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EOD


Obstacles to EOD

Architected Solutions

 

Real-Time Capture

Compression Real-Time Behavior
MPEG-2 Best compression ratios are not obtained with real-time processing
MPEG-4 Cannot be processed in real time
ZPEG Best compression ratios, guaranteed quality, real-time performance

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Disk Storage

Compression Real-Time Behavior
MPEG-2 Requires about 2.7GB per hour
MPEG-4 Better storage capability, but no quality guarantee (may not be suitable for production distribution)
ZPEG Requires about 300MB per hour. Records in real time. Can transcode to MPEG-2 on playback.

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Switching Costs

Compression Real-Time Behavior
MPEG-2 Requires 6Gb/sec per customer
MPEG-4 Requires 1Gb/sec per customer
ZPEG Requires 500Kb/sec per customer. Can switch over IP networks. Every customer gets a permanent switched connection. 

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Set-top Box

Compression Real-Time Behavior
MPEG-2 Expensive, high-speed decoding.
MPEG-4 Must support both MPEG-2 and MPEG-4.
ZPEG Can replace all functions (broadcast, VOD, Web, telephony) with a single low-cost interface. Coexists with other interfaces.

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Shared Bandwidth

Compression Typical Utilization of 850MHz Medium
Analog Video 600 MHz (100 channels)
Digital Video 150 MHz (150 channels)
VOD 100 MHz (500 users)

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Last Mile: Today

Separate paths support broadcast feeds, stored Video on Demand content, and Web support. This leads to a proliferation of standards which must be supported by the settop, and consumes considerable bandwidth.

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Last Mile: Video On Demand

The incremental step of implementing ZPEG storage but operating it in MPEG-2 playback mode supports existing customers transparantly; new customers may be enabled with inexpensive ZPEG settops instead of more expensive general-algorithm solutions.

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Last Mile : Everything On Demand

A ZPEG-only plant becomes a viable strategic long-term solution, delivering content for 10% the cost of conventional solutions. 

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Last modified: March 15, 2003