Quantitative Analysis of Scrolling Techniques

8/8/2019 Quantitative Analysis of Scrolling Techniques

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QUANTITATIVE ANALYSIS

OF

SCROLLING TECHNIQUE

CHANDAN KUMAR

MBA(ISM)500011934


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RESEARCH BY:---


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SOME POINTS ABOUT :--


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Microsoft Corporation is a public multinational corporation

headquartered in Redmond.

Microsoft established on April 4,1975 to develop and sell BASIC

interpreters.

Bill gates and Paul Allen Joinltly establish the company.

1985 to 1994 windows and office.

1995 to 2005 internet and 32 bit era

2006 on vista and cloud computing


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ABSTRACT:-

Here we talk about a formal experimentalparadigm designed to help evaluate scrolling

interaction techniques. Such a method is

needed by interaction designers to quantify

scrolling performance, thereby providing a tool

to evaluate and improve upon new techniques.


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INTRODUCTION:-

Scrolling through a document is a common task performed by

millions of computer users every day.

Mice with scrolling wheel and joysticks are ubiquitous.

increasing importance of mobile devices has inspired new

approaches, such as using tilt to scroll.

Here performance difference between scrolling technique as afunction of distance and tollerence .

Comparision between IBM scroll point and MICROSOFTS

intellimouse.


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SOME SCROLLING INTERACTION

TECHNIQUES:-


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IBM SCROLL POINT PRO

The IBM ScrollPoint Pro is a recent commercial version of the prototype

implementation .

The device scrolls the document at a speed proportional to the force

exerted on the isometric joystick.

The force sensor has a lower sensing resolution than IBM track point.

The most crucial property of the ScrollPoint is the

self-centering nature of the isometric joystick.


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INTELLIMOUSE SCROLLING WHEEL:-Its wheel rolls with less friction.

The wheel senses 18 positions per revolution,

The IntelliMouse wheel is integrated with a button,

which by default triggers a rate scrolling mode that

causes scrolling to move increasingly faster as theuser moves the mouse further.


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MAIN PROBLEM FACED BY THECOMPANY IN RESEARCH IS::--

To quantify scrolling performance and

improve the scrolling distance as well asthe required tolerance of

scrolling


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SOLUTION USED IN RESEARCH

IS::--

FITTS LAW..


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Fitts' law is a model of human psychomotor behaviordeveloped in 1954.Extending Shannons theorem 17 in

information theory (a formulation of effective

information capacity of a communication channel),

Fitts discovered a formal relationship that modelsspeed/accuracy tradeoffs in rapid, aimed movement

(not drawing or writing). According to Fitts Law, the

time to move and point to a target of width W at a

distance A is a logarithmic function of the spatialrelative error:


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MT=

a + b log2(2A/W + c)

where

MT is the movement time

a and b are empirically determined constants, that aredevice dependent.

c is a constant of 0, 0.5 or 1 (refer to [11] for details)

A is the distance (or amplitude) of movement from

start to target centerWis the width of the target, which corresponds to

accuracy


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CONCLUSION

The scrolling performance in accordance with the

scrolling distance gives us the result that IBM scroll

point is faster than the Microsoft intellimouse for

long distances or when we have more than 100pages.(e.g 200 or 1000etc)

The intellimouse less faster than scrolling mouse

but it is more useful for less distances.


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REFERENCE:-

1. Balakrishnan, R., Baudel, T., Kurtenbach, G., Fitzmaurice,G., The Rockin'Mouse: Integral 3D Manipulation on a Plane,

CHI'97, 311-318.

2. Buxton, W., Touch, Gesture, and Marking, in Readings in

Human-Computer Interaction: Toward the Year 2000. 1995,

Morgan Kaufmann Publishers. p. 469-482.

3. Buxton, W., Myers, B., A Study in Two-Handed Input,

CHI'86, 321-326.

4. Card, S., English, W., Burr, B., Evaluation of mouse, rate-

controlled isometric joystick, step keys, and text keys for text

selection on a CRT. Ergonomics, 1978. 21: p. 601-613.

5. Card, S., Robertson, G., York, W., The WebBook and the

Web Forager, CHI'96, 111-117.

6. Douglas, S., Kirkpatrick, A., MacKenzie, I.S., Testing

Pointing Device Performance and User Assessment with the

ISO 9241, Part 9 Standard, CHI'99, 215-222.

7. Douglas, S.A., Mithal, A.K., Ergonomics of Computer

Pointing Devices. 1997: Springer-Verlag.


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THANK YOU

Quantitative Analysis of Scrolling Techniques

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