   What’s the difference between DTV and HDTV?
   So what do I need to watch HDTV at home?
   HDTV Overview
   Types o...
Q. Is DTV and HDTV the same? – A. HDTV is a segment of DTV
DTV (Digital Television) broadcasts include SDTV (standard defi...
Aspect ratio - Standard television has a 4:3 aspect ratio -- it is four units wide by
three units high. HDTV has a 16:9 as...
   HDTV is High Definition TV
   HDTV is available “free (over the air)” or via cable,
    satellite or other services
...
   A High Definition TV
   An HDTV signal from a provider or HD disk player
   An HDTV tuner/display screen


        H...
   HDTV has higher resolution than conventional TV
     Conventional TV = 480i
      ▪ 480 vertical resolution x 720 pix...
   Interlaced screens produce their        Early televisions were unable to
    images by displaying every other line   r...
 Progressive scan screens display every
  line from top to bottom
                                              Progressi...
Until recently TV resolution didn’t matter much. The resolution on most TV sets before the
  introduction of DTV was prett...
   CRT HDTV
   Flat Panel TV’s
     LCD
     Plasma
   Projection TV’s
     LCD Rear Projection
     DLP Projection...
 Flat Screens
 Large Cabinets
 Wide viewing angles
 Outstanding Picture
  Quality
 Capable of producing
  true blacks...
 Slim design and
  lightweight
    Place them
     anywhere
 Wide viewing angles
 Good energy
  efficiency

 Liquid Cr...
 Super Slim design and
  lightweight
 Bright Picture
 Deep Blacks
 Eco-Friendly
    Contains no mercury or
     lead
...
• Intense colors
    – Can display up to 68
      million colors
• Slim design
    – Sometimes no more than
      4 or 5” ...
 Space saving design
   But still larger
 Impressive brightness
  and contrast
 Advanced inputs
   HDMI
 Very good e...
 Space saving design
 Impressive black levels,
  contrast ratio and picture
  uniformity
 Bright Picture
 Advanced inp...
Coaxial RF cable can be used to connect
antennas, cable boxes, VCRs, TVs, DVD
players, DVD recorders and DVRs. Coaxial
RF ...
Composite cables plug into the composite
video jacks found on many kinds of A/V
components, including DVD players, VCRs,
D...
S-Video cables feature round, 4-pin
connectors, and transmit the chrominance
(color) and luminance (brightness) of a video...
Component video cable , found on most DVD
players and recorders and some DVRs, deliver
better detail and color accuracy th...
DVI stands for (D)igital (V)ideo (I)nterface. DVI is a popular form of video interface
technology made to maximize the qua...
Used to connect Hi-Def equipment like DVD players,
HDTV tuners, AV receivers and HDTVs to deliver
crystal-clear, all-digit...
Tv 101[1]
Tv 101[1]
Tv 101[1]
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Tv 101[1]

  1. 1.  What’s the difference between DTV and HDTV?  So what do I need to watch HDTV at home?  HDTV Overview  Types of TV Resolution  Types of SDTV and HDTV Displays  Common TV Connections
  2. 2. Q. Is DTV and HDTV the same? – A. HDTV is a segment of DTV DTV (Digital Television) broadcasts include SDTV (standard definition), EDTV (enhanced definition) and HDTV (high definition). Digital TV just means the image has been digitized and is no longer being sent by analog means. The broadcast resolution determines the picture quality. Current analog standard TV’s will display DTV with a converter box but cannot show HDTV because the TV resolution is too low.
  3. 3. Aspect ratio - Standard television has a 4:3 aspect ratio -- it is four units wide by three units high. HDTV has a 16:9 aspect ratio, more like a movie screen. Resolution - The lowest standard resolution (SDTV) will be about the same as analog TV. The highest HDTV resolution is 1920 x 1080 pixels. HDTV can display about ten times as many pixels as an analog TV set. Frame rate - A set's frame rate describes how many times it creates a complete picture on the screen every second. Common terms are interlaced and progressive. The lowest quality digital format is about the same as the highest quality an analog TV can display.
  4. 4.  HDTV is High Definition TV  HDTV is available “free (over the air)” or via cable, satellite or other services  Better quality picture, more information  Higher Resolution than SDTV
  5. 5.  A High Definition TV  An HDTV signal from a provider or HD disk player  An HDTV tuner/display screen HDTV Provider: Over the Air or Cable Service or Satellite or Blu-Ray Player
  6. 6.  HDTV has higher resolution than conventional TV  Conventional TV = 480i ▪ 480 vertical resolution x 720 pix/line ▪ 30 frames per second  HDTV resolutions are most commonly 1080i and 720p  1080i = 1080 vertical res x 1920 pix/line, 30fps  720p = 720 vertical res x 1280 pix/line, up to 60fps
  7. 7.  Interlaced screens produce their Early televisions were unable to images by displaying every other line refresh at high speeds and of resolution from top to bottom were limited to lower frame rates which could cause flicker. Interlacing helped reduce this effect by splitting the frames into odd and even rows. TV’s will project these images odd lines first and then even lines. When the image is moving the lines offset each other resulting in smoother video. Interlacing is still used today by all TV analog broadcasts and many cable systems. The major disadvantage of interlaced images is a reduction in vertical display resolution.
  8. 8.  Progressive scan screens display every line from top to bottom Progressive scan displays all of the lines of each frame. By progressively showing each frame on screen every 60th of a second rather than interlacing the image with alternate lines every 30th of a second. The result is a smoother, more detailed image on screen. Advantages of Progressive Scan Progressive scan (1080p) is now  Higher vertical resolution used on HDTV with Blu-Ray  Less artifacts or ‘Twitter’ (flicker) players and select satellite  Better picture quality with higher resolutions broadcasts.  Better looking still images
  9. 9. Until recently TV resolution didn’t matter much. The resolution on most TV sets before the introduction of DTV was pretty much the same. But with the introduction of DTV that has all changed. The chart below shows some of the different TV resolutions with HDTV starting at 720i (1280x720 interlaced). The higher the number the higher the resolution…the crisper the picture. Name Resolution Scanning Aspect Ratio 480i 640 x 480 Interlaced 4:3 (1.33) Conventional TV Conventional 480p 640 x 480 Progressive 4:3 (1.33) TV 720i 1280 x 720 Interlaced 16:9 (1.78) 720p 1280 x 720 Progressive 16:9 (1.78) 1080i 1920 x 1080 Interlaced 16:9 (1.78) 1080p 1920 x 1080 Progressive 16:9 (1.78) 1080p is the highest resolution non-interlaced picture available. Resulting in the best HDTV picture currently on the market.
  10. 10.  CRT HDTV  Flat Panel TV’s  LCD  Plasma  Projection TV’s  LCD Rear Projection  DLP Projection TV’s
  11. 11.  Flat Screens  Large Cabinets  Wide viewing angles  Outstanding Picture Quality  Capable of producing true blacks  No danger of burn-in A vacuum tube in which a hot cathode emits electrons that are accelerated as a beam through a relatively high voltage anode, further focused or deflected electro statically or electromagnetically, and allowed to fall on a phosphorescent screen.
  12. 12.  Slim design and lightweight  Place them anywhere  Wide viewing angles  Good energy efficiency Liquid Crystal Displays sandwich a layer of crystals between polarized glass and use external backlight
  13. 13.  Super Slim design and lightweight  Bright Picture  Deep Blacks  Eco-Friendly  Contains no mercury or lead  Low power consumption  40% less power used than non LED LCD TV’s Liquid Crystal Displays sandwich a layer of crystals between polarized glass and use an external LED backlight
  14. 14. • Intense colors – Can display up to 68 million colors • Slim design – Sometimes no more than 4 or 5” thick – Place them anywhere • Great contrast ratios • Wide viewing angles • Good energy efficiency Display is made of thousands of tiny, glass, plasma gas filled chambers that glow
  15. 15.  Space saving design  But still larger  Impressive brightness and contrast  Advanced inputs  HDMI  Very good energy efficiency TV signals are sent to miniature Red, Green and Blue LCD chips, then illuminated with an ultra-high intensity lamp
  16. 16.  Space saving design  Impressive black levels, contrast ratio and picture uniformity  Bright Picture  Advanced inputs  HDMI  Low Maintenance  No alignment needed  Very good energy efficiency Digital Light Processing TV’s use millions of tiny mirrors tuned to be either ON or OFF thousands of times a second. Each mirror acts as a pixel; colors are created by passing a color wheel in front of the light source for each mirror
  17. 17. Coaxial RF cable can be used to connect antennas, cable boxes, VCRs, TVs, DVD players, DVD recorders and DVRs. Coaxial RF cable carries video and stereo audio signals on one cable. It is the lowest quality cable for carrying audio and video signals and should only be used when connecting to a TV that has no other inputs
  18. 18. Composite cables plug into the composite video jacks found on many kinds of A/V components, including DVD players, VCRs, DVD recorders, A/V receivers, and DVRs. They are better to use than coaxial RF cable, but are still the 2nd lowest quality. These jacks are often yellow, and are attached to red and white stereo audio jacks. These connectors are found on virtually every component in a home TV set up, and the audio jacks are commonly used with other video cables.
  19. 19. S-Video cables feature round, 4-pin connectors, and transmit the chrominance (color) and luminance (brightness) of a video signal separately. As a result, they provide better color accuracy and detail than either RF or composite connections do. Most new TVs and many DVD recorders and DVRs include S- Video. A common home set up is to use S-Video and RCA audio to connect a DVD Recorder or DVR to a TV or A/V Receiver.
  20. 20. Component video cable , found on most DVD players and recorders and some DVRs, deliver better detail and color accuracy than you get with RF coax, composite, or S-video. They do this by splitting the video signal into three parts, with each part transmitted via its own cable. Unlike the other three types of connections, component video is capable of passing high-definition and progressive-scan video signals. In order to use this cable with a DVD Recorder or DVR you must have component inputs on your TV.
  21. 21. DVI stands for (D)igital (V)ideo (I)nterface. DVI is a popular form of video interface technology made to maximize the quality of flat panel LCD monitors and modern video graphics cards. DVI cables are becoming increasingly popular with video card manufacturers, and most cards nowadays include both a VGA and a DVI output port. In addition to being used as the standard computer interface, the DVI standard was, for a short while, the digital transfer method of choice for HDTV, EDTV, Plasma Display, and other ultra-high-end video displays for TV, movies, and DVDs. The digital market is now swinging towards the HDMI interface for high-definition media delivery, and DVI is being again constrained to the computer market. DVI does not support audio transfer.
  22. 22. Used to connect Hi-Def equipment like DVD players, HDTV tuners, AV receivers and HDTVs to deliver crystal-clear, all-digital, high-definition video and multi- channel audio in one cable. HDMI can carry standard- definition and high-definition digital video signals. HDMI is also capable of carrying digital audio

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