Cisco Headend System Release 2.7 Guia Do Desenho
Chapter 1 Introducing Switched Digital Video
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SDV Benefits
The SDV solution provides the following benefits to cable service providers:
Enhanced bandwidth management
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Provides an immediate bandwidth savings, compared with the linear
delivery of broadcast content
delivery of broadcast content
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Increases in effective bandwidth allow for expansion of HD, VOD, Voice over
Internet Protocol (VoIP), and high-speed data (HSD)
Internet Protocol (VoIP), and high-speed data (HSD)
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Allocated bandwidth demand is driven by viewership (not the number of
programs offered)
programs offered)
Specialized broadcast program tiers
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Create additional specialized content tiers for smaller demographic groups
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Potential source of new premium subscriptions
Distributed resource management
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Resources (QAM modulators and Ethernet switch/routers) supporting
multiple applications are managed by a single (master) resource manager,
thus enabling sharing of those resources by all the applications, including
digital service, VOD, SDV, and traditional broadcast, to name a few
multiple applications are managed by a single (master) resource manager,
thus enabling sharing of those resources by all the applications, including
digital service, VOD, SDV, and traditional broadcast, to name a few
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Channel changes for high-speed, real-time applications (such as SDV) are
managed by distributed application-specific servers
managed by distributed application-specific servers
Performance
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Channel change times are transparent to home consumers (SDV channel
change times are essentially equivalent to digital broadcast channel change
times)
change times are essentially equivalent to digital broadcast channel change
times)
Viewership statistics
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Track and report channel change information for optimal system
performance and bandwidth management, pre-setting highly viewed
programs
performance and bandwidth management, pre-setting highly viewed
programs
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Use information to optimize your programming options