HIGHDEFINITION TELEVISION

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HIGH-DEFINITION TELEVISION

• Dennis Pearson
• Executive Manager of Video
• November 7, 2006

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Transition From Analog To Digital Television

• National Television System Committee (NTSC)
• Developed standard for analog television
• Quality of service was dependent on
• Weather
• Equipment (television and antenna)
• Geographics
• Advanced Television Systems Committee (ATSC)
• Developed standards for digital HDTV and
• all 18 formats of digital TV
• Quality of service improved
• Created crystal clear pictures with much sharper
  image
• Cinema quality sound with stereo surround sound

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Transition From Analog To Digital Television

• Digital television (DTV) does not mean High
  Definition (HDTV)
• Digital Television and Public Safety Act
• Was signed February 8, 2006 by President Bush
• Established February 17, 2009 as final date for
  Over-The-Air (OTA) analog transmission
• Continued viewing on analog television will
  require
• An external antenna and converter box

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Digital Television (DTV)

• Standard Definition TV (SDTV)
• Aspect ratio is four feet wide by three feet high
  (43)
• Has a square appearance
• Pixels are rectangular-shaped
• Can be Interlaced or Progressive scanned
• Interlaced Scanning has the frame/picture
  composed of two fields
• The first field has a set number of odd lines
  (1,3,5)
• Second field has a set number of even lines
  (2,4,6)
• Odd lines are scanned in 1/60 of a second
• Even lines follow in the next 1/60 of a second
• This presents an entire frame/picture in 1/30 of
  a second
• Progressive Scanning will scan all horizontal
  lines on to the screen at one time

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Digital Television (DTV)

• High Definition TV (HDTV)
• US development of an HDTV standard underway since
  1987
• Has twice the vertical and horizontal picture
  resolution
• Always a screen ratio of 169 with a widescreen
  or letter box appearance
• Approximately 1/3 larger than 43
• Reduced motion artifacts (i.e. ghosting)
• Pixels are square-shaped and smaller in size,
  allowing HD picture to contain many more
  horizontal and vertical colored-dots
• Offers 5.1 independent channels of CD-quality
  stereo surround
• DTV and HDTV accept both Interlaced and
  Progressive Scan methods

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High Definition Programming Through INS

• Approximately 50 Broadcast HDTV channels
• Proposed program lineup may include
• ESPN
• ESPN2
• TNT
• Outdoor Channel
• Discovery
• HGTV
• Food Network
• NFL
• National Geographic
• HBO
• Showtime
• Starz

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High Definition Programming Through INS

• Approximately 55 or more DTV and HDTV OTA
  channels
• Over-The-Air markets include
• Des Moines
• Cedar Rapids
• Quad Cities
• Rochester/Mason City
• Omaha
• Sioux City
• Sioux Falls

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High Definition Programming Through INS

• Over-The-Air Station list is a working document
  and is subject to change
• Digital Re-Transmission Agreement required

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High Definition Programming Through INS

• Over-The-Air Channels List Continued

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Iowa Network Services HDTV Business Plan

• Current INS DTV network configuration
• Video and audio compressed using the Motion
  Pictures Expert Group (MPEG) standard
• MPEG-2 compression used for transporting 200 plus
  video and audio channels
• SD content set at 3.2 Mbps per channel
• HD not available due to 19Mbps requirements
• Nineteen OC3 transport streams are used for ATM
  and IP video signal through the INS fiber network

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Iowa Network Services HDTV Business Plan

• Future INS DTV and HDTV network configuration
• Deployment of MPEG-4 compression
• Approximately 40 savings in bandwidth
  requirements
• SD transrating rates reduced from 3.2Mbps to 1.6
  2.Mbps
• HD transrating rates reduced from 19Mbps to
  10Mbps
• Video transported by a Gigabit Ethernet(GigE)
  network

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Iowa Network Services HDTV Business Plan

• Future network for HDTV
• Flexibility in System Operator Network(s)
• Allows a diversified network architecture for
  deploying HDTV
• Copper
• Coax
• FTTP

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Iowa Network Services HDTV Business Plan

• Future network for HDTV
• Enhanced Services to the consumer
• Advanced Set-Top-Boxes
• Entone Set-Top-Box
• Three SD/HD stream Gateway box
• Recording format is MPEG-4
• External and/or internal hard drive
• 80GB plus on storage capabilities
• Scientific Atlanta Set-Top-Boxes
• Single stream SD/HD
• Single stream SD/HD with Personal Video
  Recording (PVR)
• Three stream Gateway box one HD and two SD with
  PVR

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THANK YOU