High Definition Television

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High Definition Television
By. Pravin Chandrasegaram & Rodel Orpiano

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High Definition Television

  1. 1. High Definition Television By: BalappravinChandrasegaram& RodelA.Orpiano Friday November 27 2009 <br />
  2. 2. Table of Contents<br />- What is High Definition Television<br />- Pixels<br /><ul><li>Scanning Systems
  3. 3. Progressive Scanning
  4. 4. Interlaced scanning
  5. 5. Blu-ray
  6. 6. High Definition Programming
  7. 7. Tips for Purchasing HD Television
  8. 8. Summary and Conclusion
  9. 9. References
  10. 10. Questions</li></li></ul><li>What’s High Definition Television?<br /> High definition television (or HDTV) is a digital television broadcasting system with higher resolution that standard-definition television. (2)<br /> Digital cable comes in three formats - standard, enhanced, and high definition.<br /> A high definition signal is broadcasted in a<br /> 16:9 aspect ratio rather then the old 4:3 ratio.<br />
  11. 11. Pixels<br />A pixel is the smallest item of information in an image.<br />
  12. 12. Pixels<br />Frame size in pixels is defined as number of horizontal pixels × number of vertical pixels, <br /> for example 1280 × 720 or 1920 × 1080. (3)<br /><ul><li>1080p can be referred to as full HD</li></li></ul><li>Scanning system<br />There are two types of scanning systems which are noted with the letter p for progressive scanning or ifor interlaced scanning.<br />
  13. 13. Progressive scanning<br />Progressive or non-interlaced scanning is a method for displaying, storing or transmitting moving images in which all the lines of each frame are drawn in sequence.(4)<br />
  14. 14. Interlaced scanning<br />Interlaced is a technique of improving the picture quality of a video signal without consuming extra bandwidth. (5)<br />Interlaced video was designed for display on CRT televisions. (5)<br />
  15. 15. Progressive or Interlaced scanning, which is better?<br />Progressive scanning is better than interlaced scanning because it processes the images in half the time. <br />This faster scanning rate produces higher clarity and color in the picture.<br />
  16. 16. Blu-ray<br />Blu-ray player plays movies in high definition<br />All movies released on Blu-ray can produce a full 1080p High Definition picture when the Blu-ray Disc player is connected to a 1080p HDTV with a HD MI cable. (6) (7)<br />
  17. 17. Blu-ray<br />Current generation video game consoles such as Sony Playstation 3 and Xbox 360 are able to display 1080p through HDMI ports (8) (9)<br />
  18. 18. High Definition Programming (10)<br />
  19. 19. Tips for Purchasing HD Television<br />Top of the line HDTV <br /> - minimum of 1280 x 720 pixels and atleast one HDMI port.<br />Slim and Wide is in.<br /> - Plasmas display true blacks while LCD, which costs more per inch, is typically more brighter. <br />Tune in and out <br /> -make sure your HDTV has a built-in tuner. <br />
  20. 20. More Tips<br />Connections <br /> - HDTVs have component (red, green and blue) video inputs to connect to your cable, double check to make sure there is two or more video inputs for your video games and outputs for your surround sound.<br />Surround your self with sound<br /> -HDTV boasts theater-like surround sound.<br />
  21. 21. Final Tip<br />Testing your HDTV<br />Test drive your HDTV purchases by popping in DVD that is colorful and fast-moving. Titles like “Batman” work best.<br />You can also tune in to an HD channel like TSN or CBC.<br />
  22. 22. Summary and Conclusion <br />High definition is the top-level resolution offered within the digital television category. <br />High definition television programming is becoming more available and popular by the day.<br />
  23. 23. References<br />(1) http://static.howstuffworks.com/gif/hdtvgallery7.jpg<br />(2) http://en.wikipedia.org/wiki/High_definition_television<br />(3) http://en.wikipedia.org/wiki/High-definition_television<br />(4) http://en.wikipedia.org/wiki/Progressive_scan<br />(5) http://en.wikipedia.org/wiki/Interlaced_scanning<br />(6) http://en.wikipedia.org/wiki/1080p<br />(7) http://www.gadgetreview.com/wp-content/uploads/2009/09/blu-ray-logo-580x2991.jpg<br />(8)<br /> http://en.wikipedia.org/wiki/1080p#Video_game_consoles<br />(9) http://images.chron.com/blogs/gamehacks/playstation-3.jpg<br />(10) http://www.supersatelliteselection.com/images/nuevas/add6.jpg<br />
  24. 24. Thank You<br />Questions ?<br />

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