GENERAL PRESENTATION<br />PANKAJ SINGH JARIAL<br />ROLL NO: B2703<br />B-TECH(IT)MBA<br />
Television<br />
PRINCIPLE<br />If you divide a still image into a collection of small colored dots, your brain will reassemble the dots in...
If we show the still images in rapid succession, the brain will reassemble the still images into a single, moving scene<br />
TV STEERING COIL<br />
IMAGE PAINTING<br />Raster scan<br />
Interlacing <br />Progressive scanning<br />VEDIO<br />
BROADCASTING SIGNALS<br />
Intensity information<br />Horizontal-retrace signals<br />Vertical-retrace signals<br />SIGNAL HENCE CALLED AS COMPOSITE ...
BLACK AND WHITE<br />
COLORED SIGNAL<br />
luma represents the brightness in an image<br />Luma is typically paired with chroma<br />Luma represents the achromatic i...
COLOR SUBSAMPLING<br />
Conventional CRT sets display around 480 visible lines of pixels.<br />Analog pictures are interlaced<br />Converting vide...
Different frequency for digital broadcast<br />Each broadcaster has an analog TV channel and a digital TV channel<br />A b...
480i - The picture is 704x480 pixels, sent at 60 interlaced frames per second (30 complete frames per second). <br />480p ...
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General presentation

  1. 1. GENERAL PRESENTATION<br />PANKAJ SINGH JARIAL<br />ROLL NO: B2703<br />B-TECH(IT)MBA<br />
  2. 2. Television<br />
  3. 3. PRINCIPLE<br />If you divide a still image into a collection of small colored dots, your brain will reassemble the dots into a meaningful image.<br />
  4. 4. If we show the still images in rapid succession, the brain will reassemble the still images into a single, moving scene<br />
  5. 5.
  6. 6.
  7. 7. TV STEERING COIL<br />
  8. 8. IMAGE PAINTING<br />Raster scan<br />
  9. 9. Interlacing <br />Progressive scanning<br />VEDIO<br />
  10. 10. BROADCASTING SIGNALS<br />
  11. 11. Intensity information<br />Horizontal-retrace signals<br />Vertical-retrace signals<br />SIGNAL HENCE CALLED AS COMPOSITE VEDIO SIGNAL<br />SIGNAL CONTAIN ??<br />
  12. 12. BLACK AND WHITE<br />
  13. 13. COLORED SIGNAL<br />
  14. 14.
  15. 15. luma represents the brightness in an image<br />Luma is typically paired with chroma<br />Luma represents the achromatic image without any color, while the chroma components represent the color information<br />CHROMA AND LUMA<br />
  16. 16. COLOR SUBSAMPLING<br />
  17. 17. Conventional CRT sets display around 480 visible lines of pixels.<br />Analog pictures are interlaced<br />Converting video to analog format lowers its quality<br />worst computer monitors have more resolution than the best analog TV <br />The best computer monitors are able to display up to 10 times more pixels than that TV set<br />WHATS WRONG WITH ANALOG TV<br />
  18. 18.
  19. 19. Different frequency for digital broadcast<br />Each broadcaster has an analog TV channel and a digital TV channel<br />A broadcaster can send a single program at 19.39 Mbps<br />A broadcaster can divide the channel into several different streams<br />DTV<br />
  20. 20. 480i - The picture is 704x480 pixels, sent at 60 interlaced frames per second (30 complete frames per second). <br />480p - The picture is 704x480 pixels, sent at 60 complete frames per second. <br />720p - The picture is 1280x720 pixels, sent at 60 complete frames per second. <br />1080i - The picture is 1920x1080 pixels, sent at 60 interlaced frames per second (30 complete frames per second). <br />1080p - The picture is 1920x1080 pixels, sent at 60 complete frames per second. <br />Different formats<br />

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