From Analog to Digital

1
From Analog to Digital

• An introduction to HDTV

2
Analog (review)

• 6 MHz signal
• Scan lines
• Shadow mask
• Poor resolution
• Digital to analog conversion (satellites, DVDs,
  etc)

3
HDTV High Definition Television

• High-resolution digital television (DTV)
• 480i - 640x480 pixels interlaced
• 480p - 640x480 pixels progressive
• 720p - 1280x720 pixels progressive
• 1080i - 1920x1080 pixels interlaced

4
MPEG-2

• Moving Picture Experts Group
• 6 MHz bandwidth for analog TV
• Compression Encoding and decoding

5
HDTV Stations

• First WRAL-HD in Raleigh, NC
• All FCC mandated by 2006
• Effects
• Consumers/communities
• Broadcasters
• Cable

6
HDTV Diffusion
Nov 1999

• Nov 1998 to May 1999

May 2002
May 2006
7
Differences from Analog

• Higher resolution
• Formats and standards
• Aspect ratio, Wider, CD quality sound, downloads

8
Consumer Concerns

• Televisions
• Compatibility
• DVD and HDVD
• Digital cable and DBS
• Conversion