Saptarshi Dey CSE 3 rd Year MCKVIE Touchscreen

- Saptarshi Dey, CSE, 3 rd Year, MCKVIE

Touchscreen…. . A Quick Recap Ø Can be controlled in devices such fingers as game or by consoles, adisplay special that styles/pen Pcs, mobiles, etc. touchscreen is an by electronic visual the user Ø ACommon can control through simple or multi-touch gestures

How Touchscreen Works v Touch. Sensor v Controller v Software Driver

Problems faced by touchscreen users

Screen Cracked!!! Finger Marks!!!!

What is Touchscreen Technology? Ø It In works Touchless by detecting Touchscreen hand the movements there is in nofront physical of it. contact between the user and the device

Technology behind this Ø This is based on optical pattern recognition using a solid state optical matrix sensor Ø 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 Ø In each of these sensors there is a matrix of pixels Ø Each pixel is coupled to photodiodes incorporating charge storage regions.

Workflow Moving Images in front of the sensor Signals are processed by a DIP to provide output to the devices Detected by the sensor The sensor generates electric signals Light enters to the sensor and hits the pixel matrix The photodiodes inside the pixel converts incoming light into electric charge

APPLICATIONS…….

Touchless Monitor

3 D Navigation of Hand Movements in Touchless Screen

Glimpses of GBUI

Touchscreen Demo

Advantages Drawbacks Ø No Notde-sensitization much, except the of line screen of sight Ø Can be controlled from a distance Ø Useful for physically handicapped people

Ø Touchless Technology is still developing Ø Many Future Aspects Ø With this in few years our body can become a input device