02-05-2011, 11:47 AM
PRESENTED BY-
SUNNI SINGH
virtual keybrd 9 - Copy.ppt (Size: 2.22 MB / Downloads: 194)
INTRODUCTION
A virtual keyboard is a software and/or hardware component that allows a user to enter characters.
A virtual keyboard can usually be operated with multiple input devices, which may include an actual keyboard, a computer mouse, a headmouse, and an eyemouse.
System Architecture
TYPES
physical keyboards with distinct keys comprising electronically changeable displays integrated in the keypads.
virtual keyboards with touch screen keyboard layouts or sensing areas.
optically projected keyboard layouts or similar arrangements of "keys" or sensing areas.
optically detected human hand and finger motions.
JavaScript virtual keyboards used to translate the input from one keyboard layout to another.
Design Concept
A laser or beamer projects visible virtual keyboard onto level surface.
A sensor or camera in the projector picks up finger movements.
Detected co-ordinates determine actions or characters to be generated.
Technology
The keyboard picks up finger movements and triangulates them into a keystroke with a great degree of accuracy.
Uses low-cost semiconductor-based sensors.
The chipset simply outputs RS232 serial keystrokes, and does not require a specific CPU.
Features
Personal Digital Assistants
Cellular Telephones
Laptops & Tablet PCs
Space saving Computers
Industrial Environments
Test Equipment
Larger battery backup
Very tiny size
Compatibility
Experimental Results
Competition
Fold-up Keyboards
Fabric Keyboards
Thumb Keyboards
Screen keyboards
Speech
Pen Input
Advantages
Portability
Accuracy
Speed of text entry
Typing surface
Repetitive strain injuries
Flexibility
Keyboard layouts
Alternative layouts.
Disadvantages
Dependency on optical source.
Dependency on wireless network.
High response time.
More complex installation.
Applications
Cell phones.
Desktop & Laptop etc.
Industrial machines.
Further advancements.
Conclusion
A virtual keyboard system based on a true-3D optical range camera is presented.
Keystroke events are accurately tracked independently on the user.
Future Scope
To make it more easy & more comfortable.
Make it more widespread and commonly used with all systems.
SUNNI SINGH
virtual keybrd 9 - Copy.ppt (Size: 2.22 MB / Downloads: 194)
INTRODUCTION
A virtual keyboard is a software and/or hardware component that allows a user to enter characters.
A virtual keyboard can usually be operated with multiple input devices, which may include an actual keyboard, a computer mouse, a headmouse, and an eyemouse.
System Architecture
TYPES
physical keyboards with distinct keys comprising electronically changeable displays integrated in the keypads.
virtual keyboards with touch screen keyboard layouts or sensing areas.
optically projected keyboard layouts or similar arrangements of "keys" or sensing areas.
optically detected human hand and finger motions.
JavaScript virtual keyboards used to translate the input from one keyboard layout to another.
Design Concept
A laser or beamer projects visible virtual keyboard onto level surface.
A sensor or camera in the projector picks up finger movements.
Detected co-ordinates determine actions or characters to be generated.
Technology
The keyboard picks up finger movements and triangulates them into a keystroke with a great degree of accuracy.
Uses low-cost semiconductor-based sensors.
The chipset simply outputs RS232 serial keystrokes, and does not require a specific CPU.
Features
Personal Digital Assistants
Cellular Telephones
Laptops & Tablet PCs
Space saving Computers
Industrial Environments
Test Equipment
Larger battery backup
Very tiny size
Compatibility
Experimental Results
Competition
Fold-up Keyboards
Fabric Keyboards
Thumb Keyboards
Screen keyboards
Speech
Pen Input
Advantages
Portability
Accuracy
Speed of text entry
Typing surface
Repetitive strain injuries
Flexibility
Keyboard layouts
Alternative layouts.
Disadvantages
Dependency on optical source.
Dependency on wireless network.
High response time.
More complex installation.
Applications
Cell phones.
Desktop & Laptop etc.
Industrial machines.
Further advancements.
Conclusion
A virtual keyboard system based on a true-3D optical range camera is presented.
Keystroke events are accurately tracked independently on the user.
Future Scope
To make it more easy & more comfortable.
Make it more widespread and commonly used with all systems.