Touchscreen 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 multitouch gestures ID: 594008
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Slide1
Touchless
Touchscreen
- Saptarshi Dey,
CSE, 3rd Year,
MCKVIESlide2
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
.Slide3
How Touchscreen Works
TouchSensor
Controller
Software DriverSlide4
Problems faced by touchscreen usersSlide5
Finger Marks!!!!
Screen Cracked!!!Slide6
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.Slide7
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 signalsSlide8
Optical Matrix Sensor
In each of these sensors there is a matrix of pixels Each pixel is coupled to photodiodes incorporating charge storage regions.Slide9
Workflow
Moving Images in front of the sensor
Detected by the sensorLight 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 devicesSlide10
APPLICATIONS…….Slide11
Touchless MonitorSlide12
3D Navigation of Hand Movements
in Touchless ScreenSlide13
Glimpses of GBUISlide14
Touchscreen DemoSlide15
Advantages
No de-sensitization of screen
Can be controlled from a distance
Useful for physically handicapped people
Drawbacks
Not much, except the line of sightSlide16
ConclusionTouchless Technology is still developing
Many Future AspectsWith this in few years our body can become a input deviceSlide17