WELCOME
PRESENTED BY: KARTHIKA  ASOK 13093439 S7,E.C GUIDED BY: MISS KRISHNA J (LECTURER, ECE,SIST)
TOUCH SCREEN WITH FEELINGS
ABSTRACT <ul><li>The theory, design and construction of a haptic display. </li></ul><ul><li>Creating texture sensations th...
CONTENTS <ul><li>Ordinary touch screen </li></ul><ul><li>TPaD- Tactile Pattern Display </li></ul><ul><li>Application </li>...
ORDINARY TOUCH SCREEN <ul><li>Can detect the presence and location of a touch </li></ul><ul><li>3 main components </li></u...
<ul><li>Touch sensor </li></ul><ul><li>Clear glass panel with touch responsive surface </li></ul><ul><li>Sensor generally ...
<ul><li>Controller </li></ul><ul><li>Small PC card ; connects PC & Touch sensor </li></ul><ul><li>Usually installed inside...
<ul><li>Software driver </li></ul><ul><li>Mouse -emulation type driver </li></ul><ul><li>Controller    Driver   O.S </li...
Available touch technology Analogue resistance Based sensor Capacitive- Based overlay sensor Acoustic  wave  sensors Optic...
<ul><li>Plastic overlays degrade image quality </li></ul><ul><li>More susceptible to damage </li></ul><ul><li>They require...
<ul><li>The name “Touch screen” is a misnomer </li></ul><ul><li>Touch screens & Touch pads fails to provide the sense of t...
TPaD-Tactile Pattern Display(cont...) <ul><li>It’s a novel technology </li></ul><ul><li>Creating texture sensations  </li>...
TPaD-Tactile Pattern Display(cont...) <ul><li>It uses vibration to create variable friction areas on a touch screen </li><...
TPaD-Tactile Pattern Display(cont...) CHARACTERISTICS OF TPaD
Piezo bending element and mount CHARACTERISTICS OF TPAD(CONT...) <ul><li>BENDING ELEMENT CONSTUCTION </li></ul>
<ul><li>DRIVING ELECTRONICS </li></ul>CHARACTERISTICS OF TPAD(CONT...) Vibration mode of bending element.
CHARACTERISTICS OF TPAD(CONT...) <ul><li>FINGER POSITION TRACKING </li></ul>
CHARACTERISTICS OF TPAD(CONT...) <ul><li>VIRTUAL TEXTURES </li></ul>
APPLICATIONS <ul><li>FOR BLINDS: </li></ul>An electrostatic haptic display  Electrotactile display of computer graphics
GraphiGlove — A tactile glove for computer graphics  VTD - Virtual Tactile Display Application(cont...)
<ul><li>FLEXIBLE TACTILE DISPLAY </li></ul><ul><li>Flexible-soft tactile display </li></ul><ul><li>Electro active polymer ...
<ul><li>Public & information displays </li></ul><ul><li>Retail & restaurant system </li></ul><ul><li>Control & automation ...
<ul><li>Virtual reality keyboard </li></ul><ul><li>Assistive technology </li></ul><ul><li>Tactile display cloth </li></ul>...
<ul><li>Tactile feedback </li></ul><ul><li>User friendly </li></ul><ul><li>High accuracy results in seamless user experien...
<ul><li>Large content suite & cost-effective  </li></ul><ul><li>Suitable for any commercial environment </li></ul><ul><li>...
DISADVANTAGES <ul><li>High power consumption </li></ul>
FUTURE SCOPE <ul><li>Reduce power consumption </li></ul><ul><li>TPaDs having much large surface area </li></ul>
CONCLUSION <ul><li>Ability of a piezoelectric bending element to perform the function of a T-PaD.  </li></ul><ul><li>The T...
REFERENCE <ul><li>http://efymagonline.com </li></ul><ul><li>Uma Gupta ”Take a tour to a world virtually real” in LFY magaz...
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Touch screen with feelings-T-PaD

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Touch screen with feelings-T-PaD

  1. 1. WELCOME
  2. 2. PRESENTED BY: KARTHIKA ASOK 13093439 S7,E.C GUIDED BY: MISS KRISHNA J (LECTURER, ECE,SIST)
  3. 3. TOUCH SCREEN WITH FEELINGS
  4. 4. ABSTRACT <ul><li>The theory, design and construction of a haptic display. </li></ul><ul><li>Creating texture sensations through variations in surface friction </li></ul><ul><li>Ultra sonic frequency, low amplitude vibrations between two flat plates </li></ul><ul><li>A reduction of friction will also occur between a human finger and a vibrating plate </li></ul><ul><li>Vibrating plate  Haptic interface </li></ul><ul><li>finger position and velocity feedback  on </li></ul><ul><li>the display  creation of spatial </li></ul><ul><li>texture sensations </li></ul>
  5. 5. CONTENTS <ul><li>Ordinary touch screen </li></ul><ul><li>TPaD- Tactile Pattern Display </li></ul><ul><li>Application </li></ul><ul><li>Advantage </li></ul><ul><li>Disadvantage </li></ul><ul><li>Future scope </li></ul><ul><li>Conclusion </li></ul>
  6. 6. ORDINARY TOUCH SCREEN <ul><li>Can detect the presence and location of a touch </li></ul><ul><li>3 main components </li></ul><ul><li>Touch sensor </li></ul><ul><li>Controller </li></ul><ul><li>Software driver </li></ul>
  7. 7. <ul><li>Touch sensor </li></ul><ul><li>Clear glass panel with touch responsive surface </li></ul><ul><li>Sensor generally has an electric current/signal going through it and touching the screen cause a voltage/signal change </li></ul><ul><li>Voltage change determines location of touch </li></ul>
  8. 8. <ul><li>Controller </li></ul><ul><li>Small PC card ; connects PC & Touch sensor </li></ul><ul><li>Usually installed inside the monitor </li></ul><ul><li>Controller determines what type of interface/connection needed </li></ul>
  9. 9. <ul><li>Software driver </li></ul><ul><li>Mouse -emulation type driver </li></ul><ul><li>Controller  Driver  O.S </li></ul>
  10. 10. Available touch technology Analogue resistance Based sensor Capacitive- Based overlay sensor Acoustic wave sensors Optical or infrared Near field technology (Mechanical force)
  11. 11. <ul><li>Plastic overlays degrade image quality </li></ul><ul><li>More susceptible to damage </li></ul><ul><li>They require frequent calibration </li></ul><ul><li>No feelings </li></ul><ul><li>Directness </li></ul><ul><li>Fast access </li></ul>ADVANTAGES DISADVANTAGES
  12. 12. <ul><li>The name “Touch screen” is a misnomer </li></ul><ul><li>Touch screens & Touch pads fails to provide the sense of touch of mechanical buttons, switches& Knobs </li></ul><ul><li>They have no shape, no texture& no clickiness. </li></ul><ul><li>They are dead to the finger </li></ul>This is what the TPaD enables………..
  13. 13. TPaD-Tactile Pattern Display(cont...) <ul><li>It’s a novel technology </li></ul><ul><li>Creating texture sensations </li></ul><ul><li>through variations in surface friction </li></ul><ul><li>Create the illusion of texture on </li></ul><ul><li>an unadorned piece of glass </li></ul><ul><li>The coefficient of friction between glass & finger tip is about 1 </li></ul><ul><li>It has no visible or audible texture </li></ul>
  14. 14. TPaD-Tactile Pattern Display(cont...) <ul><li>It uses vibration to create variable friction areas on a touch screen </li></ul><ul><li>It provides a layer of air between your finger & the screen which reduce the friction </li></ul><ul><li>The system tracks finger position & turns the vibration on & off </li></ul>
  15. 15. TPaD-Tactile Pattern Display(cont...) CHARACTERISTICS OF TPaD
  16. 16. Piezo bending element and mount CHARACTERISTICS OF TPAD(CONT...) <ul><li>BENDING ELEMENT CONSTUCTION </li></ul>
  17. 17. <ul><li>DRIVING ELECTRONICS </li></ul>CHARACTERISTICS OF TPAD(CONT...) Vibration mode of bending element.
  18. 18. CHARACTERISTICS OF TPAD(CONT...) <ul><li>FINGER POSITION TRACKING </li></ul>
  19. 19. CHARACTERISTICS OF TPAD(CONT...) <ul><li>VIRTUAL TEXTURES </li></ul>
  20. 20. APPLICATIONS <ul><li>FOR BLINDS: </li></ul>An electrostatic haptic display Electrotactile display of computer graphics
  21. 21. GraphiGlove — A tactile glove for computer graphics VTD - Virtual Tactile Display Application(cont...)
  22. 22. <ul><li>FLEXIBLE TACTILE DISPLAY </li></ul><ul><li>Flexible-soft tactile display </li></ul><ul><li>Electro active polymer </li></ul><ul><li>Advantage- doesn't require complex electronics </li></ul><ul><li>Efficient power usage </li></ul><ul><li>Cost-effectiveness </li></ul><ul><li>Easy fabrication </li></ul><ul><li>Disadvantage- low power </li></ul>Application(cont...)
  23. 23. <ul><li>Public & information displays </li></ul><ul><li>Retail & restaurant system </li></ul><ul><li>Control & automation system </li></ul><ul><li>Used as navigation aid </li></ul><ul><li>Computer based training </li></ul>Application(cont...)
  24. 24. <ul><li>Virtual reality keyboard </li></ul><ul><li>Assistive technology </li></ul><ul><li>Tactile display cloth </li></ul><ul><li>Advertisement </li></ul>Application(cont...)
  25. 25. <ul><li>Tactile feedback </li></ul><ul><li>User friendly </li></ul><ul><li>High accuracy results in seamless user experience </li></ul><ul><li>Ability to distinguish between parts of the human body </li></ul><ul><li>Secure to work in high traffic environment </li></ul>ADVANTAGES
  26. 26. <ul><li>Large content suite & cost-effective </li></ul><ul><li>Suitable for any commercial environment </li></ul><ul><li>Can be used with projectors / LCD TVs </li></ul><ul><li>The perfect advertising medium </li></ul>Advantages(cont...)
  27. 27. DISADVANTAGES <ul><li>High power consumption </li></ul>
  28. 28. FUTURE SCOPE <ul><li>Reduce power consumption </li></ul><ul><li>TPaDs having much large surface area </li></ul>
  29. 29. CONCLUSION <ul><li>Ability of a piezoelectric bending element to perform the function of a T-PaD. </li></ul><ul><li>The T-PaD has a broad range of controllable friction levels </li></ul><ul><li>Texture sensations are created by both spatial shear force patterns and velocity dependent shear force patterns on the display </li></ul><ul><li>Future work can be done to reduce the power consumption </li></ul><ul><li>Then only it can be used in mobile devices which works in mW power range. </li></ul><ul><li>. </li></ul>
  30. 30. REFERENCE <ul><li>http://efymagonline.com </li></ul><ul><li>Uma Gupta ”Take a tour to a world virtually real” in LFY magazine, issue jan,01,2006 </li></ul><ul><li>J. Edward Colgate ”Tactile Pattern Display(26012/27004/27005/27025)” </li></ul><ul><li>http://www.wikepedia.org </li></ul><ul><li>http://touchmagixmedia.com </li></ul><ul><li>Jones W.D ”Touch screen with feelings”; Spectrum, IEEE, Vol 46,issue5,2009 </li></ul><ul><li>http://www.seminar4you.info </li></ul>
  31. 31. thank u thank u

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