A virtual keyboard is projected onto any surface using an IR light source and pattern projector. It consists of a sensor module that tracks finger movements in 3D space to recognize keystrokes or mouse movements. The projected image displays a standard QWERTY keyboard that can be used to type. Virtual keyboards offer portability, accuracy, and flexibility without requiring a flat surface.

2. A Virtual Keyboard is a projection
keyboard
that is projected
and touched on any surface

6. Celluon Bluetooth Virtual
Keyboard

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

9. •
The Sensor Module operates by
locating the user's fingers in 3-D
space and tracking the intended
keystrokes, or mouse movements

10. •
•
The Infrared Light Source emits a beam of
infrared light
This helps in recognizing the hand
movements and the
pressing of keys

11. 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
•

12. Portability
 Accuracy
 Speed of text entry
 Lack of need for flat or large typing surface
 Ability to minimize the risk for repetitive strain
injuries
 Flexibility
 Keyboard layouts can be changed by software
allowing for foreign or Alternative keyboard
layouts.


13. 
Tactile feel

Space

Dirty screens