Types of Set-top BoxesSet-top boxes may be associated with these major categories:
(1) Broadcast TV Set-top Boxes - The more elementary level set-top box with no back channel (return channel.) These might however come with some memory, interface ports and some processing power.
(2) Enhanced TV Set-top Boxes - These have a back channel (return channel), often through a phone line, and are the mainstay of today's set-top boxes. These are capable of Video on Demand, e-commerce, Internet browsing, e-mail communications, chat and more. They are giving way to the next category.
(3) Advanced Set-top Boxes - A fully integrated set-top box. These have good processors, memory and optional large hard-drives. They're often used with high-speed connections. Advanced set-top boxes are more likely to be integrated with DVRs and high-definition TV oriented functionality. See Media Centers.
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