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Hd tv

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Hd tv

  1. 1. HDTV (HIGH DEFINITION TELEVISION)
  2. 2. WHY HIGH DEFINITION TV?  HDTV-is one of the most talked about topics today  It has twice the vertical and horizontal resolution of standard television  Thereby producing a picture with six times the number of picture element  This makes HDTV’s picture quality ten times better than regular television  HDTV-produces a much-improved color rendition compared to present television systems.
  3. 3. WHAT IS HDTV  HDTV- is high-resolution digital television with Dolby Digital surround sound. HDTV-is the highest digital television there is.  This allows HDTV to have extraordinary images with stunning sound This requires new production and transmission equipment at the HDTV stations.
  4. 4. HDTV TYPES  HDTV or Digital-ready TV  16:9 aspect ratio (width:height)  Displays:  720-line progressive scan signal OR  1080-line interlaced signal
  5. 5. INTERLACED  TV camera captures an image of 480 lines every 1/60th of a second  Allocated broadcast spectrum isn’t wide enough, so signal is compressed by discarding 1/2 of the lines  Transmits at 30 frames/sec with 2 fields/frame  Fields alternate every other resolution line
  6. 6. PROGRESSIVE  Lines of picture transmitted consecutively one line after another rather than 2 overlapping fields  Like computer monitor
  7. 7. WHO USES IT?  A Small Group of Marketers :Generally big ad budgets  Subzero :Refrigerator Company  BMW :Has 2 new 3 series spots in HD  Movie Studios :Content resided in 35mm
  8. 8. CHANNELS THAT USE IT
  9. 9. VIDEO RESOLUTIONS
  10. 10. SOURCES FOR HDTV  Digital cable  Video player with DVI, HDMI input  Digital satellite receivers  Video game systems with HDMI input XBOX 360 and Playstation 3  Windows Media High Definition  Video imaging processors
  11. 11. ASPECT RATIOS
  12. 12. CONCLUSION • As NTSC retires, HDTV programming, products, and production services will continue to grow exponentially. • Move will be cheaper, quicker, and easier as products and services become more widespread and people grow accustomed to the new technology. • HDTV has brought a more cinematic experience into viewer’s homes and with digital cinema, delivered the film industry a few of the benefits of television. However, HDTV still has much lower resolution than 70mm film. It’s a matter of time before some will begin pressuring for another increase in quality.

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