UNDERSTANDING THE CHANGE The Digital Television Revolution CREATED AND PRESENTED BY TRACY CROUTHAMEL.

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Presentation transcript:

UNDERSTANDING THE CHANGE The Digital Television Revolution CREATED AND PRESENTED BY TRACY CROUTHAMEL

The Basics of Transmitting a TV Signal Transmission steps  Video camera  Rasterizes  Horizontal / Vertical sync

The Beauty of a Digital Picture Resolution  Pixels  Refresh rate  525 Digital vs. analog  Interlaced vs. progressive scanning INTERLACED PROGRESSIVE

Analog Vs. Digital Picture ANALOGDIGITAL

The Beauty of a Digital Picture Our vision Analog and digital ratios  4:3  16:9

Analog Vs. Digital Sound Records Cassette 2 channel stereo CDs MP3 5.1 Surround Sound ANALOGDIGITAL

Freedom! Compressed information Multicasting Public safety Interactive TV

Free TV No more static All or nothing

Summation Resolution Pixels Progressive scanning 16:9 ratio Multicasting No more static Interactive TV Analog TV stinks

The More You Know How Television Works

Sources er/home/gaming/aspect_ratio_compare.jpg er/home/gaming/aspect_ratio_compare.jpg tml tml ansition ansition electronics/hdtv/how-does-digital-tv-work.shtml electronics/hdtv/how-does-digital-tv-work.shtml

Sources om_content&task=view&id=14&Itemid=27 om_content&task=view&id=14&Itemid=27 Digital-TV-Work/5f6a b282-1c7a- 3a5b Digital-TV-Work/5f6a b282-1c7a- 3a5b Straubhaar, Joseph and Robert LaRose. Media Now: Understanding Media, Culture, and Technology. Belmont, CA: Wadsworth, 2009.