From Analog to Digital

An introduction to HDTV

Analog… (review)

6 MHz signalScan linesShadow maskPoor resolutionDigital to analog conversion (satellites, DVDs, etc…)

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

MPEG-2

Moving Picture Experts Group6 MHz bandwidth for analog TVCompression: Encoding and decoding

HDTV Stations

First: WRAL-HD in Raleigh, NCAll: FCC mandated by 2006Effects Consumers/communities Broadcasters Cable

HDTV DiffusionNov 1998 to May 1999 Nov 1999

May 2002 May 2006

Differences from Analog

Higher resolutionFormats and standards Aspect ratio, Wider, CD quality sound, downloads

Consumer Concerns

TelevisionsCompatibilityDVD and HDVDDigital cable and DBSConversion