An Intro To Television

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This is Presented By Vishnu, Who s member of KanchiLUG... It is created by Open Office Impress

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An Intro To Television

  1. 1. INTRODUCTION TO TELEVISION - K. Vishnu MCA        KanchiLUG Member    
  2. 2. Television history was not overnight and not invented by a single inventor.    
  3. 3. MECHANICAL TELEVISION    
  4. 4. - John Logie Baird (1920)   The idea of using arrays of transparent rods to transmit images for television.    
  5. 5. - Charles Francis Jenkins (1923)       Radiovision claimed to have transmitted the earliest moving  silhouette images.    
  6. 6. ELECTRONIC TELEVISION CRT    
  7. 7. Electronic television is based on the development of the cathode ray tube.    
  8. 8. Now it is the picture tube found in modern TV sets.    
  9. 9. MAIN INVENTORS OF CRT TELEVISION    
  10. 10. Vladimir Kosma Zworykin (1925)    
  11. 11. Philo T. Farnsworth (1939)    
  12. 12. 1. Glass Tube 2. Electron Gun 3. Electron Beam 4. Upper & Lower Leds 5. Shadow Mask 6. Phosporous Coated Screen    
  13. 13.    
  14. 14.    
  15. 15. LCD TELEVISION    
  16. 16. * An LCD TV is a flat panel TV * It based on liquid crystal display * Inter active properties # liquid crystals # light    
  17. 17.    
  18. 18. * The liquid crystals are broken down into small particles. * These smaller particles are known as pixels. * Crystals are located in the middle of two electrodes.    
  19. 19.    
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  21. 21.    

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