable space.

High-tech and industrialSectors.

BY STUDENTS

To take notes while inclass (no one willhear your keying).

To work on a paperwhile in the library.

To do homework whileyou are on break atwork.

Uses Of Virtual Keyboard


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Virtual KeyboardAdvantages 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.

The typing does not require a lot of force. So easing the

strain on wrists and hands. High battery life. The standard coin-sized lithium battery

lasts about eight months before needing to bereplaced. The Virtual Keyboard is not restricted to the QWERTY

touch-typing paradigm, adjustments can be done to thesoftware to fit other touch-typing paradigms as well.


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Virtual keyboard is hard to get used to. Since it involvestyping in thin air, it requires a little practice. Onlypeople who are good at typing can use a virtualkeyboard efficiently.

It is very costly ranging from 150 to 200 dollars. So noteveryone can buy this product.

The room in which the projected keyboard is used

should not be very bright so that the keyboard isproperly visible.

Virtual KeyboardDrawbacks


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Conclusion

Virtual Keyboard uses sensor technology and artificialintelligence to let users work on any surface as if it were akeyboard. Projection key boards or virtual key boards claimto provide the convenience of compactness with theadvantages of a full-blown QWERTY keyboard. VirtualKeyboard is designed for anyone who's become frustratedwith trying to put information into a handheld but doesn'twant to carry a notebook computer around.

Thus virtual keyboards will make typing easier,faster, and almost a pleasure.


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Some Virtual Keyboards

I-Tech Virtual Keyboard Celluon Bluetooth Virtual Keyboard


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References

http://www.howstuffworks.com 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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Questions?


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THANK YOU

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Virtual Keyboard Avifina2l