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switched video

   Also found in: Wikipedia 0.03 sec.

Delivering video channels over cable selectively, similar to video on demand (VOD), Web page retrieval and other two-way, request-response systems. Switched video, also called "switched digital video" (SDV) and "switched digital broadcast" (SDB), provides greater channel capacity than the traditional method of transmitting all cable channels to the TV at the same time. It takes advantage of the fact that only a small percentage of channels are watched in a particular neighborhood at a given moment.

A New Infrastructure
Switched video requires set-top boxes with two-way communications and a switching infrastructure. When the viewer selects a different cable channel, the set-top box orders that channel from the distribution hub like a video on demand (VOD) program. The distribution hub transmits the channel to the local node, making it available for that neighborhood.

Switched and Non-Switched
When only selected programs are transmitted, the network can provide much greater TV channel capacity over its physical channels.



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BigBand's next-generation switched video technology is designed to enable new capabilities that are not possible on traditional television networks, giving operators the ability to support a virtually infinite amount of programming and personalize content for subscribers.
BigBand Networks' Switched Digital Video Solution Deployed by Cox ... by Business Wire
NASDAQ:BBND) plans to demonstrate a host of new switched video capabilities in a series of public and private demonstrations at the CableLabs([R]) Summer Conference this week.
BigBand Networks Demonstrates New Switched Digital Video Capabilities by Business Wire
Switched video pioneer to demonstrate proven, cost-effective solutions for Korean digital TV and HDTV expansion
BigBand Networks to Demonstrate Industry-Leading Switched Digital ... by Business Wire
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