VIRTUAL KEYBOARD

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WHAT IS A VIRTUAL KEYBOARD?

Team Of Researcher From the Israeli-based

Company KVB

A Virtual Keyboard is a projection keyboard

that is projected and touched on any surface.

A virtual keyboard consists of a laser that

projects an image of a keyboard onto a flat

surface which can then be typed on as if it were

actually there.

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The keyboard watches your fingers

movements and translates that action into

key strokes in the devices.

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FEATURES

For the first time mobile device users can

actually type normally on a virtual keyboard.

Provide multilingual text input mechanism.

Size is about a fountain pen.

No physical appearance.

It takes up less desk space than a conventional

keyboard

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COMPONENTS OF VIRTUAL KEYBOARD

This system consists of three modules,

1.The sensor module,

2.IR-light source and

3.The pattern projector

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SENSOR MODULE:

The Sensor Module serves as the eyes of

the Keyboard Perception technology.

The Sensor Module operates by locating

the user's fingers in 3D space and tracking

the intended keystrokes.

INFRA RED LIGHT SOURCE

An invisible infra-red beam is projectedabove the virtual keyboard. Finger makeskeystroke on virtual keyboard. This breaksinfrared beam and infrared light is reflectedback to projector.

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The Sensor chip in the sensor module

determines where the infrared beam was

broken. Detected co-ordinates determine

actions or characters to be generated.

PATTERN PROJECTOR

The Pattern Projector or optional printed

image presents the image of the keyboard of

the system. This image can be projected on any

flat surface. The projected image is that of a

standard ‘QWERTY’ keyboard, with all the keys

and control functions as in the keyboard.

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TYPES OF VIRTUAL KEYBOARD

Bluetooth virtual keyboard

Developer virtual keyboard

Canesta virtual keyboard

Sense board technologies

Kitty

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DEVELOPER VIRTUAL KEYBOARD

Working with Siemens

Procurement Logistics Services Rechargeable batteries similar to those in cell phones power the compact unit.

As a Class 1 laser, the output power is below the level at which eye injury can occur.

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VIRTUAL KEYBOARD FOR PC’S

A keyboard image is

projected onto any

surface. Touching a

key’s image generates

a unique electronic

signal corresponding

to the key’s image

that was touched.

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ADVANTAGES

The typing does not require a lot of force. So easing the strain on wrists and digits.

The Virtual Keyboard is not restricted to the QWERTY touch-typing paradigm, adjustments can be done to the software to fit other touch-typing paradigms as well.

No driver software necessary, It can be used as a plug and play device.

High battery life.

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DRAWBACKS

Virtual keyboard is hard to get used to. Sinceit involves typing in thin air, it requires alittle practice. Only people who are good attyping can use a virtual keyboard efficiently.

It is very costly.

The room in which the projected keyboard isused should not be very bright so that thekeyboard is properly visible

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APPLICATIONS

High-tech and industrial Sectors

Fingerprint security

Used with Smart phones, PDAs, email, word

processing and spreadsheet tasks.

As computer/PDA input.

Gaming control.

TV remote control

Musical applications

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CONCLUSION

Virtual key boards claim to provide

the convenience of compactness with

the advantages of a full-blown QWERTY

keyboard. Virtual keyboards will make

typing easier, faster, and almost a

pleasure.

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THANK YOU

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