quantitative analysis of scrolling techniques
TRANSCRIPT
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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