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Reverse Engineering Times Square
The Visitor ChannelDavid Mycue with Tom Piper
Academic Media Production ServicesMassachusetts Institute of Technology
Wednesday, May 21, 2003
Background
Times Square large-panel video reaches mass audience
Reverse engineer to reach an even larger audience
• Create “Visitor Channel” test platform
• Link Boston hotel, cultural, retail and entertainment venues.
NTSC video as a common denominator
NTSC was always a compromise (29.97 fps, interlacing)
Flawed model to distribute video and text
• Video signal not designed to carry data• NTSC standard reduces clarity of moving text content and/or images• Fails to capitalize on available efficiencies (text, images)• TV channels, News channels (Bloomberg, MSNBC, etc.) cannot easily adapt to data transmission
Video on PC-devices is easy
Data into video is inefficient
TV real estate is segmented into multiple data regions
Video reduced to 400x300
NTSC as data channel
NTSC as strict data channel
Screen graphics over NTSC squanders bandwidth
Underutilizes major resource
Visitor Channel “Reference project” opportunity
• Incorporate broadcast TV into multi-resolution (1920x1280 to 160x120) digital display
• Accessible by multiple devices (PDA, cell phone, etc.)
•Links to hotels
•Received at WiFi hotspots
Visitor Channel streamingHandles high quality video
Streaming “Big 3” handle MPEG2
DVD players on PCs play MPEG2 video
MPEG2 is ubiquitous transmission format
Forward compatible - MPEG2 streams can be HDTV
Visitor Channel streaming
Handles data much more flexibly and efficiently
Define multiple independent “real estate” areas
Handles text as text streams (RealText)
Handles images as image files (RealPix)
MPEG4 will add more features (primitives)