Surface Computing

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The way we use computers today will soon change. The technology of the future will allow us to interact with the computer on a whole different level from what we are used to. The tools we use to communicate with the computer - such as the mouse and the keyboard, will slowly disappear and be replaced with tools more comfortable and more natural for the human being to use. That future is already here. The increase rate of how touch screen hardware and applications are used is growing rapidly and will break new grounds in years to come. This new technology requires new ways of detecting inputs from the user-inputs which will be made out of on-screen gestures rather than by the pressing of buttons or rolling mouse wheels.
The name Surface comes from "surface computing”. Surface computing uses a blend of wireless protocols, special machine-readable tags and shape recognition to seamlessly merge the real and the virtual world. Multi-touch technology is an advanced human-computer interaction technique that recognizes multiple touch points and also includes the hardware devices that implement it.


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Surface Computing

  1. 1. SURFACE COMPUTINGYOU ARE THECONTROLLERMULTITOUCH TECHNOLOGY
  2. 2. –new way of working with computers that moves beyondthe traditional mouse-and-keyboard experienceNATURAL USER INTERFACEINTERACTION WITH DIGITAL CONTENT IN A MORE HUMAN WAYLEVERAGE OUR KNOWLEDGE ABOUT EVERYDAY OBJECT FORINTERACTION WITH DIGITAL WORLDTOUCH AND GESTURES RATHER THAN PHYSICAL DEVICES LIKEMOUSE AND KEYBOARD
  3. 3. GraphicalUser InterfaceCommand line1985PC1990GUIMultiple WindowsMenus1995InternetHyperlinksSearch Engines2001 Digital DecadeSURFACE TABLE.NETSmart devicesNaturalUser InterfaceGESTURE COMMANDSTOUCH CONTROL
  4. 4. 2001: Microsoft researchers “Steve Bathiche andAndy Wilson” developed idea of interactive tablethat could understand the manipulation of physicalpieces.2003: 1st prototype model named T1 was born2005 :Attention turned to its form factor-Tub proto type was designed.2007:Final structure finalized, interactivetabletop device was built that seamlesslybrings both the physical and virtual worldsinto one.T1 PROTOTYPETUB PROTOTYPE
  5. 5. Microsoft Surface is a surface computing platform that responds tonatural hand gestures and real world objectDirect InteractionMulti-TouchContactObjectrecognitionMulti-UserExperience•FOUR MAJOR COMPONENTS
  6. 6. TOUCH SENSING•RESISTIVE•CAPACITIVE•OPTICALMOTION SENSING•OPTICAL SENSING•RADIO SENSING•THERMAL SENSING
  7. 7. Controller Decides Position of TouchSame on Second screen for YUniform Voltage on First Screen for XContact is MadeUser Presses DownResistive Touchscreen
  8. 8. WORKINGOne screen for XAnother screen for YBoth screen electrodes acquirea specific voltage valueController categorizes electricaldataSoftware analyze data valuesand decides touch position
  9. 9. Capacitive Touch TechnologyBEFORETWO TYPES1.SURFACE CAPACITIVE TOUCH2.PROJECTED CAPACITIVE TOUCH
  10. 10. The controller precisely calculates the proportion of the current passed throughthe four electrodes and figures out the X/Y coordinate of a touch pointTheoretically amount of current that drifts through the four electrodes shouldbe proportional to the distance from the touch point to the four cornersFinger touch draws a slight amount of current is drawnA human body is an electric conductor4 Electrodes are at 4 corners1.Surface Capacitance
  11. 11.  Capacitor forms Current flows Controller Determines locationof touch by ratio of currents The XY coordinates are decidedITOGlass surfaceFingeriivAR1iBEFORE:AFTER:
  12. 12. 2. Projected Capacitance• Two parallel ITO layers• Two sheets of glass• E Field is projected through glass• Finger couples with E field• Capacitance changes• Controller decides touch locationITOAirITOITOGlass SurfaceFingerC1CtCnew=(C1*Ct) / (C1+Ct)
  13. 13. Separate touch padsare arranged accordingto A coordinate system.Every point on thegrid generates its ownsignal when touchedand relays that signal tothe controller.This allows thecontroller to determinethe location andmovement ofsimultaneous touches inmultiple locations
  14. 14. A process by which light istrapped within a medium andcan be interrupted by a thirdmedium of higher reflectiveindex to cause light to escape.Frustrated Total Internal ReflectionAn Example
  15. 15. IR LEDIRLEDITM–GIDA RECEPTIONSELECTCLASSTOLOCATEA31 4th FloorRoom 405Fingertouches thispointBlobscreatedIR camera detects these blobsPlexiglassStudent id
  16. 16. FUN & ATTRACTIVERIGHT SET OF FUNCTIONSTHAT FULFILL YOUR NEEDSEASY TO LEARN&REMEMBERHOW TO USE ITSOFTWARE STILL EMERGINGTO COPE UP WITH HARDWAREFAR DIFFERENT FROMTRADITIONAL TECHNOLOGY
  17. 17. TOUCHING THE FUTURE SKY IS THELIMIT
  18. 18. WHAT SHOULD BE THE AIM OF SUCH TECHNOLOGICALDEVELOPMENT?
  19. 19. THANK YOUFOR YOUR ATTENTIONANY QUERRIES?Work with machines in the human way

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