VIRTUAL KEYBOARD
·
A virtual keyboard is actually a key-in
device, roughly a size of a fountain pen, which uses highly advanced laser
technology.
·
Virtual Keyboard is just another example of
today’s computer trend of ‘smaller and faster’.
·
Many alternate forms like speech recognition,
hand writing recognition devices had come.
·
The new virtual keyboard technology uses
sensor technology and artificial intelligence to let users work on any surface
as if it were a keyboard.
·
The software and hardware part recognizes the
typed characters and pass it to the computer.
·
Virtual Keyboard, being a small, handy, well-
designed and easy to use application, turns into a perfect solution for cross
platform multilingual text input.
·
QWERTY KEYBOARD QWERTY is
the most common keyboard layout on English-language computer and typewriter
keyboards
·
INSIDE KEYBOARD The processor in a keyboard
has to understand several things that are important to the utility of the keyboard,
such as
o Position
of the key in the key matrix
o The speed
at which to transmit the typematics.
·
VIRTUAL KEYBOARD:
o Virtual
keyboard is just another example of today’s computer trend of smaller and
faster
o Virtual
Keyboard uses sensor technology and artificial intelligence to let users work
on any surface as if it were a keyboard.
o Virtual
Devices have developed a flashlight-size gadget that projects an image of a keyboard
on any surface and let’s people input data by typing on the image.
o The
Virtual Keyboard uses light to project a full-sized computer keyboard onto
almost any surface, and disappears when not in use
o The
device detects movement when fingers are pressed down.
·
This system comprises of three modules: 1.
The sensor module 2. IR-light source and 3. The pattern projector
·
The Sensor Module operates by locating the
users fingers in 3-D space and tracking the intended keystrokes, or mouse
movements.
·
The Infrared Light Source emits a beam of
infrared light
·
. This helps in recognizing the hand
movements and the pressing of keys .
·
This image can be projected on any flat
surface.
• The projected image is that of a standard QWERTY keyboard, with all the keys and control functions as in the keyboard
.• The Pattern Projector or optional printed image presents the image of the keyboard or mouse zone of the system
• The projected image is that of a standard QWERTY keyboard, with all the keys and control functions as in the keyboard
.• The Pattern Projector or optional printed image presents the image of the keyboard or mouse zone of the system
·
Applications of virtual keyboard:
o KEYBOARD
o Foreign
character sets.
o Touch
screens.
o Bypass
key loggers.
o Mobility
impairments.
·
Advantages
Portability
Speed of text
accuracy
Alternative keyboard layouts
Flexibility
Lack of need for flat or large typing space
Portability
Speed of text
accuracy
Alternative keyboard layouts
Flexibility
Lack of need for flat or large typing space
·
. Disadvantages of virtual keyboard
Tactile feel
Space
Dirty screens
Tactile feel
Space
Dirty screens
·
CONCLUSION:
Virtual keyboard uses sensor technology and artificial intelligence to let users work on any surface as if it were a keyboard.
Projection keyboards or virtual keyboard claim to provide the convenience of compactness with the advantages of a full blown QWERTY keyboard.
Virtual keyboard uses sensor technology and artificial intelligence to let users work on any surface as if it were a keyboard.
Projection keyboards or virtual keyboard claim to provide the convenience of compactness with the advantages of a full blown QWERTY keyboard.
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