Virtual laser keyboard

A Brief Introduction to Virtual Laser Keyboard and it's Working Process

1. A Seminar on VIRTUAL LASER KEYBOARD Under the Supervision of G. Guru Prasad Assistant Prof., Department of ECE Presented by Pujari Ramesh 14121A04H1 IV YEAR ECE 1 DEPARTMENT OF ECE

2. Contents 2 Introduction Inside Technology Need for Virtual Keyboard System Architecture Features Uses Pro’s and Con’s Future Scope and Implementations References Conclusion DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

3. What is a Keyboard ? A Panel Of Keys that Operate a Computer or Typewriter How it Works..??? When you press a key, the top and bottom contact layers come together and the keyboard sends a signal to the computer that will be seen on the Display device 3 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

4. Keyboard overview 4 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

5. Inside keyboard The Processor in a keyboard has to understand several things that are important to the utility of the keyboard, such as.... Position of the key in the matrix The Speed at which to transmit the Typematics 5 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

6. Inside the Keyboard... 6 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

7. What is Virtual ? Virtual Virtual means something that’s NOT REAL . Its only the image (projection) of the real thing that one can see. The Thing is that one can see the image like an Orthogonal Object 7 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

8. Introduction A Virtual Keyboard actually a Key-in Device, roughly a size of fountain pen, which uses highly advanced laser technology It is just another example of today’s Computer trend of ‘smaller, smarter and Faster’. The New virtual Keyboard uses sensor technology and artificial intelligence to let user work on any surface as if it were a keyboard. 8 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

9. Introduction contd., In virtual keyboard camera tracks the finger movements of the typist to get the correct keystroke The Software and Hardware part recognises the typed character and pass it to the computer 9 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

10. Virtual keyboard Device 10 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

11. VIRTUAL LASER KEYBOARD 11 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

12. Need for Virtual Keyboard we can use it almost anywhere Virtual Keyboard uses the infrared & laser technology to project a full size keyboard onto any flat surface. Security of Passwords Prevents our username or password from being stolen, especially while using public computers, such as in internet cafes . As the sequence of the keys can be changed every time the page is refreshed. so they are useful from security point of view in Banks, ATM’s It is not restricted to the QWERTY touch-typing paradigm adjustments can be made to the software as such the DVORAK keyboard 12 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

13. Technology inside VLK... The System Comprises of Three Modules Sensor Module IR-Light Source The Pattern Projector 13 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

14. Overview of Device 14 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

15. Sensor Module S erves as the Eye of Keyboard perception technology Operates by locating the user’s fingers in 3-D space and tracking the intended keystrokes Keystroke information processes and can then be output to host 15 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

16. IR-Light source Emits a beam of light Designed to Overlap the area on which the keyboard pattern projector or printed image resides Helps in Recognising the Hand Movements and the pressing of keys 16 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

17. Pattern Projector Projects the image of the keyboard Image can be projected on a flat surface The Projected image is that of a standard QWERTY keyboard, with all the keys and control functions as in the keyboard 17 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

18. System Architecture 3-D Range Camera's is placed several cms over the input surface, with a well-defined angle facing the working area Size of the working area , limited by spatial resolution of the camera i.e., 15 cm X 25 cm ,which is comparable to a full-size laptop computer keyboard. Display Projector is mounted on the camera, facing the same area which would generate the visual feedback for the keyboard and input information 18 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

19. Virtual Laser Keyboard System Overview 19 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

20. How it Works ? Two Projections on to the flat surface in front of the projector. One is laser projection ., Holographic , and a few millimetre above that an invisible IR projection. When a key is pressed on the projection , IR Projection above the key is bounced back into the projector that interprets from the angle which key was actually computer either Bluetooth or through a standard USB connector 20 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

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22. Process of Key Detection 22 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

23. Features Can do work in darkness Wireless Compact size keyboard Rechargeable battery Allow the convenience full-size typing in tiny factor 23 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

24. Uses For those People who travel a lot, it is useful to carry being small in size and lighter in weight, even you can put in shirt’s pocket. Useful in hospitals where low noise is essential Gaming control and TV Remote controls To make note during smart classes, business meeting and in library as no one will hear your keying sound 24 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

25. Pro’s and Con’s Pro’s Can be used in no light areas Flexibility Speed Water proof High security Plug and use Con’s High cost Visible light may distract laser light Hard to use for beginners Flat surface necessary 25 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

26. Future Scope & Implementation Laser Keyboards Can be Embedded in ATM’s Can be used into space crafts as they are very lighter and smaller Can be embedded into digital lockers into banks, hostels for entering passwords and digital door lockers based on passwords. Used in 6 th Sense Technology device in which it is not depends on the surface. 26 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

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28. References http://www.smarttech.com http://www.technologyreview.com/articles http://www.laser-keyboard.com http://www.innovationworks.org/portfolio/virtuakeyboard 28 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

29. Conclusion A Virtual Keyboard claim to provide the CONVENIENCE AND COMPACTNESS with the advantages of a QWERTY keyboard. It is purely based on the true-3D optical range camera. Thus Virtual Keyboard will make typing Easier, Faster and almost a pleasure. DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING 29

30. THANK YOU 30 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING