Touchless Touchscreen - Saptarshi Dey, CSE, 3rd Year, MCKVIE
TouchlessTouchscreen
- Saptarshi Dey,CSE, 3rd Year,
MCKVIE
Touchscreen…..A Quick Recap
A touchscreen is an electronic visual display that the user can control through simple or multi-touch gestures
Can be controlled by fingers or by a special styles/pen Common in devices such as game consoles, Pcs,mobiles,etc.
How Touchscreen Works
TouchSensor
Controller
Software Driver
Problems faced by touchscreen users
Finger Marks!!!!Screen Cracked!!!
What is Touchscreen Technology?
In Touchless Touchscreen the there is no physical contact between the user and the device It works by detecting hand movements in front of it.
Technology behind this
This is based on optical pattern recognition using a solid state optical matrix sensor
Optical matrix sensor
This sensor is then connected to a digital image processor, which interprets the patterns of motion and outputs the results as signals
Optical Matrix Sensor In each of these sensors there is a matrix of pixels Each pixel is coupled to photodiodes incorporating charge storage regions.
WorkflowMoving Images in front of the
sensor
Detected by the sensor
Light enters to the sensor and hits the pixel
matrix
The photodiodes inside the pixel
converts incoming light into electric
charge
The sensor generates
electric signals
Signals are processed by a DIP to provide output to the
devices
APPLICATIONS…….
Touchless Monitor
3D Navigation of Hand Movementsin Touchless Screen
Glimpses of GBUI
Touchscreen Demo
Advantages
No de-sensitization of screen
Can be controlled from a distance
Useful for physically handicapped people
Drawbacks
Not much, except the line of sight
Conclusion
Touchless Technology is still developing
Many Future Aspects
With this in few years our body can become a input device