The document presents an overview of virtual keyboards, explaining their functionality, types, advantages, and drawbacks. Virtual keyboards project a full-size keyboard onto any flat surface using sensor technology and infrared light, allowing for portable and convenient typing. Despite their benefits, including compactness and ease of use in low-noise environments, they can be costly and may require practice to use effectively.

1. A
Presentation
On
Virtual Keyboard
Submit: Gowtham R
Regno: 2101201117
Guide:Sajith Kumar S

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.
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⮚ 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.
What is a Virtual Keyboard ?

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⮚ 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.
What you can do with a Virtual 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.
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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 .
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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.
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8 How does the Virtual Keyboard work ?

9. 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.
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How does the Virtual Keyboard work ?
(Contd..)

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.
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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
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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 the Virtual Keyboard

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
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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.
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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.
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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.
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17. Some Virtual Keyboards
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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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19. THANK YOU
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