04-03-2011, 10:25 AM
presented by S. BALA BRAHMAM
MULTI TOUCH.ppt (Size: 2.57 MB / Downloads: 366)
Introduction
WHAT IS TOUCH-SCREEN?
A touch-screen is a display which can detect the presence and location of a touch within the display area. The term generally refers to touch or contact to the display of the device by a finger or hand.
Types of Touch-screen Technologies
Resistive
Surface acoustic wave
Capacitive
Infrared
Optical imaging
Dispersive signal technology
WHAT IS MULTI TOUCH?
Multi-touch is a human-computer interaction technique and the hardware devices that implement it, which allow users to compute without conventional input devices e.g., mouse, keyboard.
HISTORY
Multi-touch technology dates back to 1982, when the University of Toronto developed the first finger pressure multi-touch display.
Bell Labs: In 1984 Bell Labs engineered a multi-touch screen that could manipulate images with more than one hand.
Fingerworks: In 1998, FW, a Newyork-based company run by University of Delaware academics John Elias and Wayne Westerman, produced a line of multi-touch products including the iGesture Pad and the TouchStream keyboard.
RECENT DEVELOPMENTS
Microsoft Surface
Perceptive Pixel
Apple iPhone, iPod touch, MacBook Air, and MacBook Pro
FUTURE
Enhanced dining experience
Concierge service
Governmental use
Concept mapping
Collaboration and instruction on Interactive Whiteboards
PRINCIPLE
FRUSTRATED TOTAL INTERNAL REFLECTION
Total internal reflection
The critical angle is given by
Total Internal Reflection
Design (Requirements)
HARDWARE REQUIREMENTS
Acrylic with LEDs at its edges
Software requirements
Programming languages like
Processing (P5), Flash, C, C++, Java, etc.
IR rays obtained on a camera
Working
Frustrated Total Internal Reflection
(a)IR view of a touch
(b)Pixel positions located on screen
Advantages
Multi touch based on FTIR is a simple and inexpensive technique
Scalable technique
True touch image information
scalable to large installations
Larger shared-display systems
Applications
Personal computers, Laptops, Tabletops, Graphics Tablets.
It supports both LCD and CRT monitors.
Telephones ,Watches ,PDAs, Mobile phones.
Advanced multi touch Gaming with high graphics support.
Government offices and business purposes.
An enhanced multimedia experience including audio,video and photo sharing.
Enhanced dining experience Applications for a multi touch display are never ending . We can even convert computer to a mere piece of display attached to a wall or a table.
Conclusion
Multi touch provides any resolution displays supported with high graphics. The applications being both made and proposed are plenty in number.
MULTI TOUCH.ppt (Size: 2.57 MB / Downloads: 366)
Introduction
WHAT IS TOUCH-SCREEN?
A touch-screen is a display which can detect the presence and location of a touch within the display area. The term generally refers to touch or contact to the display of the device by a finger or hand.
Types of Touch-screen Technologies
Resistive
Surface acoustic wave
Capacitive
Infrared
Optical imaging
Dispersive signal technology
WHAT IS MULTI TOUCH?
Multi-touch is a human-computer interaction technique and the hardware devices that implement it, which allow users to compute without conventional input devices e.g., mouse, keyboard.
HISTORY
Multi-touch technology dates back to 1982, when the University of Toronto developed the first finger pressure multi-touch display.
Bell Labs: In 1984 Bell Labs engineered a multi-touch screen that could manipulate images with more than one hand.
Fingerworks: In 1998, FW, a Newyork-based company run by University of Delaware academics John Elias and Wayne Westerman, produced a line of multi-touch products including the iGesture Pad and the TouchStream keyboard.
RECENT DEVELOPMENTS
Microsoft Surface
Perceptive Pixel
Apple iPhone, iPod touch, MacBook Air, and MacBook Pro
FUTURE
Enhanced dining experience
Concierge service
Governmental use
Concept mapping
Collaboration and instruction on Interactive Whiteboards
PRINCIPLE
FRUSTRATED TOTAL INTERNAL REFLECTION
Total internal reflection
The critical angle is given by
Total Internal Reflection
Design (Requirements)
HARDWARE REQUIREMENTS
Acrylic with LEDs at its edges
Software requirements
Programming languages like
Processing (P5), Flash, C, C++, Java, etc.
IR rays obtained on a camera
Working
Frustrated Total Internal Reflection
(a)IR view of a touch
(b)Pixel positions located on screen
Advantages
Multi touch based on FTIR is a simple and inexpensive technique
Scalable technique
True touch image information
scalable to large installations
Larger shared-display systems
Applications
Personal computers, Laptops, Tabletops, Graphics Tablets.
It supports both LCD and CRT monitors.
Telephones ,Watches ,PDAs, Mobile phones.
Advanced multi touch Gaming with high graphics support.
Government offices and business purposes.
An enhanced multimedia experience including audio,video and photo sharing.
Enhanced dining experience Applications for a multi touch display are never ending . We can even convert computer to a mere piece of display attached to a wall or a table.
Conclusion
Multi touch provides any resolution displays supported with high graphics. The applications being both made and proposed are plenty in number.