virtual keyboard avifina2l
TRANSCRIPT
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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
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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
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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