Keyboards without keys and boards

Paresh and Prabhjot
SE computer
SSBT’s COET, Jalgaon

TOPICS :-
INTRODUCTION
VIRTUAL KEYBOARD TECHNOLOGY
DIFFERENT VIRTUAL KEYBOARDS
APPLICATIONS
ADVANTAGES
DRAWBACKS

Introduction:-
Touch typing device.
Compact and faster.
Uses sensor technology and AI.
Uses infrared cameras to interact.
Finger tracking based interface.
Multilingual support for keyboard.
VKB has no physical support
Works on any surface.
Used when our normal keyboard fails.

VIRTUAL KEYBOARD TECHNOLOGY :-
This system comprises of three modules:
1. The sensor module
2. IR-light source
3. The pattern projector

1) The Sensor Module
operates by locating the
user's fingers in 3-D space
and tracking the intended
keystrokes.
Uses electronic
perception technology
2)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 .
3) The Pattern Projector or
optional printed image
presents the image of the
keyboard or mouse zone of
the system.
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.

Types Of Virtual Keyboards :-
 VKB PROJECTION
 SENSE BOARD
 SCURRY
 V TYPE

VKB PROJECTION DEVICES:-
 Projects laser image of a keyboard on
any flat surface.
Infrared cameras detect key strokes.
Surface impact of fingers serves as typing
feedback.

SCURRY :-
Operates computer by moving two hands in empty air.
 Next-generation glove-like, wearable device.
 It allows user to punch in letters without a keyboard, scroll up and
down and control a cursor.

Sense board -
Consist of two rubber pads that slip onto users hand.
Muscle movements in the palm are sensed.
Translate movements into key strokes by pattern recognition methods.

V TYPE :-
Detects key strokes in air with a
data glove.
Active finger tracking method is
used

Applications:-
In operation theatres.
 In High-tech and Industrial sectors.
Used with smart phones, tabs and PDA’s.
In word processing, email and spread sheet tasks.
As computer/PDA input.
Gaming control.
TV remote control.

ADVANTAGES:-
 Laser can be projected on any surface or even in the air.
Used where low noise is essential.
Typing does not require a lot of force.
Touch typing paradigm can be adjusted.
Plug and play device.
No driver software necessary.
High battery life.

DRAWBACKS:-
 VKB is hard to get used to.
Typing in thin air requires a little practice.
Projected keyboard should not be used in bright room.
 The devices are very costly.

Keyboards without keys and boards

Keyboards without keys and boards

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Keyboards without keys and boards