The Digital TV Changes

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The Digital TV Changes
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• Analog is old way/Digital new way
• When you buy a TV, if you want HD (High
  Definition) you need to buy a TV that is HD.
  Just buying a digital TV does NOT get you to see
  the best quality which is HD.
• Most programs will be recorded in HD, but not
  all..(Like talk shows)

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HDTV Reception Methods

• HDTV reception Over the Air
• HDTV through Local Cable Company
• HDTV over Satellite

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• HDTV reception Over The Air
• Over the Air is when you set up an antenna to get
  broadcasts from a local tower. If you get signals
  OTA you will not have to pay a subscription to a
  cable or satellite company and the programming is
  completely free.
• If you decide to do this you will have to
• Buy an antenna that is satisfactory for your
  location compared to the broadcast towers near
  you.
• Buy a Set-Top-Box that is capable of receiving
  and decoding High Definition channels over the
  air.
• Buy a High Definition TV to view the signals.
• Many people get both Satellite and OTA signals
  since OTA does not cost anything except the
  initial setup! Plus, if you are getting HDTV over
  satellite that may mean you already have a
  Set-Top-Box that can decode OTA signals too.

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• HDTV through Local Cable Companies
•  You can get HDTV through your local Cable
  Company such as Cox Communications.
• If you decide to do this you will have to
• Get a subscription from the cable provider who
  supports HDTV.
• Buy or rent a Set-Top-Box that is capable of
  decoding High Definition channels.
• Buy a High Definition Television to view the
  signals.

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• HDTV over Satellite
•  A satellite company such as DirecTV or Dish
  Network will allow you to get high definition
  programming.
• If you decide to get HDTV programming from a
  satellite company you will have to
• Get a subscription from the specific satellite
  company that includes HDTV programming.
• Buy a satellite dish that is capable of receiving
  HDTV signals from the satellite company you wish
  to receive high definition broadcasts from.
• Buy a Set-Top-Box that is capable of decoding
  High Definition channels and is compatible with
  the specific satellite provider you choose.
• Buy a High Definition TV to view the signals.

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• Benefits of Digital
• The New Aspect Ratio
• Resolution
• Sound Quality
• Multicasting

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• The New Aspect Ratio
• Current televisions are based upon the aspect
  ratio of 43 and will be 3 feet high and 4 feet
  wide. With HDTV the aspect ratio is 169, making
  the image much wider than a normal TV. The new
  screen size is 33 wider to be exact.
• The increased width is a huge improvement because
  it allows you to view TV and movies as if you
  were watching them in a theater.

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• Resolution
• The usual TV can display a resolution of about
  210,000 pixels per image. High Definition TV's
  can go all the way up to a total of 2,073,600
  pixels per image. That is ten times the
  resolution and picture quality.
• In fact, instead of stretching these pixels out,
  they are crammed together so tight that
  resolutions get as high and as sharp as they do.

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• Sound Quality
• High Definition television also has 5.1 channels
  of CD-quality surround sound (left, right,
  center, left rear, right rear, and low frequency
  effects - AKA bass).
• With the older TV standard you only get two
  channels of audio, which is just enough to make
  it stereo. With HDTV you are listening to Dolby
  Digital/AC-3 which is the same that is used in
  most movie theaters, DVD players and home
  entertainment systems!

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• Multicasting
• Multicasting is when a broadcaster sends multiple
  signals out over the same channel. Usually when
  multicasting, the quality of the broadcast is
  less than that of HDTV, but it is almost always
  better than regular television.
• The benefit of multicasting is that a television
  station can air four or more signals at the same
  time and give you the choice of what you want to
  watch.
• Most local stations will now have 1 or more
  sub-stations.
• (Channel 24.1, Channel 24.2, etc.)

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TV Tips

• Be sure youre not buying just a monitor.
  Otherwise, youll have to buy a tuner too. You
  want a Digital TV with a tuner.
• If your HDTV set comes with picture-in-picture,
  you won't get high-def-picture-in-high-def-picture
  unless your set comes with two ATSC tuners.
• Generally, you don't want to sit closer to a 720p
  HDTV than twice the length of the screen
  diagonal.
• Have a professional calibrate your new TV.

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TV Tips

• LCD TVs are bright, which makes them a good
  choice if you watch TV in a brightly lit room.
  But if you're inclined to turn down the lights,
  you probably don't want the brightest set on the
  block. Plasma TVs and CRT TVs offer superior
  color capabilities without introducing the
  response-time (scene changes) issues that have
  long plagued LCD TVs.