Prepared by

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Virtual Keyboard

• Prepared by
• Avinash Kumar Chauhan
• B.Tech (IT) 4th Year
• Roll No 0600115013

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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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What is a Virtual Keyboard ?

• A Virtual (projection) keyboard is a full-size
  virtual keyboard 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
  technology and artificial intelligence to let
  users work on any flat surface as if it were a
  keyboard.

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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.
• For the first time mobile device users can
  actually type normally on a virtual keyboard ,
  enabling them to work quickly and effectively,
  taking the pain and frustration out of existing
  keyboards and handwriting recognition s/w.
• 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.
  

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Virtual Keyboard Technical Terms..

• 1. Sensor Module
• The Sensor Module serves as the eyes of the
  Keyboard Perception technology. The Sensor Module
  operates by locating the user's fingers in 3-D
  space and tracking the intended keystrokes.
• 2. Infra Red Light Source
• An invisible infra-red beam is projected
  above the virtual keyboard. Finger makes
  keystroke on virtual keyboard. This breaks
  infrared beam and infrared light is reflected
  back to projector. The Sensor chip in the sensor
  module determines where the infrared beam was
  broken. Detected co-ordinates determine actions
  or characters to be generated.

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Virtual Keyboard Technical Terms..

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

• Step 1 Template creation (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 Reference Plane 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. When the user
  touches a key position on the interface surface
  light is reflected from this plane in the
  vicinity of the key and directed towards the
  sensor module.

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

• Step 3 Map Reflection Co-ordinates (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.Custom hardware
  embedded in the sensor chip (the Virtual
  Interface Processing Core) then makes a real-time
  determination of the location of the reflected
  light.The processing core can track multiple
  reflection events simultaneously and can thus
  support both multiple keystrokes and single
  keystrokes.
• The sensor watches finger movements and
  translates them into keystrokes in the device.

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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.

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Uses Of Virtual Keyboard

• BY PROFESSIONALS

• BY STUDENTS

• To take notes during a business meeting.
• As computer/PDA input.
• To do everyday work at your desk without taking
  up so much valuable space.
• High-tech and industrial Sectors.

• To take notes while in class (no one will hear
  your keying).
• To work on a paper while in the library.
• To do homework while you are on break at work.

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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.
• 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 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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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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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's 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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Some Virtual Keyboards
I-Tech Virtual Keyboard
Celluon Bluetooth Virtual Keyboard
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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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Questions?
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• THANK YOU