virtual keyboard presentation

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VIRTUAL KEYBOARD BY IGNITE(group) SUBMITTED TO cxxx||:::::::::::::::::> MR. Raj Kumar Mishra

Transcript of virtual keyboard presentation

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VIRTUAL KEYBOARD

BY IGNITE(group)

SUBMITTED TO cxxx||:::::::::::::::::> MR. Raj Kumar Mishra

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IGNITE

INTRODUCTION

VisionPPT DESIGN

KushalPOSSIBILITY AND USES

RonishRESEARCH ON HISTORYADVANTAGES AND DISADVANTAGES

PushanINFORMATION FINDING

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A virtual keyboard is a software component thatallows a user to enter characters. A virtualkeyboard can usually be operated with multipleinput devices, which may include a touchscreen,an actual computer keyboard and a computermouse.

WHAT IS VIRTUAL KEYBOARD ?

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Physical keyboards with distinct keys comprising electronically changeable displays integrated in the keypads

Virtual keyboards with touchscreen keyboard

layouts or sensing areas

Optically projected keyboard layouts or similar arrangements of "keys" or sensing areas IGNITE

TYPES OF VIRTUAL KEYBOARDVirtual keyboards can be categorized by the following aspects:

Optically detected human hand and finger motions

Virtual keyboards to allow input from a variety of input devices, such as a computer mouse or other assistive technology device.

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OPTICALLY PROJECTED KEYBOARD

A projection keyboard is a form of computer inputdevice whereby the image of a virtual keyboard isprojected onto a surface: when a user touches thesurface covered by an image of a key, the devicerecords the corresponding keystroke. Some connect toBluetooth devices, including many of the latestsmartphone, tablet, and mini-PC devices with Android,iOS or Windows platform.

What is it?

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HISTORY

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An optical virtual keyboard was invented and patented by IBM engineers in 1992. It optically detects and analyses human hand and finger motions and interprets them as operations on a physically non-existent input device like a surface with painted or projected keys. In that way it can emulate unlimited types of manually operated input devices (such as a mouse, keyboard, and other devices). Mechanical input units can be replaced by such virtual devices, potentially optimized for a specific application and for the user's physiology, maintaining speed, simplicity and unambiguity of manual data input.In 2002, start-up company Canesta developed a projection keyboard using their proprietary "electronic perception technology". The company subsequently licensed the technology to Celluon of Korea.A proposed system called the P-ISM combines the technology with a small video projector to create a portable computer the size of a fountain pen

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USES OF VIRTUAL KEYBOARDINCLUDING ALL; OPTICAL AND INBUILT SOFTWARE VIRTIUAL KEYBOARD

Mobility ImpairmentsThis is perhaps the virtual keyboard's most important use. For many with severe mobility impairments, using a keyboard is simply not possible. While speech-to-text is sometimes useful, it's hard to match the versatility of an actual keyboard. As such, for someone who can manage to move a joystick or a mouse but not a keyboard, a virtual, on-screen keyboard allows for some---if not advanced---keyboard usage. This is a very important lifeline for day-to-day computer usage.

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USES OF VIRTUAL KEYBOARDINCLUDING ALL; OPTICAL AND INBUILT SOFTWARE VIRTIUAL KEYBOARD

Foreign Character SetsOdds are, if you live in America, your keyboard doesn't include a variety of symbols commonly used abroad---such as the symbol for currencies like the Yen or Euro, accented versions of roman characters or Asian characters. A virtual keyboard can give you access to symbols like this. While this isn't nearly as fast as a keyboard designed for a given language, it's more than adequate for the occasional word or sentence.

TouchscreensTouchscreen devices, such as the Apple iPhone and various tablet PCs, often use a virtual keyboard instead of a physical one. The iPhone, for example, makes liberal use of a virtual keyboard---you need to use it for any and all text input on the device. And while most tablet PCs include physical keyboards, it's occasionally faster to use a virtual keyboard than to flip out the physical keyboard.

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USES OF VIRTUAL KEYBOARDINCLUDING ALL; OPTICAL AND INBUILT SOFTWARE VIRTIUAL KEYBOARD

bypass key loggersIf you think a computer you're using might be compromised, or you simply don't trust public computers, using a virtual keyboard is a good way to bypass any hardware keylogging and most software keylogging programs. Use the virtual keyboard to enter any passwords or sensitive information and you've got an added level of security

It is easy to use, convenient and user-friendlyOptical keyboards are very easy to use as they don’t require any hardware which increases the rate of typing and it is also accurate as the sensor is very precise.

Input can be given from any where Almost all optical keyboards use Bluetooth so the input can be entered from any placeWhich makes the possibility very big.

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PossibilitiesThe only limit is our imagination

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Virtual keyboards have a lot of possibilities. Currently development of thought input is progress which Is a new form of a virtual keyboard instead of using optical sensor for fingers it uses neuro-sensors to find what the uses wants to input including format like it’s color, size, font.And also research is going on for building a sensor keyboard which is made of glass or plastic having optical sensor and it can directly communicate with other devices to give input. Not limited in it the sensor can be placed in any transparent material.

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Advantages

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PortabilityOne of the most important advantages of virtual laser keyboard technology is the relative ease by which these devices may accompany smaller hardware. As miniaturization takes over the mobile computing industry, the primary sacrifice is quality data input. Smartphones, PDAs and even some computers are too small for many people to reliably operate. Often, the type of activity on these devices is limited by the size of their keys. Some users eventually get used to the size, but the larger buttons of a regular keyboard will always make certain tasks easier. The virtual laser keyboard is projected by a small device that easily travels with this other technology. When connected, it allows a full-size keyboard to integrate with the device for all data input. While it would be otherwise impractical to transport a separate, conventional hardware keyboard, these virtual devices add this crucial functionality without compromising the small size of this new technology.

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AppearanceWhile not necessarily a practical consideration, it is important to note the significant role that style plays in the development of portable technology. As noted in the Pittsburgh Business Times in June 2002, the visual appeal of mobile technology is as important in product success as actual functionality. Unlike most forms of technology that have come before them, smartphones and similar devices are enjoying trends similar to that of fashion, and many consumers accessorize their lifestyles with this in mind. Virtual laser keyboards fit well into this mindset because their function often draws much attention. As the ultimate attention-grabbing example of their functionality, some virtual laser keyboards can project the keyboard image into the air to allow control without a flat surface. Rarely are these devices mentioned in the media without reference to their visual appeal.

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MaintenanceUnlike conventional hardware keyboards, virtual laser keyboards have no moving parts, and the bulk of their functionality requires no actual contact with the device. Whereas conventional hardware is prone to damage by spills, drops and other malfunctions, virtual laser keyboards are easy to maintain. Manufacturers often market these devices as "damage free," and this is an important advantage in any piece of portable hardware that undergoes extensive use.

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Disadvantages

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Keyboard FeelThe keys on a virtual keyboard are activated with a touch sensor instead of physically pushing down a key as you would on a physical keyboard. This can take some getting used to since many people type based on the feel of the concave keys of the physical keyboard. Without the feel of the keys, some users find it is easy to inadvertently touch a wrong key on a virtual keyboard, slowing you down and possibly even creating inaccurate or confusing documents if the mistakes are not caught in advance of publishing.

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Keyboard Speed and Character Support

Your typing speed will likely be negatively impacted on a virtual keyboard. Using experienced virtual keyboard users in a test, researchers at Northern Illinois University found that the average typing speed on the touchscreen was 25 words per minute, while on a standard desktop and laptop keyboard, it was 63 words per minute, a dramatic difference in speed and time spent on the keyboard. Also, the virtual keyboard may not include all the keys you have become accustomed to on your physical keyboard, affecting your productivity and increasing your learning curve.

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Screen UseWhen using the virtual keyboard, the amount of screen space left to view and proofread your document is minimal, requiring you to scroll up or down to see the document in its entirety. This constant scrolling and lack of screen space will slow your typing and possibly affect your train-of-thought. Additionally, because typing on a virtual keyboard requires frequent contact with the screen, the likelihood of smudges and dirt on the screen is high. With repetitive use, you'll need to frequently wipe the screen clean to continue working.

ErgonomicsDepending on the size of the virtual keyboard and device, you may need to look straight down at the device, leading to neck fatigue and soreness. The placement of the wrists and fingers will also be different compared to a standard keyboard, possibly creating discomfort with prolonged use over time. Also, recent studies have shown that virtual keyboard use can lead to shoulder stiffness or pain due to the way a user's fingers need to hover above the keys to avoid accidentally activating a key --keeping the fingers elevated impacts the shoulder muscles.

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Conclusion

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AT LAST VIRTUAL KEYBOARD CAN BE A VERY HELPFUL INVENTION IF IT IS USED PROPERLY IN THE PROPER SECTOR ELSE IT CAN BE TOTAL WASTE. THERE CAN BE REVOLUTIONARY CHANGES IN VIRTUAL KEYBOARD THAT CAN CHANGES THINGS AND MAKE THE KEYBOARD EVEN BETTER. TO SUM UP VIRTUAL KEYBOARD HAS MANY USES AND IS BEING USED IN DIFFERENT SECTORS .

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THANK YOU

We will highly appreciate your suggestions .

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